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i w7 i f> -L >- ' d O I i I I I I I / 1967 ^3 T) j\ 21a ~Ko BUILT-UP ROOFING SPECIFICATIONS PLAINTIFF'S MANUAL II EXHIBIT BEA-5a For Architects, Engineers & Contractors SC-BE-05585 X0PPE3S Coal Tar buHi-up roofing Koppers coal tar built-up roofing provides one of the moat durable roofing membrane* known. The advantage* are found in the in herent superior characteristics of coal tar pitch, the only timeproven waterproofing material for low-slope roofs. Coal tar pitch has a natural resistance to water, and even air and water vapor penetration. A tight molecular structure enables coal tar pitch to permanently withstand water penetration and further prevents oxidation of the roof surface. Koppers watercooled roof specifications take advantage of the unique waterresistant characteristics of coal tar pitch to give you mainte nance-free roofing. Another unique feature of Koppers coal tar roofing is its permanent self-healing ability. Alligatoring and hairiins cracks common to most materials, even tually cause damage to the roof ing membranes. Coal tar pitch has a property known as "coldflow," which automatically cor rects these conditions before seri ous damage takes place. This "cold-flow" feature even heals small mechanical fractures at normal temperatures, stopping trouble before it starts. When you specify a Koppers coal tar roof, you are rewiring your building owner-client of long-term roof performance at no extra cost. And you'll be covering your building with nature's finest protective material. Slope of Deck Bond in Years Type of Surface No. of Piifts Spec. No. Paget No. | GENERAL REQUIREMENTS 3-F FLAT DECKS 1 Wood Plank, Plywood Up to 2* 20 Gravel or Slag Up to 2' 15 Gravel or Slag Up to 2' 10 Gravel or Slag 5 4 3 1 2 30 6 6; 61 Wood Fiber Up to 1' 20 Gravel or Slag Up to 1' 15 Gravel or Slag 4 3 27 28 7! 7! Pourad Concrata, Pourad Gypsum Precast Concrata Procast Gypsum, Pourad Gypsum, Gypsum Metal Bound Plank . Up to 2" 20 Gravel or Slag Up to 2" 15 Gravel or Slag Up to 2' 20 Gravel or Slag Up to 2' 15 Graval or Slag Up to 2' 20 Gravel or Slag Up to 2` 15 Graval or Slag 4 3 4 3 5 4 58 7 8I I 10 9 11 9 i 12 10 13 10 1 Mata! with Insulation , Up to 2" 20 Gravel or Slag Up to 2' 15 Graval or Slag 4 3 17 11 i 18 11 i 1 Promenadt Tile over i Poured Concrete Up to 1' 10 Promenade Tile 5 20 12 I Water Cooled over Poured Up to 1' 20 Gravel or Slag j Concrete, Poured Gypsum, Up to 1' 15 Gravel or Slag I or Precast Concrete Slab i STEEP DECKS ' Aggregate Surface Wood. Poured or Precast | Gypsum, Gypsum Metal I1 Bound Plank ' Poured and Precast Concrata, and Metal ! with Insulation 2'-3' 2'-3' 2'-3* 2'-3* 20 Gravel or Stag 15 Graval or Slag 20 Graval or Slag 15 Gravel or Slag 4 23 13 j 3 24 13 1 i j 1 1 5 4 300-A 2500-A 14 i 14 1 4 800-A 14 ! 3 3200-A 14 Mineral Surface Wood 3'-9' 3';9' 15 Mineral 10 Mineral 3 31-A 15 2 4-A 15 Poured Concrete or Poured Gypaum 3#-9' 3'-9' 15 Mineral 10 Mineral 3 33-A 15 2 9-A 15 I Precast Gypsum, Gypsum Metal Bound Plank Precast Concrata 3*-9* 3'-9* 15 Mineral 10 Mineral 3 34-A 15 2 35-A 15 Smooth Surface Wood, Poured or Precast Gypsum, Gypsum Steel Plank 2'-6' 2'-6* 2'-6' 20 Smooth coated 15 Smooth coated 10 Smooth coated 4 3 3 3-A 25-A 40-A Poured and Precast Concrata, and Metal with Insulation 2'-6' 2'-6* 2*-6' 20 Smooth coated 15 Smooth coated 10 Smooth coated 4 3 3 8-A 32-A 41-A See Koppers Supplemental Built-Up Roofing Specifications for bonding and details of Smooth Surfaced Sttap Roofing. m P I i ! FLASHING SPECIFICATIONS 16 INSULATION SPECIFICATIONS--with and without vapor barrier 20 Deck Con(traction Humidity CoMUdeits Spec. Ne. -----------1 Wood, Precaat Gypsum, Gypsum i Metal Bound Plank Normal High Humidity 200 21 1 201 21 J Pourad Concrata, Poured Gypsum and Precast Concrete Slabs Metal Normal High Humidity High Humidity 202 21 ' I203 21 204 22 ! RE-ROOFING 22 1 FLASHING DETAILS 23 -- For docks or insulations not catered in thoso spocifieations consult Koppart Supptomonttl Built-Up Roofing Spocifieations or your Koppers Roprosontatioo. "ml KOPPERS COMPANY, INC. 2 HOPPERS slag or grave] surfaced roofs 21a R5- A Koppen Slag or Gravel Surfaced Roof consists of layen of tarred nit cemented with pitch to form a continuous skin over the entire roof deck.The actual waterproofing agent is the pitch. The number of layers or "plies" of tarred felt required varies from 3 to 5 and depends on the type of deck and the length of service desired. The number of pine used does not affect the impermeability of the roofing, but a greater number does pro long its Ufa. Either slag or gravel provides a satisfactory surface. Advantages of Coal Tar Pitch for. Flat Roofs Two important questions should be asked about any roofing to be applied on fiat decks: 1. Can it resist prolonged contact with Watar without deteri orating? 2. Does it have the ability to heel itself automatically? Roofs built with Old Style Pitch and Approved Tarred Felt DO resist water and they DO haal thamaelvsa. Resistance to Water Today, due to developments in past years, construction methods and roof assembly assign have changed and unless a roof is designed to be watar cooled, drainage should be incorporated wherever possible. This will facilitate repairs when necessary, reduce the possibility of insulation becoming saturated and add a degree of protection for building contents. Prolonged contact with watar, caused by poor drainage, low spots or settlement of the building, is a condition almost impos sible to avoid on low sloped roofs. Service records of over 50 years of coal tar pitch roofs with little or no attention prove the resistance of tar to water. Old Style Pitch is practically insoluble in water, none of its constituents having more than a 'light water solubility. Koppers coal tar pitch roofing is water- oof. The Self-Healing Property Weathering and rapid changes in atmospheric conditions can cause cracks in the top surfaces of some types of roofing. How ever the vital consideration is whether these cracks are per manent if they do appear. Old Style Pitch has a property tech nically known as "cola flow" and even at ordinary temperatures cracks in the surface heal themselves. This can clearly be seen in photomicrographs which show the sides of the cracks moving slowly together until complete fusion takes place and the pitch again forma a continuous layer. Old Style Pitch Roofs readily conform to slight irregularities in the deck and yet remain waterproof. The Extra-Heavy Top Pouring Additional protection is given a Koppers Roof by the extra top covering of roofing pitch which is poured on (not mopped). NOTE: This roofing specification manual contains the latest and best available information as derived from Koppers long expe rience in the roofing industry. The design criteria and details contained herein have been compiled and are offered as a guide for consideration to assist the architect, owner and roofer m an attempt to provide the bast roof possible for long, trouble-free service. Responsibility, however, for design of any roofing system, remains with the architect or engineer and building owner. The contents of this manual are subject to change at the discretion of Koppers Company as future developments and experience are achieved. NOTE: The "Approximate Material Quantities" charts which are listed for each of the specifications in this manual are strictly for the use of the roofing contractor in estimating. The number of plies specified are required. The total pitch quantities are baaed on approximately 25 lbs. per layer with a top pouring of approximately 75 lbs. GENERAL REQUIREMENTS This manual contains roofing specifications and procedures which are baaed on the many years of Koppers experience and generally accepted good roofing practice. They are intended to provide the architect, engineer, general contractor and roofer with the proper information to plan and construct the best built-up roof with the most time-proven materials available today. The intent of these specifications is to provide a watertight roof. The quantities of materials shown are for estimating pur poses only. The specified number of plies of felt must be used. The methods of construction outlined in 'thirst specifications must be followed for bonded roofs uni-- modifications are al lowed by Koppers Company, Inc. The applicable following requirements are part of the de tailed specifications containsd in the succeeding puss. For addi tional information, sea Koppen Supplemental Specification*. HOPPERS ROOFING BONDS Bonds on Koppers Roofing and Fleshings are issued by Koppers Company, Inc., and its surety on roofs constructed according to Koppers specifications and when applied by roofing contractors approved m writing by Koppers Company, Inc. The Koppers bond guarantees that, m accordance with the terms of the bond, Koppers will make repairs to the roof which are necessitated by ordinary wear and tear by the elements to ksep that roof in watertight condition. Standard Koppers bonds are available for 10-, 15-,or 20-year terms at described in each individual specification in this manual. A twenty-five (25) year bond la available for all stand ard twenty (20) year specifications when it is specified. Further tails are available in Koppers current bulletin. Koppers will issue its standard roofing bond for fiat roofing nd will bond auch steep roofing as required in conjunction with the flat roofing, provided the steep roofing does not exceed 50% of the roofing to be bonded, and provided all roofing is con structed in conformance with Koppers specifications. The Koppers bond is not available on roofs over private resi dences. It does not cover the installation or replacement of any decking, vapor barrier materials, insulation or metal work nor is it an effective instrument when abuse has caused damage to the roofing. The Koppers bond assures that standard proven specifica tions will be followed, quality materials will be used, a Koppers approved roofer will apply the roof and provides for inspection service. NOTE: (1) Koppers Company, Inc., will issue Roofing Bonds in such portions of the United States as are covered by its inspection service. (2) Flashing can be bonded for periods up to but not exceeding the term for which the roofing is bonded. DECKS All decks shall be installed in accordance with the deck manu facturer's specifications. They shall be properly graded to drain outlets and shall be clean, smooth, completely dry, rigid, and free of debris. Any deck defect shall be corrected before appli cation of roofing. In approving any deck as satisfactory to receive a Koppers roof, only the deck surface is accepted. It is the responsibility of the building designer and deck manufacturer to provide for expansion and contraction, for support of TMtimiim anticipated loads, and the selection of the deck Tntril and construction details as related to their ability to contain bitumens. Koppers will not assume responsibility for bitumen seepage. The placing of conduits, bolt heads, etc., above the roof deck and below the roofing membrane is not recommended. Decks of questionable drynsss should be Checked prior to roofing application. A pint ofthe bitumen which will be applied to the deck surface as the adhesive layer (coal tar pitch or steep asphalt) should be heated to application temperature and poured on a representative area of the deck. If the material foams or bubbles, the deck is not considered to be satisfactory 3 for roofing. After it haa cooled to ambient temperature, the coating should be taeted for adheeion. If any portion of it can be eaauy (tripped clean of the deck, application ahould not be permitted. Care should be exercised when roofing over lightweight in sulating fills since trapped moisture can cause blisters. Koppers will not accept insulating fills applied over poured concrete substrates, unvented metal decks, vapor barriers or any type of structural base which will not permit tha fill to vent or dry from the underside. Low sloped tapered edge cants are recommended in conjunc tion with gravel stops at roof perimeters. Low sloped cants are more desirable than excessive sloped cants which cannot be surfaced with gravel and sometimes present problems of felt ^Sf&iection. or openinfs in the deck shall have been com pleted prior to the application of roofing. ri:,1rC3ASY SCOPING A temporary roof should be applied to the deck prior to laying of any insulation or roofing until ail danger of damage has been eliminated. Temporary roofing, applied for obvious reasons, should be removed after it haa served its purpose and the permanent roof installed. Consult your Koppers representative for recommended speci fications over various type decks for temporary roof construc tion. Reference: Technical Bulletin, "Temporary Roof Coverings For Low Slope Roofs", - AIA File No. 12-B, prepared by AJR.I.B.--B.U.R.C. Koppers Old Style Pitch is manufactured to meet the following standard specifications: Federal Specification R. P. 381 Type I ASTM D-450 Type A. Underwriters' Laboratories, Inc. Old Style Pitch is available in metal containers, 460 to 500 Ihe., and in bulk. The softening point of Koppers Old Style Pitch is 140F155F by the Cube-in-Water method of test. Pitch shall not be heated above 400F and should not be maintained under heat for sustained periods. 7'-:i AGG.-E5A72 SURFACE Into the extra-heavy top pouring of pitch, slag or gravel shall be embedded. The slag or gravel acts aa an armor coat to pro tect the membrane against hail, driving rain, sleet, snow, etc. Slag or gravel also provides weight against the lifting action of wind currents. Specified quantities must be adhered to and must be applied while the pitch is hot to insure embedment. The top pouring of pitch with slag or gravel must be applied as soon aa possible after the application of felts. If a daisy is anticipated, particularly in 'wintar weather, a glass coating of pitch is to be applied to protect the felta until tha pouring of pitch and slag or gravel is applied. Ideally, all work should be slagged or gravelled in and all necessary flaahing installed as work progresses. Koppers Company, Inc., will approve the use ofslag or gravel meeting A.S.T.M. Specification D1863-64 which lists the fol lowing sieve size requirements: Slave Size Tots) Passing, Percent H`.......................................................... 100 M*............................................................. 90-100 H* ..........................................................40-70 No. 4...................................................... 0-15 No. 8...................................................... 0-5 In addition to sieve analysis requirements, A.S.T.M. D186364 stipulates tha following physical requiramenfes: Moisture, maximum, percent Crushed atone and graval...................................... 0.5 Crushed roofing slag.............................................. 5.0 Unit weight (loose), minimum, lb. per cu. ft. . . 60 Oust, maximum, per cent.......................................... 0.5 Hardness, maximum percentage pawing a No. 6 (3.36 mm) sieve.................................................. 20 A.S.T.M. Specification D1863-64 covers aggregates specified both for use in road construction and built-up roofing and should be commercially available throughout the country. i 7/COD NAILING STR1FS All non-naiiable decks require wood nailing strips at eaves, edges, walla, roof openings, etc., for proper securing of metaU. flanges and for decks which will have insulation installed. ) Nailers must be securely and firmly attached to the deck c through it to its supporting members. Nailers should be treated to preserve their condition and hence their nail retentive power for the expected life of the roofing. Creoeote or oil born preservatives are not recommended since they may have an adverse affect on tha roofing they con tact in some instances. Nailers should be pressure treated with a water born pre servative such as Wolman Salta or. with penta applied in a liquified petroleum gaa carrier such aa the Cellon Process. Roofing felta for all decks having a slope of one (1) inch per foot or more must be back-nailed and therefore, non-nailable decks must be furnished with wood nailers. CAULKING AND TAPING Whether joints of various precast deck materials are grouted or not, consideration should be given by the architect to caulk ing and taping of all joints. Tbs application of dashing cement and a fait atrip approximately 6" wide will minimize tha dele terious affects on the roofing membrane of movement, moisture transmission through an opan joint, joints which are not level and possible bitumen seepage. Refer to page 7 for details of caulking and stripping. APPLICATION Of FELTS All roofing is to be built up in place with alternate moppings and layers of felt over tha proper preliminary work as specified in this book under the several subheads for various types of deck construction and slope. Application is to be made by ex perienced workmen only and m the manner hereinafter de scribed. Tha finished roof is to consist of the number of plies and moppings plus top pouting with aggregate ae specified. Where practical roofing felta should always be applied so that tha direction of the flow of water is over and not against laps. Broom or prase all plies of felt into the hot pitch and lay without wrinkles, buckles or kinks, so that tha finished roof it free froi-->, pockets or blisters. Each solid mopping shall completely cov*Wej the area to which it is applied. Overlap ends of all connecting plies of felt not leas than 10 inches. End-stripping or taping of thaaa laps is not permitted. The widths of felt are laid shingle faahion, not only because this method produces a stronger membrane but because it also makes it possible to construct a roof of any desired number of plies in a single progressive operation. This is accomplished by varying the widths of the edge laps. Three-ply roofing for ex ample, is achieved by lapping each ply approximately twothirds over the preceding ply; for 4 plies, a lap of approximately three-fourths the width is required. For treatment of felts at eaves, vertical surfaces, cants and other projections, refer to Flashing Specifications and Detaila in this manual. When beginning a membrane roofing installation, appropri ate width starting stripe offelt shall be used at the starting point to achieve the specification ply build up at that point, ao that successive plies laid shingle faahion will produce the ply require ments. In ail cases tha plies of felt must be laid shingle faahion. Ap plication of felts in a method where two plies are laid over two plies, three plies over one ply, or any combination other than all plies in shingle fashion will not be permitted at any time except as may be specifically provided for in our printed speci fications. It is advised that applications of falta on slopaa from one half 04) inch to one (l) inch per foot be run with tha slope, up and ovar tha ridge of the roof (parallel to slope line) and each sheet back nailed along tha end laps at the high point end of each roll. Roofing ahould start at the low point of tha roof to assure that the flow of water will be over rather than against tha end laps. Roofing each slope in this faahion will provide added protection to the ridge as a result of the overlapped membrane in this critical area. Koppers requires that all felta be backnailed when the slope of tha deck is one (1) inch per foot or more. *'ATE?! A'-S ~'?CTECT`TM " Roll roofing materials and insulation ahould be stored indoors if poesible, otherwise it shall be protected by raised platforms and covered with suitable weatherproof protective coverings such as tarpaulins, plastic sheeting, etc. 1 T 1 KOPPERS NO. 15 TARRED FELT Koppers Tarred Felts are sold in standard size roll*. 36 inches --wide and containing 432 square feet, except when otherwise T /'>ecified. Koppers Approved Tarred Felt, the highest grade of 1 , jofing and waterproofing felt and the grade used in Koppers Bonded Roofs, has a minimum weight of 13 lbs. per 100 square feet or an approximate minimum weight of 56 Ihs. per roll. I Koppers Approved Tarred Felt is manufactured to meet the following specifications: Federal Specification HH-R595 Type l. Class 1 A.S.T.M. D-227 1 Underwriters' Laboratories. Inc. KOPPERS STEEP ROOFS I Koppers slag or gravel surfaced steep roofs for slopes from two 2 inches to three 3i inches per foot are constructed of as phalt saturated felts set in steep asphalt. A top coating of steep asphalt, into which either slag or gravelyis embedded, completes this type construction. " 1 Koppers mineral surfaced steep roofs for slopes from three i3> inches to nine 9i inches per foot are constructed of Koppers Asphalt Felts set in Koppers Steep Asphalt. The surface ma terial is composed of Koppers Selvage Edge Mineral Surface I roofing, a heavy asphalt saturated felt thirty-six (361 inches in width, of which nineteen il9> inches are bare and seventeen 17 inches of the top surface is covered with granules. This is embedded in Koppers steep asphalt with each sheet lapping the I preceding sheet nineteen '19) inches, thereby presenting to the elements a continuous tough granule surface. Koppers smooth surfaced steep roofs for slopes from two i2) inches to six -6i inches per foot are constructed of perforated I asbestos felts thoroughlv impregnated with specially refined asphalt firmly embedded in Koppers Steep Asphalt. Koppers Perforated Asphalt Saturated Asbestos Felts produce a longlasting weather-resistant roof. I NOTE: For detailed specifications regarding smooth surfaced steep asbestos roofs refer to Koppers Supplemental Built-Up ~Roofing Manual. I ROOFING AND FLASHING BRIEF SPECIFICATION Roofing and flashing shall be installed by a rooting contractor I approved by Koppers Company. Inc., and he shall apply the roofing and flashing in strict accordance with Koppers Speci fications and requirements for 10. 15 or 20 year bonds, and subject to Koppers inspection and approval. Upon completion I of the work, the contractor is to furnish Koppers Roofing and Flashing Rond to the owner. I UNDERWRITERS' LABORATORIES' INC. Rooting constructed according to Koppers specifications in most instances carries a Class A rating by Underwriters' Lab oratories, Inc. I COLD STORAGE & FREEZER BUILDINGS Koppers Company will not bond its roofing over these struc Ti tures if insulation and or vapor barrier is installed over the deck and unless there is an adequately ventilated air space m. between the insulated refrigerated area and the underside of the roof deck. See Koppers Supplemental Specifications for further infor I mation. WALKWAYS I Where periodic foot traffic patterns such as paths to or around equipment and other similar situations where the roofing may be subjected to anticipated unusual treatment, the roofing membrane should be protected. Walkway systems should never I he placed directly on a slag or gravel surface. Areas of the lortng membrane which are to act as the bearing surface for walkway should be given additional protection. Although there are a number of methods which can be employed. Koppers recommends one of the following: I 1. Treated Wooden Walkways. Over the designated walkway areas and directly on the existing coal tar pitch and tarred felt r membrane < prior to aggregate surfacing i. lay two additional plies of tarred felt in solid moppinga of pitch. Treated wooden sleepers should then be set on the reinforced area in a solid pouring of coal tar pitch followed by aggregate surfacing embedded in the pouring over the entire surface up to all sides and ends of sleepers. Treated wood planking bridg ing the sleepers will provide the walkway surface. ' Refer to "Wood Nailing Stripe." top of page 3, paragraph 3, for wood treatment information. 2. Traffic Pads. Over the areas of the roofing membrane to be protected prior to the top pouring and aggregate surfacing, lay in a solid application of coal tar pitch approved protective pads. Pads should be approximately 72' x 36' x lz" minimum thickness of a homogeneous core of bitumen, plasticizers and inert fillers bonded under heat and pressure between two sat urated and coated sheets with the bottom side plain and the top wearing surface of well-bonded ceramic granules. Following this operation the top pouring of coal tar pitch and aggregate surfacing of the roof should be completed up to all edges of the installed pads. Refer to page 26 of this manual. If other methods are considered, consult your local Koppers representative concerning the protection of the roof system which is proposed. NAILS & FASTENERS All fastening devices must provide adequate retention in the deck structure. Nails must be driven through flat tin discs or be of an approved type fastener with an integral cap. Nail lengths and type of nails or fasteners depend on the deck ma terial used and the thickness of same. .For insulation applica tions where nailing is required, nails must be of sufficient length to penetrate the insulation and provide the retention necessary.i The following recommendations will serve as a guide for the installation of roofing for the decks as listed: Metal Decks. For securing felts to insulation use soft nosed roofing nails '4 inch longer than the thickness of the insulation, designed to clinch or hook on the underside of the insulation such as manufactured by Independent Nail Corporation or Simplex Tube-Lok nail or approved equal. Insulation must have suffi cient nail retentive ability to meet general requirements for nailable decks. Poured Gypsum and Pourad Lightweight Aggregate Decks (When Not Thoroughly Dry). Use Simplex Gypsum Roof Deck Nail or Screw-Tite Souarehed Cap Nail or Capped E S Nail or square cut unfinished nails through flat tin discs. Precast Nailable Lightweight Oecks (Gypsum Plank and Dry Poured Gypsum). UseSimplex Tube-Lok Nail or square cut steel nail with head (Wheeling La Belle or equal'. Preformed Composition Decks. Use Stronghold Annular Threaded Squarehed Cap Nail or Simplex Tube-Lok Nail or Capped E S nail or approved equal. Deck density is particu larly critical and must have required retentive ability. Wood Decks. Use Simplex flat head roofing nail or Stronghold Annular Threaded Squarehed Cap Nail or barbed roofing nails through flat tin discs. Plywood Decks. Use annular ring shanked nails through flat tin discs or Simplex Annular Threaded nails or equal. 1 Refer to Douglas Fir Plywood Association Laboratory Bulletin 61-B dated March 20. 1961.) Structural Wood Fiber Decks. For nailing applications use Simplex Tube-Lok Nail. Refer to page 7 of this manual. NOTE: Nailing frequency is recommended in the individual application specifications which follow in this manual. Should the manner of attachment as recommended above conflict with the specifications of the nail, insulation or deck manufacturer, these manufacturers' specifications should be followed. Roofing over nailable decking where the underside of the deck is exposed shall be nailed on centers at one-half the spac ing specified to provide additional protection against wind up lift. * ' For reference: E S Products. Inc.. New Rochelle, N. Y. Independent Nail Corp.. Bridgewater,.Mass. Simplex Nail & Manufacturing Corp.. Americua, Ga. Wheeling Steel Corp., Wheeling, W. Va. 5 deck construction , WOOD PLANX / PLYWOOD SLOPE Up to 2 in. per ft. SURFACE Aggregate Spec. No. 1-5 ply-20 year Spec. No. 2-4 ply- 15 year Spec. No. 30-3 ply-10 year Accroximate ".latendi C-.n;.' -ii .csnvtjctor es:n MATERIALS per 100 Sq. Ft Sheathing Paper Tarred Felt Coal Tar Pitch Grave) OR Slag Spec. No. 1 5 lbs. 75 Ibs. 150 lbs. 400 Ibs OR 300 Ibs. Spec. No. 2 5 Ibs. 60 Ibs. 125 Ibs. 400 Ibs. OR 300 Ibs. Spec. No. 30 5 Ibs. 60 Ibs. 125 ibs. 400 Ibs. OR 300 Ibs. Hot bitumen should saver be applied directly to a wood deck. Sandwiched between the heat tram above and the heat from below, each material finds its way through the boards into the building. Good practice demand* the csahioaing and blotting effect of a layer of sheathing paper followed by layers of dry felt. Shiplap and square edge boards should be avoided where possible. If the underside of the roof deck is exposed to air pressure created from open doors or windows, tongue-sndgrooved lumber should be used. SPECIFICATIONS Select clauses as required. Optional clauses in italic. Condition of Surface to Receive Roofing Do not apply roofing to any surface which is not reasonably smooth and free from projections or holes which might cause rupture of roofing membrane. Lumber shall be seasoned and dry and preferably treated. Immediately before the applica tion of the roofing, thoroughly clean the surface. Roof deck shall be properly graded to outlets. NOTE: Refer to Koppers Supplemental Specifications for addi tional information for plywood deck construction. Application of Roofing MstartsIt 1st Lay one ply of rosin sized or other approved sheathing paper weighing not leas than five (5) lbs- per 100 square feet lapping each sheet two (2) inches and nail sufficiently to hold in place. 2nd. Spec. No. 1 Spec. No. 2 Apply over the entire surface of the sheathing paper, two (2) dry plies of Koppers Approved Tarred Felt. Lap plies nineteen (19) inches. Nail on twelve inch centers. 2" in from edge lap with nails thru fiat tin discs or approved nails with integral caps. Nail shanks are to be of required length for maximum withholding power. 2nd. Spec. No. 30 Apply over the sheathing paper, one (1) dry ply of Kopp No. 30 Tarred Felt. Lap ply four (4) inches. Nail on twelve (12) inch centers, 2" in from edge lap with nails thru flat tin discs or approved nails with integral caps. Nail shanks are to be of required length for maximum withholding power. 3rd. Mop with Old Style Pitch the entire surface, preceding the application of additional plies of felt and apply over the entire surface as follows. 4th. Spec. No. 1 Apply three (3) plies of Koppers Approved Tarred Felt. lap ping plies twenty-four and two-thirds (24-2/3) inches. 4th. Spec. No. 2 Spec. No. 30 Apply two (2) plies of Koppers Approved Tarred Felt, lapping plies nineteen (19) inches. Mop solidly between plies with Old Style Pitch so that in no place shall felt touch felt. On slopes one (1) inch per foot or more nail each sheet of felt with Simplex flat head or one (1) inch barbed roofing nails through fiat tin discs, two (2) inches from the back edge on twenty-four inch centers. 5th. Pour over the entire surface of the roofing membrane a uni form coating of approximately seventy-five (75) pounds of Old Style Pitch into which, while hot. embed not less than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet. Insulation end Vapor Barrier 1. Insulation without vapor barrier--See Specification No. 200 on page 21. 2. Insulation with vapor barrier--See Specification No. 201 on page 21. General Requirements on pages 3 through 5 and Detailed Specifications on pages 20 through 24 are a part of these spec ifications sad must bs sdhsred to where applicable. 6 deck construction WOOD FIBER ''''LOPE Up to 1 in. per ft. oURFACE Aggregate Spec. No. 27-4 ply-20 year Spec. No. 28-3 ply--15 year Spec. No. 28-may be bonded for 10 years A.scrO'*,rrafe * -JS ,for contractor estimating sursoses . > MATERIALS per 100 sq. ft Koppers Steep Asphalt Coal Tar Pitch Base Sheet Tarred Felt Spec. No. 27 20 lbs. ISO lbs. 43 lbs. 45 lbs. Spec. No. 28 20 lbs. 125 lbs. 43 lbs. 30 lbs. All decking moat be initailed in strict kceordance with the particular deck mannfaeturer's recommendations for installa tion. Deck material must be protected during shipment. Job site storage and prior to roofing application. No planks which hare ' ecome structurally weakened due to moisture, fractures or mtilated edges may be used. All joints must be level and preferably grouted full and level with plank surfaces as recom mended by the deck manufacturer. All planks must be well anchored to supporting members to resist movement in a fash ion recommended by the deck manufacturer. Any planks which bow or deflect or do not seat securely must be replaced. Re sponsibility for the selection of a particular type of wood fiber deck, its installation, provision for expansion and contraction, its suitability to Job requirements, and its ability to support anticipated loads in its environment rests with the designer and deck manufacturer. SPECIFICATIONS Select clauses at required. Optional claustt in italic. Condition of Surface to Rsceive Roofing Do not apply roofing to any deck which is not reasonably level or free from excessive voids or projections or where deck sur face fibers are loose, spongy or separating. Deck must be clean of debris, cuttings, dirt ana other foreign matter. ' Do not apply roofing over deck planks where side or end joints are not butted level or where planks are not seated properly or where joints are excessively gapped. It is recommended, whether joints are well grouted or not, that they be caulked and stripped. A sufficient quantity of trowel grade asphaltic plastic cement should be used to con tinuously seal all joints followed by a strip of No. 15 asphalt saturated felt approximately six (6) inches wide centered over the joints and adhered to the plastic cement. Perimeter wood nailers must be installed and all adjacent decking must fit close and level. Wood nailers are necessary at all locations where anchoring of metal flanges etc., are required. Application of Roofing Materials it. Install one ply of Kopperm coated basesheet with minimum V_^our 4. inch side and six (6) inch end laps in a solid mopping of minimum 190 :F softening point steep roofing asphalt. All side and end laps shall be continuously sealed the full width of the lap. ALTERNATE: As an alternate to mopping, lay one (l) ply of rosin-sized sheathing paper lapped two 12) inches minimum and nail to hold in place. Then lay one U) ply of Koppert coated base sheet lapped not lets than four (4) inches and nail along center of lap not lest than nine (9) inches on center and thru the center of each sheet on eighteen (18) inch centers with mechanical clinching type fasteners as recommended by the Structural Wood Fiber Products Association or designer such as Simplex Tube-Lok nails. For bonded roofing applications, fasteners, other than TubeLok nails, mutt be acceptable to Koppert. Fasteners shall be applied at the minimum rate of one (1) per square foot as rec ommended by the Structural Wood Fiber Products Association.. 2nd. Solidly mop the entire surface with Old Style Pitch. 3rd. Spac.No.27 Apply three (3) plies of Koppert Approved Tarred Felt, lap ping plies twenty-four and two-thirds (24-2/3) inches. 3rd. Spec. No. 28 Apply two (2) plies of Koppert Approved Tarred Felt, lapping plies nineteen (19) inches. Mop solidly between plies with Old Style Pitch so that in no place shall felt touch felt 4th. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch into which, while hot. embed not less than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet Insulation and Vapor Barrier 1. Insulation without vapor barrier. Install insulation in steep asphalt in amformance with 1st paragraph. Nailable insulation not exceeding one (1) inch thick may be installed using 1H inch Simplex Tube-Lok nails at all four comers and at center of board. Installation of roofing over insulation shall be as per specification outlined above with base sheet mopped solidly to the insulation in steep asphalt. 2. Insulation with vapor barrier. Install two (2) plies of No. 15 asphalt felt lapped nineteen (19) inches in steep asphalt as per 1st paragraph of this specification. Both* plies shall be mopped solidly so that in no placa shall felt touch felt Install insulation in solid mopping of steep asphalt. Roofing over insu lation is to be in accordance with the details of the specifica tion above with base sheet mopped solidly-to the insulation. General Requirementa on pages 3 through 5 and Detailed Specifications on pages 20 through 26 are a part of these speci fications and must be adhered to where applicable. deck construction POURED CONCRETE POURED GYP3U?/] (thoroughly dry) SLOPE Up to 2 in. per ft. SURFACE Aggregate Spec. No. 5-4 ply--20 year Spec. No. 7-3 piy--15 year Aoproximate Material Qjar.t.t.es ;for contractor estimating cursoses cr' MATERIALS per 100 Sq. Ft Coal Tar PitchPoured Concrete Poured Gypsum Tarred Felt Gravel or Slag Spec. No. 5 175 lbs. 165 lbs. 60 lbs. 400 lbs. 300 lbs. Spec. No. 7 150 lbs. 140 lbs. 45 lbs. 400 lbs. 300 lbs. Poured concrete decks sometimes cause trouble because the built-up roofing is laid before the deck is thoroughly dry-- such as might nappes when the general contractor is anxious to get the building under cover and so urges the roofing con tractor to begin work shortly after the deck has been poured. When this happens the result is a blistered and buckled mem brane or, just as serious, insulation curls and makes an unsatis factory job. The roofing contractor, backed by the architect, should insist on a thoroughly dry deck before beginning work. He should also see to it that the deck is free of loose sand, frozen scale and other foreign matter. Projections should be removed, low points filled with cement grout or other suitable material, and all cracks pointed up. A poured gypsum deck, especially, should be inspected for moisture content, the characteristic of this material being such that even after pouring it quickly takes on a dry appear ance. The dryness, however, actually extends only a little distance below the surface, the large mass of the gypsum being very moist. Refer to General Requirements on page 3, paragraph 5 under Decks. SPECIFICATIONS Select clauses at required. Optional clauses in italic. Condition of Surfsea to Receive Roofing Do not apply built-up roofing to any surface which is not reas onably smooth and free from projections or holes which might cause rupture of roofing membrane. Surfaces must be dry. Immediately before the appliestioftof the roofing, thoroughly clean the surface of dust and loose materials. Roof deck shall be properly graded to outlets. Decks with inclines of one (X) inch per foot or more shall permit nailing, or treated wooden nailing strips must be in stalled prior to roofing. Nailing strips should be placed not more than three (3) feet apart on center and be run parallel with the slope of the roof and not across it Application of Roofing Materials 1st (A) Over Poured Concrete: Mop deck completely with Old Style Pitch. (B) Over Poured Gypsum: If poured gypsum is thorough:., dry, strip-mop the deck with approximate^ 12-inch wide moppings of Old Style Pitch spaced approximately six (6) inches apart If poured gypsum deck is not thoroughly dry. roofing shall be applied according to Specification No. 12 for 20 years or Specification No. 13 for 15 years as listed on page 10 of this manual. Applicable portions of Koppers Supplemental Speci fication "Food Establishments ' apply. 2nd. Spec. No. 5 Apply over the entire surface, four (4) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-seven and one-half <'27l/t) inches. Mop solidly between each 27V? inch lap with Old Style Pitch so that in no place shall felt touch felt. 2nd. Spec. No. 7 Apply over the entire surface three (3) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-four and two-thirds (24-2/3) inches. Mop solidly between each 24-2/3 inch lap with Old Style Pitch so that in no place shall felt touch felt. Where slope of deck is one (1) inch per foot or more and deck permits nailing, nail along back or upper edge of each sheet on twenty-four (24) inch centers. Where deck does not permit nailing, nailing strips are required and each sheet nailed along back or upper edge at spacings to assure penetration of nailers. 3rd. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, into which, while hot, embed not less than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet. Insulation and Vapor Barrier 1. Insulation without vapor barrier--See, Specification No. r. on page 21. ^ 2. Insulation with vapor barrier--See Specification No. 201 for poured gypsum or No. 203 for poured concrete on page 21. General Requirements on pages 3 through 5 and Detailed Spec ifications on paces 2# through 24 are a part of this specification and must be adhered ta where applicable. X deck construction I nicASi 21a Re- w SLOPE* Upto2in.perft. i SURFACE* Aggregate I I Spec. No. 10-4 piy-20 year Spec. No. 11-3 ply-*15 year v A. I \ A. I 4* Precut concrete slab deck* thoold receive the same careful ) scrutiny recommended for poured concrete or gypsum decks, although as a rale the pouibility of moisture being present due to insufficient drying time is not likely to be encountered. However, the contractor will often find one or more slabs rest I ing unevenly which results in edges projecting above the sur face. This may have been due to poor workmanship in laying the slab and should be corrected by resetting or leveling off. Where it is necessary to fill low areu, the use of cinder aggre I gate is not permitted since this material traps air and mois ture, causing it to expand and crack when covered. The result is a badly blistered built-up roofing surface. All Joints, whether grouted or not, should be caulked with trowel-grade uphaltie r plutic cement. Sides and ends of slabs should be square. Slabs * must rest firmly and evenly on supporting members. 4- * -- -^ \ \-- f . _ . . . Un 1 w i iO I A_ Select clautet as required. Optional clauses in italic. V Condition of Surface to Receive Roofing i Do not apply built-up roofing to any surface which is not reas 4- onably smooth and free from projections or holes which might cause rupture of the membrane. Surfaces must be dry. Immed iately before the application of the roofing, thoroughly clean the surface of dust and loose material. All joints between precast concrete slabs whether grouted or not shall be caulked with plastic cement which shall be applied r so that the top surface is level with the deck. (Felt strips four (4) to six (6) inches wide may be set in the trowelling of cement i for additional protection when so specified by the architect. Felt stripping in flashing cement assists in leveling uneven joints and bridges the joint opening providing a better base for . the roofing materials.) Decks with inelin-- of one (1) inch per foot or more shall lermit nailing, or treated nailing strips must be set in the deck Hush with the surface. Where insulation is specified, nailing strips may be secured to the deck surface and shall be level with the surface of the insulation. These strips should be spaced not more than three (3) feet apart and placed up and down and not across the slope of the roof. Roof deck shall be prop erly graded to outlets. MATERIALS par 100 Sq. Ft Coal Tar Pitch Tarred Fett Gravel OR Slag r: Spec. No. 10 165 lbs. 60 lbs. 400 lbs. OR 300 lbs. Spec. No. 11 140 lbs. 45 lbs. 400 lbs. OR 300 lbs. Application of Roofing Materiala 1st Each slab shall be spot or strip mopped with Old Style Pitch, keeping pitch moppings back at least four (4) inches from all edges of each slab joint. 2nd. Spec. No. 10 Apply over the entire turface four (4) pliet of Koppert Ap proved Tarred Felt, lapping pliet twenty-teven and one-half (27Vr) inchet. Mop tolidly between each 27'A inch lap with Old Style Pitch to that in no place thall felt touch felt. 2nd. Spec. No. 11 Apply over the entire turface three (3) pliet of Koppert Ap proved Tarred Felt, lapping pliet twenty-four and two-thirdt (24-2/3) inchet. Mop tolidly between the 24-2/3-inch lap with Old Style Pitch to that in no place thall felt touch felt. Where slope of deck is one (1) inch per foot or more and deck permits nailing, nail along back or upper edge of each sheet on twenty-four (24) inch centers. Where deck does not permit nailing, nailing strips shall be installed and each sheet nailed along back or upper edge at spacings to assure penetration of nailers. 3rd. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, into which, while hot. embed not less thew four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet Insulation and Vapor Banier 1. Insulation without vapor barrier--See Specification No. 202 on page 21. 2. Insulation with vapor barrier--See Specification No. 203 on page 21. General Requirements oa pages 3 through 5 and Detailed Spec ifications on pages 20 through 26 are a part of this specifica tion and must be adhered to where applicable. 9 deck construction: PRECAST GYP5U?/] POURED GYPSU?y] (not thoroughly dry) SLOPE Up to 2 in. per ft. SURFACE Aggregate________________________________________________________ Spec. No. 12-5 ply--20 year Spec. No. 13--4 ply--15 year Aoc'O'ir-.ats `.Satenai O-iani:n*es `.Z! :c."t'3c:or as;[i.7alit* zuezz ses r MATERIALS per 100 Sq. Ft Coal Tar Pitch Tarred Fett Gravel OR Slag Spec. No. 12 ISO lbs. 75 lbs. 400 lbs. OR 300 lbs. Spec. No. 13 125 lbs. 0 lbs. 400 lbs. OR 300 lbs. The tame recommendations spplyiag to precast concrete slabs apply to precast gypsum slabs and gypsum metal bound planks. All uneven slabs should be reset or leveled off so that the roof will be laid on a flat and even surface, free from projections and low areas. Because these slabs are precast, the possibility of a high moisture content being present is more remote than in the poured gypsum deck. SPECIFICATIONS Select clautet at required. Optional clauses in italic. Condition of Surface to Rscefvo Roofing Do not apply built-up roofing to any surface which is not reasonably smooth and free from projections or holes which might cause rupture of the membrane. Surfaces must be dry. Immediately before the application of As roofing, thoroughly clean the surface of dust and loose material. All joints between precast gypsum slabs shall be properly grouted: grouting not required on gypsum metal bound plank. Roof deck shall be properly graded to outlets. Application of Roofing Materials 1st Apply over the entire surface two (2) dry plies of Koppers Approved Tarred Felt Lap plies nineteen (19) inches. Nail at lap on twelve (12) inch centers. If poured gypsum deck is thoroughly dry, roofing may be applied according to Specifica tion No. 5 for 20 years or Specification No. 7 for 15 years as listed on page 8 of this manual- Applicable portions of Koppers supplemental specification "Food Establishments" apply. Alternate: Apply over entire turface one (1) ply of Koppert coated bate sheet, lapping each theet four (4) inchet over preceding theet and nailing at lap no lett than nine (9) inchet, and down center of each theet on eighteen (18) inch centert. 3rd. Spec. No. 12 Apply three (3) piiet of Koppert Approved Tarred Felt, lap ping pliet twenty-four and two-thirds (24-2/3) inchet. Where tlope of deck it one (1) inch per foot or more, nail each theet of felt tix (6) inchet from the back edge on twenty-four (24) inch centert. All lapt thall be mopped with pitch the full twenty-four and two-thirdt (24-2/3) inchet, to that in no place thall felt touch felt. 3rd. Spec. No. 13 Apply two (2) pliet of Koppert Approved Tarred Felt, lapping pliet nineteen (19) inchet. Where tlope of deck it one (1) inch per foot or more, nail each theet six (6) inchet from the bach edge on twenty-four (24) inch centert. All lapt thall be mopped with pitch the full nineteen (19) inchet to that in no place shall felt touch felt. 4th. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, into which, while hot embed not less than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet Insulation and Vapor Barrier rncm 1. Insulation without vapor barrier--See Specification No. 200 on page 21. 2. insulation with vapor barrier--See Specification No. 201 on page 21. Poured 1. Insulation without vapor barrier--See Specification No. 20? on page 21. '' 2. Insulation with vapor barrier--See Specification No. 201 oi page 21. General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 20 through 26 sre a part of this specification and must be adhered to where applicable. - deck construction: - ?/3ETAL DECX-S (Insulation Required) 21a TST *" /'""'LOPE Up to 2 in. per ft. x SURFACE Aggregate Spec. No. 17-4 ply-20 year Spec. No. 18-3 ply-15 year 1. Xw t AoDroximate Material Quantities ifor contractor estimating owe OSes only) 1 MATERIALS . per 100 Sq. Ft Spec. No. 17 Spec. No. 18 9- Steep Asphalt *12-15 Ibs. 12-15 Ibs. Tarred Fett 60 lbs. 45 Ibs. Coal Ter Pitch 175 Ibs. 14,5 Ibs. (/> 8* 300 lbs. 300 Ibs. OR OR r Gravel 400 Ibs. 400 Ibs. I. `Depends on width of rib *nd insulation ussd. Whan mors than ona layar of insulation la inttallad and asphalt is moppad betwaan leyera. add 25 pounds par squars appreaimataly for mopping Patwaan layara. It is absolutely necessary to install insulation on a metal deck before the built-up roofing is applied in order to obtain a i Koppers Roofing Bond. A metal deck must be clean, smooth, and properly snchored o the steel purlins and all joints correctly lapped and fastened. [ Type of metal deck, flute opening and virions other factors determine the type and thickness of insulation required. Con sult your Koppers representative for recommendations. Metal roof decks shall be designed so that they will not have a deflection exceeding' 1/240 of clear spaa under all types of [ roof traffic conditions including mechanical equipment used for roof application. [ SPECIFICATIONS Select clauses at required. Optional clautet in italic. Condition of Surface to Receive Roofing L Metal roof decks shall be dry, clean and free from rust or oily substances. Immediately 'before the application of the insula tion, thoroughly clean the surface of rust and loose material. Roof deck shall be properly graded to outlets. r Application of insulation and Roofing Materials . 1st a. Insulation shall be dry and of an approved type with the thickness dependent upon the width of the flute i i . openings of the metal deck. b. No more insulation shall be installed at any one time than can be protected by pitch and felt in case of sudden weather changes. c. All abutting edges of insulation shall be fitted closely i together but shall not be forced into place. d. Install insulation in steep asphalt applied to deck at rate of 12 to 15 ibs. per 100 sq. ft and place insulation while steep asphalt is still molten to provide good ad i' hesion. e. If slope of deck is one (1) inch per foot or more, insula tion must be able to retain nails and, in addition to being set in steep asphalt, insulation must be fastened to the metal deck with approved mechanical fasteners placed at all four (4) corners and the center of each sheet. If two layers of insulation are specified, top layer joints shall not coincide with joints of bottom layer. Fasteners shsil be driven after the top layer of insula tion is installed. f. For additional information refer to Koppers Supple mental Specifications for metal decks ana specific in sulations for bonding information. g. If U.L. and F.M. requirements are a factor for insur ance rating, insulation must be listed and approved in accordance with their current data. 2nd. Mop a uniform coating of Old Style Pitch over the insula tion preceding the application of roofing membrane. 3rd. Spec. No. 17 Apply over the entire turface. four (4) pliet of Koppers Ap proved Tarred Felt, lapping plies twenty-seven and one-half (27Vs) inches. Mop solidly between each 27(4 inch lap with Old Style Pitch so that in no place shall felt touch felt. 3rd. Spec. No. 18 Apply over the entire surface, three (3) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-four and two-thirds (24-2/3) inches. Mop solidly between each 24-2/3 inch lap with Old Style Pitch so that in no place shall felt touch felt. Alternate: 2nd end 3rd. As a substitute for the first ply of tarred felt apply one ply of Koppers coated base sheet in a solid mopping of steep asphalt directly over insulation lapping each sheet four (4) inches over preceding sheet. Mop entire surface with uniform coating of Ola Style Pitch. Spec. No. 17 Apply over the base sheet three (3) plies of tarred felt, lapping plies twenty-four and two-thirds (24-2/3) inches and mopping solidly between each ply with Old Style Pitch. Spec. No, 18 Apply over the base sheet two (2) pliet of tarred felt, lapping pliet nineteen (19) inches and mopping solidly between each ply with Old Style Pitch. If slope of roof is one (1) inch per foot or more, each ply of felt shall be nailed along the beck or upper edge on twenty-four (24) inch centers. If base sheet alternate is used, each ply of base sheet shall be nailed two (2) inches from the back or upper edge on twenty-four (24) inch centers. 4th. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch into which, while hot, embed not less than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each one hundred (100) square feet. Insulation with Vapor Barrier See Specification No. 204 on page 22. - General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 20 through 26 are a part of this specification and must be sdnersd to where applicable. 11 surface: ?RO?/]EMADE TILE SURFACES SLOPE Up to 1 in. per ft. Deck Construction Poured Concrete r4 S< m Cm** mmttt W cm! tar ptafc Tw# Wyan W tarraJ faH It* M#MWI caal tar pttafc `Twa iaywt f taoW fait Upparf tf* Mappatf ef aaai tar ptofc ydfd aaa ikkM Spec. No. 20--5 ply--10 year Uw Flashing Specification No. 100 for Bonded Roofs noo.'osimdte -vlatc'ii. Q-.-1".'--- :w tractor est'r-.atir ; MATERIALS per 100 Sq. Ft Spec. No. 20 Coal Tsr Pitch 125 lbs. Tarrad Fstt 75 lbs. Although it is prmctical to sst proBMaade tiles in bitumen or mastic, it is not recommended if tile is to be exposed to long periods of sunlight since heat will cause the material to come op through the joints to the surface. This is not only expensive bat difficult to remedy. In order to insure against damage dae to expansion and contraction, expansion joints should be pro vided for sll surfaces exceeding 400 square feet. After tile has been laid all traffic should be barred for at least 24 hoars, after which the tile should bo thoroughly scoured and flushed with water. When any other traffic surfacing materials are applied to a roof, the roofing is considered waterproofing. A bond is not available for each construction. Not* 1. Roofing with promenade tile surfacing it only bondsbls when applied over poured concrete roof decks. 2. Consult Koppers manual on Waterproofing and Dampproof ing for other membrane systems where waterproofing is re quired beneath other types of waving surfaces. Condition of Surface to Rucuhrs Waterproofing Do not apply built-up membrane to any surface which is not smooth and free from projections and holes which might cause rupture of the membrane. Surfaces must be dry. Immediately before the application of the roofing, thoroughly clean the sur face of dust snd loose material. Roof deck shall be properly graded to outlets. Application of Waterproofing Material 1st Mop deck completely with Old Style Pitch. 2nd. Apply over the entire surface two (2) plies of Koppers Approved Tarred Felt, lapping each ply nineteen (19) inches. Mop Old Style Pitch solidly between each 19 inch lap so that in no place shall felt touch felt 3rd. Mop the entire surface of the first two plies of felt preced ing the application of additional piiee with Old Style Pitch. 4th. Apply over the entire surface two (2) plies of Koppers Approved Tarred Felt, lapping plies nineteen (19) inches. Mop Old Style Pitch solidly between each 19 inch lap so that in no place shall felt touch felt 5th. Before laying the tile, the membrane surface shall be thoroughly cleaned and the membrane mopped with Old Style Pitch into which, while hot. embed one (1) layer of tarred felt, 12 lapping each sheet two (2) inches over tha preceding sheet ~N Only part of the membrane surface shall be covered with the last ply of felt at one time, the tile then bang laid over that portion at once. 6th. The vitrified clay tile should be set in not lese than threequarters (3/4) inch of Portland Cement Mortar (1 to 3 mix). The joints should be grouted full with Portland Cement Mor tar (1 to 2 mix). The tile should be laid to show three-six teenths (3/16) inch to one-fourth (1/4) inch joints. Expansion joints throe-quarters (3/4) inch wide filled with plastic mix ture, which must be approved by the architect, shall be pro vided between the tile and all flashings, Either metal or mastic expansion joints should be provided throughout the roof sur face as may be necessary. Expansion joints should extend through to the roofing and should be spaced not more than twenty (20) feet apart in any direction. They should also be installed at all walls, skylights, curbs, etc. Not* a. If insulation is required, use rigid type. b. Tile should be applied just as soon as possible after applica tion of membrane. During freezing weather, exposed felt surfaces shall be glazed with a mopping of pitch. c. The waterproofing is to be applied by a roofing contractor approved by Koppers Company, Inc., who should apply the waterproofing in strict accordance with Koppers Specifica tion No. 20, and requirements, and subject to Koppers inspection snd approval. d. Koppers Company, Inc., will not be responsible or liable for leaks due to the installation, contraction or expansion of Promenade Tile and will not be responsible for the taking up snd replacing of tile in order to locate leaks through the waterproofing. Insulation and Vapor tarriar 1. Insulation without vapor barrier--See Specification No. 20. on page 21. 2. Insulation with vapor barrier--See Specification No. 203 on page 21. General Requirements oa pages 3 through 5 snd Detailed Spec ifications on pages 20 through 2S are a part of this specification and must be adhered to whero applicable. deck construction: Poured Concrete Poured Gypsum Precast Concrete WATER COOLED ROOFS ASLOPE Up to 1 in. per ft. 'SURFACE Double Aggregate (with double pour) Two Uyen ai jfavd m tUf m twe (2) pcurmys c**J tar pitch end tarred f*t lappwf af caai tar pitch _ Poured concrete, fypwei or precaet concrete *Ub deck Specification No. 23 Spec. No. 23--4 ply--20 year Spec. No. 24-3 ply--15 year Um flashing specification No. 110 for bonded roofs r^a:e Mate' ii * es c: *.Cr ; MATERIALS per 100 Sq. FI. Coal Tar Pitch Tarred Felt Gravel OR Slag Spec. No. 23 260 lbs. 60 lbs. 700 lbs. OR 500 lbs. Spec. No. 24 235 lbs. 45 lbs. 700 lbs. OR 500 tbs. 21a Koppers will only bond Water Cooled Roofa when applied over Ponred Concrete, Gypsum or Precaat Concrete Deck*. A Kop pers Roof Bond will not be iaaoed over Metal. Wood. Shreddad Wood Fiber, or airailar decks if they are designed for a water ~ cooling system. Water cooling of a built-up roof may be accomplished by either a spray or ponding system. Since BTU dissipation is directly related to evaporation, a light spray of water hat proven to be the better method to accompliah cooling. If a quantity of water is permitted to pond so as to cover the flag or gravel completely, considerably leas cooling results because of the leaser area ezpoaed for evaporation. Over 90% of the heat ordinarily entering through the roof ean be excluded by the uee of the least quantity of water designed to continuously keep the roof surface damp. Regardless of the cooling method used, it is mandatory that the system be doted down and the roof drained prior to cold weather. Neither the roofing nor the structure will withstand the expansion caused by ice formations. The water cooled roof may be used alone or in conjunction with air conditioning equipment. When it is an adjunct of an air conditioning system, leae refrigeration will be reqnired for cooling within the building. Water required for air conditioning may be piped from the condenser to the roof for use in the roof cooling system. If water should be expensive or scsree.it should be noted that it is possible and practical to have it recycled from the roof to the air conditioning equipment with proper screening. SPECIFICATIONS Select clauses at required. Optional clautet in italic. Condition of Surface to Receive Roofing Do not apply built-up roofing to concrete surfaces which are not reasonably smooth and free from projections and holes which might cause rupture of the membrane. Surfaces must be dry. Immediately before the application of the roofing, thoroughly clean the surface of dust and loose material. Application of Built-up Roofing 1st Mop deck completely with Old Style Pitch. 2nd. Spec. No. 23 Apply over the entire turface four (4) pliet of Koppert Ap proved Tarred Felt, lapping piles twenty-seven and one-half (27Vi) inches. Mop solidly between each 27Vt inch lap with Old Stylo Pitch so that in no place shall felt touch felt. 2nd. Spec. No. 24 Apply over the entire surface three (3) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-four and two-thirde (24-2/3) inchee. Mop solidly between each (24-2/3) inch lap with Old Style Pitch so that in no place shall felt touch felt. All felt shall be turned up not lese than four (4) inches at vertical surfaces. 3rd. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, into which, while hot embed not less than four hundred (400) pounds of clean dry gravel or three hundred (300) pounds of slag for each 100 square feet 4th. All loose gravel or slag shall be swept from surface and a second uniform pouring of approximately -eighty-five (85) pounds of Old Style Pitch shall be applied over the gravel or slag, into which, while hot shall be applied a second layer of three hundred (300) pounds of gravel or two hundred (200) pounds of slag for each 100 square feet The entire surface shall then be thoroughly broomed free from all loose gravel or slag. It is advisable to roll the finished surface with a light roller so that aggregate is thoroughly embedded. Note a. At points where water pressure from the spray may be exces sive. the roof surface should be protected with treated board platforms or other suitable construction to break the force of the water. These platforms should be laid on top of the roof surface and not fastened to the deck. b. Insulation under a water cooled roof should be of a type which is rigid, dimensionally stable with'high compressive strength and of a sealed cellular structure such as Foamglas. c. At all points where roofing membrane meets a vertical sur face, Koppers Flashing Specification No. 110, listed on page 18 must he applied. ' General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 20 through 25 are a part of this specification and most be adhered to where applicable. 13 SLOPE 2 in. minimum--3 in. maximum SURFACE Aggregate Spec. No. 300A-5 ply-20 year Saa paragraphs A-l. B-l, C-l & D Spec. No. 2500A-4 ply-15 year See paragraphs A-l, B-l, C-2 A D deck construction: V/OOD, PRECAST or POURED GYPSUM DECKS Spec. No. 800A--4 ply-20 year See paragraphs A-2, B-2, C-3 & D Spec. No. 3200A--3 ply--15 year Saa paragraphs A-2. B-2, C-4 & O MATERIALS Koppara Asphalt Primer (excapt on metal) ---3C-V Koppers No. 15 Asphalt Felt ;r Koppers Steep Asphalt Roofing Gravel or Roofing Slag PRECAST or POURED CONCRETE and METAL DECKS Spec. No. 300A (20 Year) 75 lbs. 125 lbs. 400 lbs. 300 lbs. Spec. No. 2500A (IS Year) 60 lbs. 100 lbs. 400 lbs. 300 lbs. Spac. No. BOOA (20 Year) 1 gal. 60 lbs. 150 lbs. 400 lbs. 300 lbs. Spec. No. 3200A (15 Year) Igat. 45 lbs. 125 lbs. 400 lbs. 300 lbs. SPECIFICATIONS Condition of Surface to Receive Roofing FOR WOOD DECKS: Same as daacribed under Spec. No. 1. FOR POURED AND PRECAST GYPSUM: Same aa daacribed under Spec. No. 12. FOR POURED AND PRECAST CONCRETE: Same aa described under Spec. No. 5 and Spec. No. 10 respectively except that on decks not permitting nailing, treated nailing strips should be spaced not more than twenty-four (24) incbee apart FOR METAL DECKS: Same as described under Spec. No. 17 (For application of insulation see Spec. No. 17). The insulation must be a type that can retain nails and must be fastened securely to the deck by means of approved mechanical fasteners which shall be placed at each corner and at tha canter of each sheet of insulation. When more than one layer of insulation is applied fasteners shall be driven after top layer of insulation is applied. Application of Roofing Materials 1st A-l (Spec. No. 300A and Spec. No. 2300A) Over the entire surface lay two (2) plies of {Coppers No. 15 Asphalt Felt. Lap each sheet nineteen (19) inches over preceding sheet Nail in place. A-2 (Spec. No. SOOA and Spec. No. 3200A) Over Poured Concrete: Coat entire surface with Koppers Asphalt Primer. Over Precast Concrete: Hold asphalt primer back two (2) inches from all slab joints. 2nd B-l (Spec. No. 300A and Spec No. 2500A) Mop entire sur face with Hoppers Steep Asphalt into which, while hot. shall be applied the felts. B-2 (Spec. No. 800A and Spec. No. 3200A) Over Poured Concrete: Mop deck completely with Koppers Steep Asphalt Over Precast Concrete: Mop deck with Koppers Steep Asphalt holding back two (2) inches from all joints. Over Metal Decks: Mop insulation completely with Koppers Steep Asphalt 3rd C-l (Spec. No. 30QA) Over the entire surface lay three (3) plies of Koppers No. 15 Asphalt Felt lapping each sheet twentyfour and two-thirds (24-2/3) inches over the preceding sheet Mop the full width under each ply with Koppers Steep Asphalt and nail through flat tin discs two (2) inches from the upper edge on nine (9) inch centers. C-2 (Spac. No. 2500A) Over tha entire surface lay two (2) plies of Koppers No. 15 Asphalt Felt lapping each sheet nine14 teen (19) inches over the preceding sheet Mop the full width under each ply with Koppers Steep Asphalt and nail through flat tin discs two (2) inches from the upper edge on nine (9) inch centers. C-3 (Spec. No. SOOA) Over the entire surface lay four (4) plies of Koppers No. 15 Asphalt Felt lapping each sheet twentyseven and one-half (27V4) inches over the preceding sheet. Mop the full width solid under each sheet with Koppers Steep Asphalt and nail through flat tin discs on nine (9) inch centers. On precast concrete decks the first mopping is to be held back two (2) inches from all joints. C-4 (Spac. No. 3200A) Over the entire surface lay three (3) plies of Koppers No. 15 Asphalt Felt, lapping each sheet twenty-four and two-thirds (24-2/3) inches over the preceding sheet Mop the full width solid under each sheet with Koppers Steep Asphalt and nail through flat tin discs on nine (9) inch center. On precast concrete decks tha first mopping is to be held back two (2) inches from all joints. 4th 0 Over the entire surface apply a uniform coating of Koppers Steep Asphalt into which, while hot. embed not less than 400 lbs. gravel or 300 lbs. of slag for each one hundred (100) square feet. General Koppers Steep Asphalt shall not be heated above 475`F and shall not be applied to the roof at a temperature of lets than 400* F. At junction of steep and flat roofing, the roofing on the flat surface shall be carried up the inclined surface not less than twenty-four (24) inches before the steep roofing is applied. Application of steep roofing shall start at the point of junction with the fiat roof. NOTE: Koppers Company, Inc., will issue roofing bonds when roofing is applied according to Specifications Noe. 300A, 800A 2500A. and 3200A, in accordance with General Requirements General Requirements on pares 3 through 5 and Detailed Spec ifications oa pages 20 through 21 are a part of this specification end must be adhered to where applicable. SLOPE 3 in. minimum--9 in. maximum SURFACE Mineral deck construction: " Spec. No. 31A--15 year See paragraphs A-l, B-l, C Spec. No. 4A--10 year See paragraphs 8-2 & C Spec. No. 33A--15 year See paragraphs A-2. B-l & C Spec. No. 9A--10 year See paragraphs A-2, B-3 & C Spec. No. 34A-15 year See paragraphs B-l A C Spec. No. 35A-10year See paragraphs B-2 & C MATERIALS Koppers Asphalt Primer Red Rosin Sheathing Koppers Steep Asphalt Koppers No. 15 Asphalt Felt Koppers Selvage-Edge Rfg. WOOD DECKS POURED CONCRETE POURED GYPSUM PRECAST GYPSUM PRECAST CONCRETE Spec. No. 31-A (15 year) 5 lbs. 90 lbs. 30 lbs. 110 lbs. Spec No. 4-A (10 year) 60 lbs. 30 lbs. llOlbe. Spec No. 33-A (15 year) 1 gal. 120 lbs. 30 lbs. 110 lbs. Spec No. 9-A 10 year) 90 lbs. 30 lbs. 110 lbs. Spec Spec. No. 34-A No. 35-A (15 year) (10 year) 90 lbs. 30 lbs. 110 lbs. 60 lbs. 30 lbs. 110 lbs. 21a RcT Condition of Surface to Receive Roofing Materials OOD DECKS: Same u described under Spec. Noe. 1. 2 and 30. POURED CONCRETE AND POURED GYPSUM: Same as described under Spec. Nos. 5 and 7. PRECAST CONCRETE: Same as described under Spec. Nos. 10 and 11. PRECAST GYPSUM ANO GYPSUM METAL BOUND PLANKS: Sams as described under Spec. Nos. 12 and 13. Application of Roofing Materials A. Preliminary Procedure A-l (Spec. No. 31-A) Apply at right angles to incline of roof one (1) thickness of twenty-five (25) pound (5 pounds per 100 sq. ft) sheathing paper over the entire surface of the deck lapping each sheet one (1) inch over the preceding sheet Nail to hold in place. A-2 (Spec. Nos. 33-A and 9-A) Apply to the entire surface of the deck a priming coat of Asphalt Primer and allow to dry for a period of not less than six (6) hours. Than: (a) Over Poured Concrete: Mop deck completely with Koppers Steep Asphalt ' (b) Over Poured Gypsum: Strip mop the deck with six (6) inch wide moppings of Koppers Steep Asphalt B. Application of Asphalt Felts B-l (Spec. Nos. 31-A, 33-A and 34-A) Apply at right angles to the incline over the entire surface, two (2) plies of Koppers No. 15 Asphalt Felt, lapping plies nineteen (19) inches. Nail each ply of felt two (2) inches from upper edge eighteen (18) inches o.c., with one and one-half (1V&) inch barbed roofing nails through fiat tin discs (or with staples for gypsum decks). Mop solidly between plies with Koppers Steep Asphalt B-2 (Specs. Nos. 4-A and 35-A) Apply at right angles to the incline over the entire surface, one (1) ply of Koppers No. 30 Asphalt Felt lapping ply four (4) inches. Nail each ply edge on eighteen (18) inch centers with one and one-half (1V4) inch rbed roofing nails through flat tin discs (or with staples for psum decks). B-3 (Spec. No. 9-A) Apply at right angles to the incline over the entire surface, one (1) ply of Koppers No. 30 Asphalt Felt lapping sheets six (6) inches. Mop solidly each 6-inch lap with Koppers Steep Asphalt Nail each ply two (2) inches from lower edge on eighteen (18) inch centers. When nailing strips are used, the felt shall be secured with three (3) one (1) inch barbed roofing nails through fiat tin discs. two (2) inches, ten (10) inches, and eighteen (18) inches respec tively from the upper edge at each nailing strip. C. Application of Mineral Surfaced Roofing (Spec. Nos. 4-A, 9-A, 31-A, 33-A, 34-A and 35-A) Beginning at the low point, thoroughly mop a portion of the asphalt felt surface with Koppers Steep Asphalt, into which, while hot, embed a sheet of selvage edge mineral surface roof ing, this to run across the slope of the roof. Selvage should be on upper edge. Nail in double staggered course along selvage with one (1) inch barbed roofing nails through flat tin discs, kept two (2) inches from the mineral surfacing and twelve (12) inches o.c. for each course. Mop the selvage of the sheet just laid and the adjacent area of asphalt felt surface with steep asphalt and into this, while hot, embed thoroughly the next sheet of mineral surfaced roofing, taking care that the lower edge meets the edge of the mineral surfacing of the sheet below. Nail as described for previous sheet Repeat the process of laying sheets of mineral surfaced roofing shingle fashion until the entire area has been covered. Lap ends six (6) inches, nail ing the underlying sheet with six (6) one (1) inch barbed roof ing nails through flat tin discs, starting one (1) inch from the lower edge, spaced five (5) inches o.c. Coat the underside of mineral surfaced roofing at each end lap with Steep Asphalt and firmly embed in the surface of the underlying sheet Care fully rub down edges. Where incline exceeds four (4) inches to the foot roofing may be applied up and down the slope instead of across it Whsn nailing strips are installed, sheets shall be nailed along the selvage edge with.three (3) inch wil* driven through fiat tin discs, spaced five (5) inches apart, at each nailing strip and set back two (2) inches from the mineral surface. General Mineral surfaced roofing is to be cut in strips not exceeding hventy (20) feet in length prior to using, and is to be stacked fiat for a sufficient time to permit those strips to become per fectly flat Asphalt felt and mineral surfaced roofing shall be laid without wrinkles or buckles. Steep Asphalt shall not be heated above 'four hundred seventy-five (475) degrees F. At junction of steep and flat roofing, the roofing on the flat surface is to be carried up the inclined surface not less than twenty-four (24) inches before steep roofing is applied. Appli cation of steap roofing shall start at the point of junction with the fiat roof. General Requirements oa pages 3 through 5 and Detailed Specifications on pages 20 through 2C are a part of these specificationa and must be sdhered to where applicable. 15- HOPPERS FLASHING SPECIFICATIONS Specification Number iaaUrwhft 107 6. 7,8 106 6.7.8 110 1. 2. 6. 7 108 3.6.7 101 4. 6. 7. 8 100 5.6,7 Sewers! Metal Cap Composition Base Mineral Surface Metal Cep Composition Base Mineral Surface Metal Cap Asbestos Base Tar Coated Surface CUssHleatie* 20 year Type 15 year Type 20 year or 19 year Type Metal Cap Reinforced Asbestos Bees Asphalt Coated Surface 20 year Type Matal Cap Composition Base Mineral Surface Metal Cap Matal Base Metal Surface 10 year Type Not Bonded Brief Deecriedaw Asphalt primer 4 plies No. 15 asphalt felt 1 ply 90* Mineral surface All plies sat in steep asphalt or flashing cement Top nailed every 10* o.c. maximum Metal cap and pointing Asphalt primer 3 plies No. 15 Asphalt felt 1 ply 90* Mineral surface All plies sat in stem* asphalt or flatting cement Top nailed every 10* o.c. maximum Matal cap and pointing Concrete priming oil (coal-tar) 2 plies No. 15 tarred felt 2 plies No. 15 tarred erhaato* felt All plies sat in tar base cement Top nailed every 10* ox. maximum Heavy top coat of tar base cement Metal cap and pointing * Asphalt primer 1 ply No. 15 asphalt (ibestoe fait 1 ply reinforced asphalt asbestos fait Both plies set in flashing cement Top nailed every 8* o.c. max. plus all end laps at top and into cant above cant mid-point. Strip all end joints Heavy tap coat of flashing cement Metal cap and pointing Asphalt primer 2 plies No. 15 asphalt fait 1 ply 90# Mineral surface All plies sat in steep asphalt or flatting cement Top nailed every 10* ox. maximum Metal cap and pointing 2 plies No. 15 tarred felt Bath piles set in solid travelings of tar base cement Prior to setting matal base, coat vertical and horizontal of flashing with tar base cement .. Set metal base and nail flange 4* o.c. maximum ' 2 strips of No. 15 tarred felt over flange in coal tar pit Top pouring of coal tar pitch and aggregate surfacing Metal cap and pointing NOTSS: 1. This (pacification muat be used in conjunction with Koppafa bonded watar cooiad roof*. ,, 2. Till* (pacification 1* racommandad far usa with any coal tar pitch roof (pacification whara ponded or (tending watar will lay in contact with the flathing. _ ,,, 3. Thic (pacification may be uaad a* an alternate to Specification Not. 107. 106 and 101 when to (pacified by fhe architect. 4. A cant atrip may be uaad with tin* flathing conttructlon. 5. Thic i( metal work and therefore flatting Is not bondable. Thia (pac ification (hould be uced with Promenade Tile roof*. No. 20 when bonded roofing i( required. 6. All End lap* of pile* of flatting systems mult be (tattered or broken with underlying pliet. 7. Nailing (trip* mu(t be provided where necettary to ataure maximum holding power. 8. Flatting Specification No. 108 may be uced a* an alternate when (pacified by the architect. GENERAL Flashings must be installed at all intersections formed by vertical surfaces. Their importance cannot be stressed too strongly--the value of a good roof installstion will be completely lost if inadequate or poorly installed flashings are employed. Hoppers flashings are an integral put of a Hoppers roof. Designed for flexibility so that slight movements do not dislodge them and fastened securely to the wall, they give many years of service. Flashing is not only affected by expansion and con traction of the material itself, but also oy the expansion and contraction of the construction to which it is at tached. It is particularly important that the top edges of the flashing be protected by counter-flashing which will insure a diversion of the water away from any opening that might develop between flashing and walL Flashing should be installed as roofing progresses. Metal counter flashing should be installed as flushing progresses. If a delay is anticipated, the top of the flash ing must be trowelled with flashing cement to prevent water from entering behind the flashing until the 16 counter flashing is installed. All Hoppers flashings except where indicated require a metal cap flashing to be inserted in the raggle imme diately upon completion of base flashing. The cap flash ing is to extend into the raggle not less than two (2) inches and is to have not less than a four (4) inch exposed apron extending down over the base flashing. Com pletely fill the raggle with Hoppers flashing cement NOTE: X. If bonded flashing is required, it must be installed in con junction with a Hoppers bonded roof and can be bonded for standard periods up to but not greater than the period for which the roofing i* bonded. 2. If a Hoppers 25-year bonded roof is specified. Flashing Specification No. 110 or No. 108 shall be used in lieu of Flashing Specification No. 107 3. Hoppers asphalt primer and asphalt flashing cement maj j substituted for primer and steep asphalt in Flashing Specific ' tions No.'s 107,106 and 101. 4. Metal Cap flashings are not bondable and are not included under any flashing bond. 5. Metal work of any description used as flashing or a part of a flashing system is not bondable and is not included under any fliihinf bond. 21a Materials Fltas ar Coats Required Unit* -.pnalt primar .0. 15 Asphalt Fait JO# Mineral Surface Staap Asphalt or Flashing Camant Asphalt Primar No. 15 Asphalt Fait 90# Mineral Surface Staap Asphalt or Flashing Camant 1 Qai. 4 4 sq. ri. (3' x 144 LF* 432 sq. ft) 1 1 sq. rl. (3' x 36 LF* 108 sq. ft) 5 Lbs. or 5 Lbs. 1 Qal. 3 4 sq. rl. (3' x 144 LF* 432 sq.ft) 1 1 sq. rl. (3' x 36 LF* 108 sq. ft) 4 Lbs. or 4 Concrete Priming Oil No. 15 Tarred Fait No. 15 Tarred Asbestos Fait Tar Base Camant 1 2 2 5 Qal. 4 sq. ri. (3' x 144 LF* 432 sq. ft) 4 sq. rl. (3' x 144 LF* 432 sq. ft) Approximata Material Quantity* (for contractor aitimatin* purposas only) For 100 Hnaal foot By 12' or 1 aquara VS Qal.--(basis 300 sq. ft par gallon} 1 Roll 1 Roll 100 lbs.--(basis 5 x 20 lbs. par 100 sq. ft) 200 lbs.--(basis 5 x 40 lbs. par 100 sq. ft at Via* par coat) Vi Qal.--(basis 300 sq. ft par gal.) 54 Roll 1 Roll 80 lbs.--(basis 4 x 20 lbs. par 100 sq. ft) . 160 lbs.--(basis 4 x 40 lbs. par 100 sq. ft at Via' par coat) Vi Qal.--(basis 300 sq. ft par gallon) Vi Roll Vi Roll 264 lbs.--(basis 4 x 44 lbs. par 100 sq. ft at Vis' par coat interpiy) (basis 1 x 88 lbs. par 100 sq. ft at Vi' par coat top coat) Asphalt Primar No. 15 Asphalt Asbestos Fait Reinforced Asphalt Asbestoa Fait Flashing Camant 1 1 1 3 Qal. 4 sq. ri. (3' x 144 LF* 432 sq. ft) 1sq. rl. (3' x 36 LF* 108 sq. ft) Lbs. Vi Qal.--(basis 300 sq. ft par gal.) Vi Roll 1 Roll 240 lbs.--(basis 3 x 80 lbs. par 100 sq. ft at Vi' par coat) Asphalt Primar No. 15 Asphalt Fait 90# Mineral Surface Staap Asphalt or Flashing Camant No. 15 Tarrad Fait Tar Base Camant --No. is Tarrad Fait Stripping for stripping metal flange .oal Tar Pitch 1 Qal. 2 4 sq. rl. (3' x 144 LF* 432 sq. ft) 1 1 sq. rl. (3' x 36 LF* 108 sq. ft) 3 Lbs. or 3 Lbs. 2 4 sq. rl. (3' x 144 LF* 432 sq. ft) 3 Lbs. 2 strips 2 4 aq. ri. (3' x 144 LF* 432 sq. ft) Lbs. . ______________ * Vi Qal.--(basis 300 sq. ft par gal.) Vi Roll 1 Roll 60 lbs.--(basis 3 x 20 lbs. par 100 sq. ft) 120 lbs.--(basis 3 x 40 lbs. par 100 sq. ft at Vis' par coat) w-Ibs.--(basis 3 x 44 lbs. par 100 sq. ft at Vis' par coat) Vi Roll--(2 strips over flange) 25 lbs.--(sitting strips--does not Include top pour) Specification No. 107 106 ggggg METALCAP COMPOSITION BASE MINERAL SURFACE BS'.*U*.*IH* LCwwt Seel 4f ef fUm with t kM nil| Km, ffaaa# n> OMIS'Q.CMm. *mtar RfoilammNae--tsAAaMM*Fm* tSUam*U NIadt*lCXmaM7 --i Pirn Wai Ml* Kaeeaa **** Nano. Kappaa SaaSa|Wt>aia naiad a Cm nr af a til p ham 2 m. Cant Strip to be nap. pad aNk OM Stytr FMi m Hat Seah, ar Happen Staap AaphaS aa Staap taai. Cant Stnp (Weed Cam Stop fa. VeedDadB). ICappma baj p taaAa| ' L ,A O * ' a . -*1 OeaSaltypai* . Application Extend plies of roofing felts and pitch stoppings up all walls, parapets and euros for a distance of two (2) inches above cant strip. A raggle not lass than eight (8) inches above the roof deck is to be provided. Prims all masonry walls from top of roofing felts to raggle with Koppera Asphalt Primer. Allow to dry thoroughly. Mop on with Koppers Steep Asphalt a strip of No. 15 Asphalt Felt extending from the raggle to not leas than four (4) inches on the roof deck. On top of this apply a second strip of Asphalt Felt with moppings of hot Steep Asphalt, extending the felt onto the roof deck one (1) inch beyond the preceding strip. Mop on additional strips in a similar fashion until a four-ply 20 year Specification No. 107 or a three-ply 15 year Specification No. 106 reinforcement has been obtained. Mop on with Koppers Steep Asphalt a strip of 90 pound mineral sur face roofing felt of sufficient width to extend from the raggle to the surface of the deck. Nail with one and one-half (1V) inch barbed roofing nails through flat tin discs at upper edge approximately ten (10) inches o.c. (For brick or block construction, "ail into vertical mortar joints. For concrete construction, nail to treated wood nailing strips set a flush with the surface.) Asphalt felts are not to exceed ten feet three inches (1(T3') in length. Ends of connecting strips are to overlap three (3) inches and are to break at least twenty-four (24) inches with and laps of underlying strip. End laps shall be thoroughly mopped with staap asphalt The strips of Mineral Surfaced Roofing shall be cut from across the roll so that the end of each strip shall have a two (2) inch selvage. The two (2) inch selvage shall be coated with Flashing Cement and shall be overlapped by the overlying sheet and be thoroughly pressed into place. All plies of felt shall be firmy pressed into moppings of steep asphalt so that there will bo no wrinkles in the finished surface. Install metal cap fl***""f 17 Specification No. 110 20 & 15 year type (for water cooled roofs) METAL CAP COMPOSITION BASE (2+2) COATED SURFACE Application Cant strips shall be installed at the ancle between the roof deck and the parapet wall or any other similar perpendicular surfaces. Krtend plies of roofing felts and pitch moppinfs up all walls for a distance of two (2) inches above cant strip. ,, A raggie of not leas than ten (10) inches above the roof deck is to be provided. Prime all masonry walla from top of roofing felts to raggie with Koppers Concrete Priming Oil (coal tar baae). Allow to dry thoroughly. Set two plies of Koppers Approved Tarred Felt in troweling! of Koppers tar baae roof cement Have plies extending from the bottom of the raggie; the first extending out onto the deck not lets than four inches from the bottom of the cant strip, and the second, one inch beyond the first Over this apply two layers of tar saturated asbestos felt similarly imbedded in Koppers Tar Baae Roof Cement, each ply extending onto the deck one inch beyond the preceding ply. Hail with one and one-half (IV4) inch barbed roofing nails through fiat tin discs at upper edge approximately ten 10) inches ox. (For brick or block construction, nsil into vertical mortar joints. For concrete construction, nail to treated wood nailing strips set in fhufrwith the surface.) " Felts are not to exceed tsn feet three inchao (10'3*) in length. Ends of connecting stripe are to overlap three (3) inches and are to break at least twenty-four (24) inches with laps of underiving strip. All plies of felt snail be firmly prewed into the trowelings of Koppers Tar Baae Boot Cement so that there will be no wrinkles in the finished surface. Coat the entire surface of the competition base flashings with a heavy troweling of Koppers Tar Base Roof Cement Install metal cap flashing. NOTE: This spsciflcatlan must bwfeHawed tor fleshing of 20 or 15 year term Koppers oonpwt water cooled roots. It may be specified (or uta with any Koppers bonded root in lieu of ctandsra fleshing specification where additional protection against water laying in contact with flashing is anticipated except Specification No. 20. Specification No. 108 20 year type * (reinforced asbestos) METAL CAP ASBESTOS BASE (1+1) COATED SURFACE S.nSS&=SS fofffa peiwtod w# wkk Keppert flidtwg Csmmt . Mt*J Ceenter Relief Seel # Mlye l pfict wttfc Keppan Rediinf CemeM. ttmeiyftewlfc--we m------r--e.ppm fiwfct.wj. Ajfcasaa* fell mt 'mKe Prim* W| wi* K< Ktppert MtWbe nemel e Cad Ship aed ap Wat at laa* 2 as Cam S*np to ba map. M* OW Styfe Kfa* Art tea*, m Keepan Steep asphalt CVanpt tSltMrip fdWepd Caat Ship fat Kappaw hidt ap taafiwg ~~ SSBSBB33SBSM2 } 2 nNfto -a; f 4" mm teebf ^-Si Omtaltypaa- Application Extend plies of roofing felts and pitch moppinga up all walls, parapets and curbs for a distance of two (2) inches above cant strip. A raggie not ieaa than eight (3) inches or rpora than twelve (12) inches above the roof deck is to be provided. '- Prime all masonry walls from top of roofing felts to raggie with Koppers Asphalt Primer. Allow to dry thoroughly. In a uniform coating of Koppers Flashing Cement, install one (1) ply of Koppers No. 15 Asphalt saturated asbestos felt extending from the raggie to not less than four (4) inches from the base of the cant onto the roof. On top of this apply a second uniform coat of Koppers Flashing Cement into which embed one (1) ply of Koppers reinforced asbestos base flashing (reinforced fabric side down). Nail with one ana one-half llVt) inch masonry roofing nails through flat tin diagg along upper sdga eight (8) inches o.c. maximum into mortar iointa. For concrete 11 MU wain at nail to treated wood nailing strips sat in flush with the surface with appropriate nail through fiat tin discs. End laps for the two (2) plies shall be nottesa than three (3)1 Inches and staggered not lesa than twenty-four (24) inches. End lap* of reinforced base shall be nailed ver tically a minimum of once into the wail at upper edge and once into the cant at a point not lower than the mid point of the cant. End laps of reinforced beae after nailing shall be covered with a strip of Koppers asbestos felt not less than four (4) inches wide set in a coating of Koppers Flashing Cement. Coat entire surface of flashing with Koppers Flashing Cement (including nail caps along top edge of flashing aa well aa top edges of felts to seal at wall). Interply and top coatings shall be troweled uniformly, ftfil height and continuously approximately one-eighth (Vi) inch thick. Piiee must be laid w smoothly with no pockets, wrinkles or buckles. Install metal cap flashing. Nets: Hot applied steep asphalt may be used as an alternate to the two (2) interply troweiiings of asphaltic plastic cement. All other requirements of this specification must be adhered to. J 18 \ Specification No. 101 10 year type METAL CAP COMPOSITION BASE MINERAL SURFACE 21a *Ko I M*t*J Cmmtm toffW AoDllcation C*m*L Extend plies of roofing felts and pitch moppings up all walls, parapets and 1 SuJ #4y rth lUppm Rwfc^f CnwwL curbs for a distance of not less than six (6) inches above the roof deck. A raggle of not leas than eight (8) inches above the roof deck is to be pro vided. l rkf K h. MmiI Sirfmi ftaaf* `*1 Mt . K.ppft Strd r Prime all masonry walls from top of roofing felts to raggle with Hoppers Asphalt Primer. Allow to dry thoroughly. Mop on with Koppers Steep Roof <Mpt*t RggJuwf Cimtnt. ing Asphalt a strip of No. IS Asphalt Felt extending from a height of not leas I Vj * N*J* tivWffc than eight (8) inches on the vertical surface to four (4) inches out on the roof mTm Ottk m 10* wiw. deck. On top of this apply a second strip of Asphalt Felt with moppings of hot t ** r.a.i is A^iftkM *ahCi.w T* mm< <W Ji*. mm > Pn*m W*| Kippw Afih<ft steep asphalt extending the roofing felt onto the roof deck one (1) inch beyond the preceding strip. Mop on with Hot Steep Roofing Asphalt a strip of 90-pound mineral surface roofing felt of sufficient width to extend from the raggle to the surface of the deck. Nail with one and one-half (1V4) inch barbed roofing nail through fiat tin discs at upper edge approximately ten (10) inches o.c. ^KaWpnl t--fIMtpMf Mt l t*Wb*.I wt.nW^ mppij Mth OU Styta M ft#t Kpph, r Kfp-- Site# m (For brick or block construction, nail into vertical mortar joints. For concrete construction, nail to treated wood nailing strips set in flush with the surface.) Asphalt felts are not to exceed ten feet three inches (10^*) in length. Ends of connecting strips are to overlap three inches and are to break at least Pippin M > t--fcf. twenty-four (24) inches with end laps of underlying strips. End laps shall be thoroughly mopped with steep asphalt The strips of Mineral Surfaced Roofing shall be cut from across the roll so that the ends of each strip shall have a two (2) inch selvage. The two (2) inch b'?Jv>A _.! fs <- *' o - <> tTvO\\ .-SC * ,T* rt*"4 4 J"4 ^ 14 - a - ` ''4 ; selvage shall be coated with Flashing Cement and shall be overlapped by the overlying sheet and be thoroughly pressed into place. Install metal cap flashing. 0*th A lyp.ti-. --- J NOTE: Cent strip may bs specified tar ues srfth tNs seeeMcatfon. Specification No. 100 All metal METAL CAP COMPOSITION UNDERLAYMENT METAL BASE METAL SURFACE For Wood and Precast Gypsum Decks: Extend first two (2) plies of dry roofing felt up vertical surfaces for a distance of not less than four (4) inches and cut off the remaining plies at the angle of the roof deck. Felt Underlayment Felt reinforcement is required with all metal base flashing at walls, skylight curbs and at any other vertical surface above the roof level which is to be flashed with metal base flashing. Prior to installing the metal base flashing, set two (2) plies of No. 15 tarred felt in solid troweling* of Koppers tar base cement Plies shall extend from the bottom of the raggle or not less than a point six (6) inches in height, down the vertical wall and out on to the deck for distance of not less than four (4) inches and five (5) inches respectively. Coat the entire surface of the top ply with tar base cement before installing the metal base flashing. End laps of the two underlayment plies shall be staggered and thoroughly sealed. * Installation of Metal Sase and Counter Flashing A raggle of not less than ten (10) inches above the roof deck is to be provided. The metal base flashing shall extend up the vertical surface not less than ten (10) inches and onto the roof deck not lees than four (4) inches. Nail base flashing to the deck with one and one-half (1V4) inch barbed roofing nails, one (1) inch from outer edge of metal flange on four (4) inch center. For concrete deck, a nailing strip of treated wood shall be set in the concrete flush with the surface. Over the part of tha metal base flashing extending onto the roof, apply two (2) strips of tarred felt with alternate moppings of roofing pitch. Metal cap flashing shall be installed immediately so as to prevent seepage of water behind base flashing. . Metal cap Sashing shall extend into tha raggle not leee than two (2) inches and shall have a four (4) inch exposed apron extending down over the top edge of metal base flashing. After the metal cap flashing nas been installed, com pletely fill the raggle groove with Koppers flashing cement, install metal cap flashing. f NOTE: Metal base ftashlna requires felt undarlayments st all wall ingles, t*ytiht cures and ether vertical surfaces before metal base flashing is I installed. 19 w ISULAT]ON SP2C171 Jr\ =71 ^ \ M J VJ th and without vapor barrier illowinf specifications for the installation of insulation lommended so as to provide and insure the owner the urn effect and life of the insulation. . ild the manner of attachment as specified by the mdi- insulation manufacturer conflict with the following, the ion manufacturer's specification shall be followed, pen Company. Inc., Guarantee Bond Covering Built-Up f and Flashing does not cover roof insulation nor will rs Company, Inc, be responsible for any damage caused he result of the use of insulation or its mannsr of attach- 0 the substrate. ction and use of insulations and vapor barriers rest with tigner of the complete system, however. Koppers reserves ht to accept or reject any materials used in conjunction bonded roofing membrane. Acceptance of materials or 1 of installation shall not'be construed as a guarantee, able portions of General Requirements on pages 3 h 5 are a part of these specifications. illation Cut-offs may be installed, however, provided they are con structed to run in one direction continuously to vented edges and provided no section of the roofing is isolated or blocked from venting. 5. Nalls and Fasteners Nails for use with insulation shall be of sufficient lengths to pass through the insulation and make % maximum penetration into the deck without protruding through it (except for metal decks). If other varieties of fasteners such as clips or cleats are desired, they shall be as recommended by the deck manufac turer. however. Koppers reserves the right to approve or reject these when used in conjunction with its bonded roofing. Ac ceptance does not imply guarantee. Nails shall be galvanized and driven through minimum one (1) inch diameter sturdy gauge tin caps or shall be acceptable integral capped nails such as "Simplex" or equal. Approved mechanical fasteners should ba used for securing insulation to metal decks when required. xjfing insulation must be kept dry at all times and be of 6. Wood Nailers iroved type. roof insulation shall be dry when installed. It should not jfied over anything but a completely dry substrate nor 1 it be applied when subsequent traffic from roofing crews, trades, and equipment may damage it ken or damaged sheets must not be used except after ng and then only used as fill in pieces, se deck slope is one (1) inch per foot or more the insulatust be able to retain nails, or wood nailers must be in[ perpendicular to the slope at each course of insulation, lion for wood nailers in this fashion wiil provide both a e for anchoring of roofing felts which shall be laid perpenr to the wood nailers as well as an insulation stop. Spac- Wood nailing strip* must be provided to form a solid retentive base for anchoring all metal flhmg aprons and flanges. Nailers shall be the full and accurate thickness of the insulation used or exceed it by the dimension of a preformed tapered edge piece. - Nailers shall extend not less than one (1) inch beyond the apton or flange and must be anchored securely to the roof deck or roof deck supporting member directly thereunder. Wood nailers, installed on or in non-naiiable decks for slopes one (1) inch per foot or more or when insulation is required ' s a non-nailable type, shall be run in the direction perpendicul to the direction in which the felts are to be laid. nailers must be sack thakth* tiwnfsttrm iiuaavljtiritis, tilers but must not be fores fitted, more insulation shall be laid at any one time than can be 7. Cant Strips .ted by pitch and felt in case of sudden weather changes, Cant strips are required at all places where the plane of the i of insulation shall be brought i foeety <W*tlps and shall roof meets a vertical surface requiring flashing. Cant strip* i forced into place. Where insulation joun^rerUaal sue- reduce what would otherwise be one sharp 90* bend at the flash the insulation shall be cut in a neat manner allowing at - ing and roofing juncture to two (2) 46" angles. roe-half (Vj) inch clearance. Cant strips on wood decks shall be set on top of the insula en more than one (1) layer of insulation ia used, joints tion and secured to the deck by nailing through the insulation ;h layer shall not coincide. All layers shall be parallel to %ot cut with a shoulder to accommodate the thickness of the ding layers. ^insulation and attached directly to th* deck. -- Cant strip* normally are of wood or preformed- fiber board. por Barrier Cant strips for poured gypsum .or pound conorat* debits may be formed by a poured cant provided a shoulder ia formed to r barriers are normally used where high humidity ccmfiiare to be expected inside the structure tor various reasons, e desirability or necessity for s vapor barrier depends on accommodate the thickness of the insulation which wiil abut it. However, a treated nailer may be installed in poured gypsum or to poured concrete decks to accommodate the insulation variables such ss climatic conditions, soil conditions, ing occupancy, etc. The proper design and specification of vapor barrier, or tbs omission of such vapor barrier, thus lies the sole responsibility of the designer or owner. Any quent failures, due to either the installation or lack of such tlation. will not bo Koppers responsibility. This will also thickness to which a standard cant can be nailed securely. Cant strips on steel deck installations must be anchored securely to a wood nailer which has been anchored securely to the steel deck or steel deck supporting member. Cant strips must be a minimum of 4* x 4" with a 43* sloped face. r if it appears desirable to install such vapor barrier to the rside of the entire roofing assembly. 8. Edga Strips tar Stops (Ternportry Protection) ir stops consisting of two (2) plies of tarred felt and mopi of Old Style Pitch for fiat roofs or asphalt felt and as : for steep roofs extending onto the deck at least six (6) a and four (4) inches on top of the insulation, hn be led at the etui of each day's work over exposed edgee of ebon. ter stops shall be continuous and tight. lie temporary protective measure must be removed cleanly i work is resumed. ut-offs (Permanent Installation) tin* of roof insulation at walls, curbs, eaves, etc., is recomdea. Therefore, cut-offs should not be installed at edges of lation adjoining these areas for venting purposes. Tapered edge strips of fiberboard with a mTfmnm incline of T slope designed for perimeter use to contain water are recom mended. They shall b* placed on top of the insulation and abut a wood nailer shoulder which has been constructed to accom modate the thickness of the insulation plus the thickness of the tapered edge strip. 9. Lightweight Insulating Fills Application of a Koppers Bonded Roof over these types of fi varies according to the characteristics of the fill and the cone. tion under which the roofing material is to be applied. Consult Koppers Supplemental Specifications or contact your Koppers representative for roofing specifications over the type of insu lating fill to be used. A Koppers representative must inspect and approve the condition of the lightweight fill before roofing ia applied. In general, a lightweight insulating fill nnut be able to vent itself and thereby dry. otherwise serious effects to the roofing membrane will result. Koppers will not accept a vapor barrier beneath a lightweight fill nor a fill over a type of substrate that ^**ill not permit adequate venting from below such as poured ncrete, unvented metal decks, etc. ' Provisions should be made wherever possible to provide addi tional venting such as notched wood perimeter nailers, etc., in conjunction with the venting from the underside of the deck. If board type insulation is to be applied over a lightweight fill, a vapor barrier is necessary between the fill and the board insulation to prevent fill moisture from affecting the insulation and roofing. 10. Additional Information Koppers will not bond its roofing over insulations such as Foam- glass and Fiberglas when nailing of the insulation or felts over the insulation is required. On wood decks with inclines under one (I) inch per foot, use Specification No. 201 when installing these insulations. , , . . ,. For information concerning these and other insulations, con sult Koppers Supplemental Specifications. NOTE: 1. Insulations to comply with Underwriters' Laboratories, Inc., Class A. B or C roof coverings must be listed under Under writers' Laboratories Guide No. 360 018 of their Building Ma terials List. For metal deck roofs, insulation must also be listed under their Guide No. 360 R 13.13. 2. Methods of installing insulation are discussed in Koppers Supplemental Specifications. INSULATION SPECIFICATION NO. 200 (Normal Condition*--wtthaut vaear barrier) Wood--Fracas! Gypaum-Matal Bound Gypsum Plank Application of Insulation The roof deck shall be covered with one (1) layer of approved rosin-sized sheathing paper weighing approximately five (5) unds per one hundred (100) square feet. Sheathing paper shall lapped two (2) inches and secured to the deck by nailing. .Over Precast Gypsum and Gypsum Metal Bound Plank Decks 'eathing paper may be omitted. `On decks having inclines up to two (2) inches per foot, each sheet of insulation shall be secured to the deck by nails at each of the four corners and on inclines exceeding two (2) inches per foot, additional nails are to be spaced one (1) foot apart, and stagger-nailed through the longitudinal center of each sheet. All nails shall penetrate the deck at least three-fourths (%} inch. Nailing of two layers of insulation shall be through the second or top layer only. Application of Roofing Above Insulation If more than one layer of insulation ia installed and joints broken, or if ship-lap type is used, roofing above insulation shall be constructed according to Koppers Specifications Nos. 5,7,8-A, 9,32-A, 33,41-A, 800-A or 3200-A, depending upon the siope of the roof. If only one layer of insulation is installed, or if ship-lap type is not used, the roofing shall be applied according to Koppers Specifications Nos. 1. 2, 3-A, 4, 25-A, 30, 31. 40-A, 300-A or 2500-A on wood decks, with the exception that the red rosin paper may be omitted provided it has been installed below the insulation. INSULATION & VAPOR BARRIER SPECIFICATION NO. 201 (Humidity Conditions--wHti vapor Samar) Wood--Psursd ar Precaw Oypaum-Matal doodad Oypauoi Plank Application of Mtmbrane Bafow Insulation 1. The wood roof deck shall be covered with one (1) layer of approved rosin-sized sheathing paper weighing approximately five (5) pounds per one hundred (100) square feet. The sheath ing paper shall be lapped two (2) inches and secured to the deck by occasional nailing. On poured, precast gypsum or gypsum metal bound plank, sheathing paper may be omitted. If joints are not tongue and grooved, they shall be stripped with felt and plastic cement. 2. Two full thicknesses of Tarred Felt shall be laid over the .tire surface, lapping each sheet nineteen (19) inchea over rne preceding sheet and nmiVing the sheets in place. On decks having inclines two (2) inches to six (6) inches per foot, use No. 15 Asphalt Felt. 3. Follow (2) in Specification No. 203 for 2-ply vapor barrier. 4. Extend all felts up vertical surfaces and cut off at height of insulation. 21a *Ko Application of Insulation 1. Mop the entire surface with a uniform coating of Old Style Pitch into which, while hot. firmly embed the insulation. When roofs have an incline of from two (2) inches to six (6) inches per foot, use Steep Roofing Asphalt 2. On decks having inclines two (2) to six (6) inches per foot, each sheet of insulation shall be secured to the deck by nails at each of the four corners, and on inclines exceeding six (6) inches per foot, nails are to be spaced one (1) foot apart along edges and stagger-naiied through the longitudinal center of each sheet All nails shall penetrate the deck at least three- fourths <y4) inch. Nailing of two layers of insulation shall be through the second or top layer only. When insulation is laid in two layers, mop the entire surface of the first layer with Old Style Pitch on flat roofs and Steep Asphalt on steep roofs into which, while hot embed the second layer of insulation. (This is optional aa layers may be clipped together with mechanical fasteners.) Application of Roofing Above Insulation Roofing shall be applied according to Koppers Specifications Nos. 5, 7, 8-A, 9, 32-A, 33, 41-aTsOO-A or 3200-A, depending upon the siope of the root INSULATION SPECIFICATION NO. 202 (HwmalCaniWen* stithsutvsesrkenlsr) Psurati Csncrats NuiW flyeium--Prscsst CsnciWs FOR FLAT DECKS Application of Insulation 1. Apply a uniform coating of Old Style Pitch to the deck. If precast concrete slab or tile deck, strip mop with Old Style Pitch up to four (4) inches from the edge of each joint While the pitch is hot immediately embed the insulation. 2. If there are two (2) layers of insulation, mop the entire first layer with Old Style Pitch into which, while hot embed the second layer of insulation. FOR STEEP DECKS (Incline 2 to 6 inches per foot) Application of insulation 1. Apply a uniform coating of Steep Roofing Asphalt to the deck into which, while hot. embed the insulation. On precast tile or slab deck, strip mop with Steep Roofing Asphalt up to four (4) inches from the edge of each joint 2. If there are two (2) layers of insulation, the entire first layer shall be coated with Steep Roofing Asphalt into which, while hot, embed the second layer of insulation. Each sheet of insulation shall be secured in place by nailing. If two (2) layers of insulation are used nailing shall be through the top layer only. Nails shall be spaced one (1) foot apart and shall pene trate the deck at least three-quarters (%) of an inch and shall be spaced along the edge and sUgger-nailed through the longi tudinal center of each sheet of insulation. When the deck will not permit nailing (which necessitates nailing strips), insulation shall be secured to each nailing strip with nails spaced approximately one (1) foot apart. Application of Roofing Above Insulation The roofing shall be applied according to Koppers Company, Inc. Specifications Nos. 5, 7, 8-A, 9. 20. 23, 24. 32-A, 33, 41-A, 800-A or 3200-A, depending upon the siope of the roof. INSULATION & VAPOR 3ARR1ER SPECIFICATION NO. 203 (HuntiSb* Cenaitiene wltii v#or barrier) PwmS Canerata-Srecast Cencrata Application of Membrane Below Insulation 1. Apply a uniform coating of Old Style Pitch to the deck. On precast concrete slab or tile deck, strip mop with Old Style Pitch up to four (4) inches from the edge of each joint 2. Lay over the entire surface two (2) full thicknesses of Koppers Approved Tarred Felt, lapping each sheet nineteen (19) inchea over the preceding sheet--mopping with Old Style Pitch the full nineteen (19) inches so that in no place shall felt touch felt 3. Extend all plies of felt up vertical surfaces and cut off at height of insulation. Application of Insulation Apply a uniform coating of Old Style Pitch over the entire sur face into which, while not, embed the insulation. If there are two (2) layers of insulation mop the entire surface of the first layer with Old Style Pitch into which, while hot embed the second layer of insulation. Application of Roofing Abova Insulation The roof shall be applied according to Koppers Company, Inc.'s Specifications Noe. 5. 7. 20, 23 or 24. FOR STEER DECKS (Incline 2 to 6 inches per foot) Application of Membrane Below Insulation 1. Apply a uniform coating of Steep Roofing Asphalt to the deck. On precast concrete or tile, strip mop with Steep Asphalt up to four (4) inches from the edge of each joint 2. Lay over the entire surface two (2) full thicknesses of Koppers No. 15 Asphalt Felt at right angles to the incline of the roof lapping each sheet nineteen (19) inches over the pre ceding sheet. Each sheet shall be nailed with one (1) inch barbed roofing nails through flat tin discs eight (8) inches from the upper edge and nails shall be spaced not more than one (1) foot apart Where nailing strips are used the felt shall be nailed with two (2) nails through flat tin discs at each nailing strip placed six (6) inches and eight (8) inches respectively from the upper edge of esch sheet 3. Extend all plies of felt up vertical surfaces and cut off at height of insulation. Application of Insulation Apply a uniform coating of Steep Roofing Asphalt over the entire surface into which, while hot embed the insulation. Each sheet of insulation shall be secured in place by nailing. Nails shall be spaced approximately one (1) foot apart and shall penetrate the deck at least three-fourths (V*) of an inch and shall be placed along edge and stagger-nailed through the longi tudinal center of each sheet of insulation. When the deck will not permit nailing (which necesritatee providing nailing stripe), insulation shall be secured to each nailing strip with nails spaced approximately one (1) foot apart. Nailing of two iayera of insulation shall be through the top layer only. Application of Roofing Above Insulation The roofing shall be applied according to Koppers Company, Inc.'s Specifications Noe. 8-A. 32-A. 41-A, 800-A or 3200-A. depending upon the slope of the roof. INSULATION & VAPOR BARRIER SPECIFICATION NO. 204 (HumMHy Con4Mon-tth vsear heftier) Metal Decking NOTE: Koppers Company, Inc., will not bond roofing over metal decks unless the metal deck is insulated with approved type insulation and thickneaa. Refer to Koppers Supplemental Spec ifications. Application of Mombrano Solew Insulation A. FoItType Coat the riba of the metal deck with Steep Asphalt and then install two (2) full thickneasee of Koppers No. IS Asphalt Felt, lapping each sheet nineteen (19) inches over the preced "s. ing sheet, mopping with Steep Asphalt the full width of t nineteen (19) inch lap. Extend all felt up vertical surfaces an cutoff at height of insulation. B. Vinyl Typo Fire resistant adheeive and vinyl-typo vapor barrier as listed by and applied as specified by Underwriters' Laboratories, Inc., and Factory Mutual may be used. Adequate adhesion of the vapor barrier to the deck and adhesion of the insulation to the vapor barrier for securing the entire system against wind up lift and movement, must be attained. C. Kraft Typo Kraft "snuffer" lamination, applied with Steep Asphalt as listed by and applied as specified by Factory Mutual. Adequate adhesion of vapor barrier to the deck and adhesion of insulation to the vapor barrier for securing the entire system against wind uplift and movement, must be attained. NOTE: 1. Care must bo exercised so that the vapor barrier is not ruptured during installation, particularly in areas over the flutes of the steel deck. NOTE: 2. Vapor barrier method A. above is not rated by U.L. or F.M. for insurance purposes. NOTE: 3. Vapor barrier method C. above is rated for insurance purposes by Factory Mutual only. Application of Insulation A. Felt Type Apply a continuous, uniform coating of Steep Asphalt into which, while hot, embed the insulation. B. Vinyl Type Apply approved adhesive over approved vapor barrier in rib bons at rate specified by U.L. and F.M. ana place inaulation. NOTE: Whan the incline of the roof is one (1) inch per foot or more, the insulation shall be secured to the deck in accordance with recommended procedures of the deck and insulation man ufacturer. Application of Roofing Above Insulation The roofing shall be applied according to Koppers CompanInc.'s Specifications Nos. 8-A, 17, 18, 32-A, 41-A, 300-A 3200-A, depending upon the slope of the roof. ' RE-ROOFING SPECIFICATIONS Due to varying conditions of tbs roof dock and surface of the old roofing, it will be necessary for a representative of Koppers Company. Inc., to approve the type of specifications for re-roofinf if a Koppers Roofing Bond is to be issued. No bond will be issued without prior approval from Koppers. Moisture trapped within an old roofing system will seriously and quicldy affect a new membrane. No bona will be issued over any old insulatad roof regard less of condition unless old roofing and insulation are removed to the deck prior to application of new roofing materials. No exception to this requirement will be permitted unites explicit permission is obtained from the Technical Department of Koppers Company, Inc.. Tar 4 Chemical Division. In general, we recommend the following practice and spec ifications for re-roofing work. NOTE: Koppers Company, lac. Guarantee Bead does not cover roof insulation or failure #f roof deck. The appliesties of a Koppers Bonded Roof over aa old roof shall not constitute a waiver of these conditions. 1. Original deck must bo chocked to determine that it is structurally sound, smooth and in a condition to perform satis factorily for the term expected of the new roofing membrane. If it is not, provisions must first be made to accomplish this vital requirement 2. All wood nailers, metal flashings, drains and flanges, sign supports, flag poles, etc..must be cherkari to determine thmr structural soundness and anchorage, again, to insure they will perform for the term expected of the new roofing membrane. If unsatisfactory or questionable, they must be replaced. 3. Assuming there is no insulation involved, the existing roofing membrane must be checked thoroughly. a. If it has disintegrated to tha extent that it has little value or that its adherence to the deck is questionable (possible blowoff or uplift damage), then ail of the old roofing membrane must be removed. b. If items one (1) and two (2) above are considered satis factory. and the existing membrane can be made smooth clean, it will not be necessary to remove the existing membrane. 22 c. On old roofing, repair all buckles enrf blisters by cutting open, remopping, and applying 2 pliea of felt before new roofing is installed according to re-roofing specifications. Before the application of new roofing, the surface of old roofing shall be made smooth and clean. In places where surface is slightly rough, apply a flood coat of Coal Tar Pitch (for pitch roofs). Asphalt (tor asphalt roofs) may be applied to level the surface. When such procedure does not provide a suitable base for new roofing, install insulation in steep asphalt, over asphalt roofs or pitch, over pitch'tbofs. d. Application ofpair roofing Over Tarred Felt and Rtteh Roofing New roofing shall be applied according to Koppers Specifica tions for over poured concrete decks with the exception that on wood decks, 2 plies of dry felt shall be applied at all places where there is a possibility of pitch ssspage through the deck before the application of new built-up roofing. Over Asphalt Roofing on DecksWhom Nailing Is Rewrites * ' Roofing shall be applied according to Koppers wood deck specifications with the exception that the approved rosin-sued paper may be eliminated If insulation is installed, apply roof ing according to Koppers Specifications for over poured con crete decks, setting insulation in asphalt OverAlpha* Hoofing an Packs Where NailingIs Not Possible ,. Roofing shall be applied according to Koppers concrete da specifications with the exception that each bottom sheet of fet. snail be strip-mopped to the old roofing, and these strip moppings shall be not less then 6 inches apart If new insulation is applied, set in mopping of asphalt to old roofing. Application of New Flashing All old built-up flashing must be removed and new built-up composition installed according to Koppers Specifica tions. FLASHING DETAILS There are numerous flashingdetails that have been proven by ^tperience over the year*. There are normally a number of ceptable construction details for accomplishing one purpose, .'he architect should select a detail that best serves the pur pose under the various and different conditions concerned with the specific job at hand. In certain cases, slight modifications are necessary to adjust a proven detail to job conditions or one method may serve better than another. The details shown in this manual are some suggestions based on experience. Space limitations prohibit listing many others. Design or selection is a responsibility of the architect Koppers representatives are available to review flashing de tails to assist the architect in providing the best details for specific jobs. Vent Pipes, Stacks, Flagpoles, and Other Projections All vent pipes, stacks, flagpoles, or other projections penetrat metal flange must be cemented to the surface of the felt with a ing the built-up roofing, whether indicated on drawings or not mopping of hot coal tar pitch. Over flange apply, with alternate must have a proper metal sleeve flashing with flange, pan flash- moppings, two (2) reinforcing pliee of tarred felt so that the j ing with flange or other flanged fl**t,i"g installed first extends not lew than three (3) inches beyond the outer i Behind metal sleeve and beneath roofing membrane next to edge of the flange and the second not less than six (6) inches. j deck install metal pitch dam as shown in detail. The sheet 1 Roof Drain tea (! mm cm* j Curb expansion joints are to be flashed in accordance with All roof drains shall be provided with metal roof drain flashing < Koppers specifications for'parapet walls and must provide nailing to hold metal cap and hh,g membrane in place, flanges which extend at least 12* beyond drain opening and shall be stripped with felt in accordance with drain detail. All j Metal cap must be designed to expand so as not to disturb drains should be provided with expansion joint sleeves. i flashing. It is the responsibility of the designer of the building to pro- The sheet metal flange furnished with the drain must be ` nde for adequate expansion joints. For the protection of the roofinx system against splits caused jy expansion and contraction. Koppers recommends that an cemented to the surface of the felt with hot coal, tar pitch or flashing cement. Over the flange apply, with alternate moppings or troweling*, two (2) reinforcing plies of tarred felt so I : expansion joint be installed: (1) on large roof areas at least every 200 feet in each direction, (2) at all places where the structural supports and roof assembly change direction. (3) that the first extends not leas than three (3) inches beyond the outer edge of the flange, and the ascond not last than six (6) inches. ' I j where type of deck material changes, (4) where control, expansion, or contraction joints are provided in structural steel, deck material, or deck system. Roof drains must be of a type provided with a wide lead or copper flange. Strainer construction should provide adjust ment for meeting variations in roof laval or slope. 1 FLASHING DETAILS (continued) At all location* where future column*, sign support* and angle Fill metal pan with hot coal-tar pitch or flashing cement. irons are to penetrate built-up roofing, pitch pocket* should be Paint exposed sections of all reinforcing rods with dampproof- provided with a flanged metal pan. ing paint The sheet metal flange must be cemented to the surface of the Aa an alternate to the installation of pitch pockets wooden felt with hot coal-tar pitch or flashing cement. Over die flange curbed bese units with cant stripe can be installed to accept a apply, with alternate stoppings, two (2) reinforcing plies of standard built-up composition-base flashing. Intricate metal tarred felt *o that the first extends not lees than three (3) inchee cap flashings for this unit must be fabricated and continuously beyond the outer edge of the flange and the second not less than welded to the projection to assure a watertight metal cap. six (6) inches. , < Exposed surface of all stub column projections must be pro tected with 3 plies of tarred roofing felt cemented on with a trowel application of Flashing Cement. Felt is to be carried out onto the surface of the roofing felts so that the first extends not less than three (3) inches, the second not less than four (4) inches, and the third not less than five (5) inches. Trowel over the entire surface of felts just applied, one (1) coat of Flashing Cement All stub column projections must have a metal box flashing with flange furnished and installed over the cemented felts. The flange of the metal box flashing must be cemented to surface of the roofing feits with a mopping of hot coal tar pitch. Over the flange apply with alternate mappings, two (2) rein forcing plies of tarred felt so that the first extend* not less than three (3) inches beyond the outer edge of the flange and the second not lees than six (6) inchee. ' < Roof Opening Skylight Roofing Membrane Ventilator Curbs extending 8 inches to 12 inches above root surface shall be provided at all openings for skylights, ventilators, expansion joints, etc., to provide tor in stallation of adequate base flashing. Flashing Nailed 10" O.C. j Base Flashing Materiil /y^ Friluanshmingg M/vwemrnbDrraannev Co_aIlWT_arBPUit.cLh.a.nJd AA_g_gregate Wood Cent 4" x 4" 24 '- 'I ft) -A3H! MG DiTA]L3 (continued) EDGE DETAILS L -ipered Cant Hat and Steep Junction Mia] Grtmei Se** Sat m FI wina | CaiMM 21a TCo ftawfmy I Vm| NJr Raised Edge Kik tpW I* from ttlf of motai strip *ti4 3* apart Amiiffi mo* prone oos3i. 90# Mmtrtl swt*c* roofWtf v kwiH-yp ftalwiy. Hanging Gutter C*alTar Pitch amt Afgrfaf NAIL. 3" O.C NAIlARE CANT 30' O.C. VENT DETAILS Parapet Wait Gnrd Guird nU I* (ram inner *df of Ruf md 3' O.C -Htnft wi<Hh 4' minimum p CmI T* fm* m4 Antra* Too pita of Wt fcetfwred o*tr Renm in Coni Tr Htdt or Tit Sun Rahinf Cement Roofinj Mimbrim FiH nvtiepe NOTE For Mushroom Vent details, see page 26 and refer to Koppers Supplemental Specifications. Teptrad Curt mirimum mdinc r pm w Trailed Wend Niiiar 1-'/,' Vent Htk Opening If te 24' O.C 25 FLASHING DETAILS (continued) Relief Joint i Equipment Support Isolated Flashing For Movement Htgjhi PomfdwithEUghifif CttmmM jfmt A f M*ai Cap yPart | f Matai Cf yFtachinf System Natfad 1CPO.C rAwtia?p*24-o.c Ra*hm M*nfar*n ItMftaahing Mjfarial i I oafirtf M4MHtorn* Roof Vent Insolation WALKWAYS Treated Wood Walkway I I \ 1 i j i I Traffic Pad 26 I I I i i i i i i 21a To Waterproofing and Dampproofing Waterproofing and dampproofing requirements vary ^om one project to another. No two sets of require* uents are precisely the same. Selection of materials and reinforcement, if required, must be given consider able thought, since after installation there is little chance if any to correct an under-specified system or inadequate materials. Experience has proven, that when difficult protection problems have been encountered, coal tar waterproofing and dampproofing systems have been selected and proven equal to the task. Various systems which can be tailored to the specific needs of a project are offered by Hoppers Company, Inc. These systems are primarily based on the superior waterproofing characteristics of coal tar. A copy of Hoppers manual on Waterproofing and Dampproofing is available upon request Contact your local Hoppers representative or the District office serving you listed on the back cover. Koppers Built-Up Roofing Supplemental Specifications A copy of this manual is available upon request Con tact your Koppers representative or the District office serving you listed on the back cover. Koppers Architectural Student Design Competition Each year for a number of years Koppers has sponsored an architectural design competition. The competition is offered on a selective basis to various accredited schools of architecture, nation wide. It is intra-scholastic only, with separate and identical awards being made to the winning student at each participating school. Participation is offered to fourth year or sub-senior students only. The program is designed to be incorporated into the regular fourth year curriculum in which all sub-senior students would be involved. Awards consist of a $1,000 grantfor tuition assistance at each of the several participating colleges and universities. In such cases where tuition costs may be less than $1,000, the balance of this fund is placed at the disposal of the head of the Department of Architecture for use in furthering the educational aims of his department. Additional information and complete details can be obtained by writing Koppers Co. Inc., Architectural Student Design Competition. flat roof design competition for architectural students' 27 SALES OFFICES CHARLOTTE, NORTH CAROLINA 28203 The Builders Building P.O. Box 3186 Tel: 704-375-4427 CHICAGO, ILLINOIS 60603 122 South Michigan Avenue Tel: 312-939-2400 DETROIT, MICHIGAN 48203 301W. Eight Mile Road Tel: 313-366-5200 HOUSTON, TEXAS 77015 P.O. Box 9746 Tel: 713-453-5446 KANSAS CITY, MISSOURI 64U6 Room 5 V.F.W. Building Tel: 816-531-6680 ~ LOS ANGELES, CALIFORNIA 90005 3440 Wilshire Boulevard Tel: 213-388-0676 NEW YORK, NEW YORK 10022 430 Park Avenue Tel: 212-755-2810 PITTSBURGH, PENNSYLVANIA 15219 612 Chatham Center Tel: 412-391-3300 ST. LOUIS, MISSOURI 63101 706 Chestnut Street Tel: 314-241-8096 ST. PAUL, MINNESOTA 55115 1000 Hamline Avenue Tel: 612-646-7801 SAN FRANCISCO, CALIFORNIA 94105 55 New Montgomery Street Tel: 415-986-2660 WASHINGTON, D.C. 20006 1725 K Street N.W. Tel: 202-333-8282 WOODWARD, ALABAMA 35189 (Birmingham) Tel: 205-788-1611 District Offices Advance with Xoppers KOPPERS COMPANY, INC. TAR & CHEMICAL DIVISION Ptttsburfh, Pa. 15219 .1