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I" i 3 ir t i r ii i ri r. BUILT-UP ROOFING SPECIFICATIONS i MANUAL 1966 FOR ARCHITECTS, ENGINEERS & CONTRACTORS T I P JUJL FILE N0.12B CSI. FILENO. 7 KOPPERS Coal Tar built-up roofing Koppera coal tar built-up roods* provide* one of the moet durable roods* membrane* knows. The advantage* are found in the in herent superior characteristics of coal tar pitch, the only timeproves waterproofin* metariel for low-alope roof*. Coal tar pitch has e 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 roods* is its permanent self-healing ability. Alligatoring and hairline 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 fakes 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 assuring 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. INDEX Slope Bond Deck Yeors GENERAL REQUIREMENTS Typo of Surface Nof SP- Page Plies No- No. FLAT DECKS 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 Wood Fiber Poured Concrete, Poured Gypsum Precast Concrete Up to 1' 20 Gravel or Slag Up to 1' 15 Gravel or Slag 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 Gravel or Slag 4 3 4 3 4 3 Precast Gypsum, Poured Gypsum, Gypsum Metal Bound Plank Metal with Insulation 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 Gravel or Slag 5 4 4 3 Promenade Tile over Poured Concrete Up to 1' 10 Promenade Tile 5 Water Cooled over Poured Up to 1' 20 Gravel or Slag Concrete, Poured Gypsum, Up to 1' 15 Gravel or Slag or Precast Concrete Slab 4 3 STEEP DECKS 16 26 30 6 27 7 28 7 S8 78 10 9 11 9 12 10 13 10 17 11 18 11 20 12 23 13 24 13 Aggregate Surface Wood, Poured or Precast Gypsum, Gypsum Metal Bound Plank 2'-3' 2*3* 20 Gravel or Slag 15 Gravel or Slag 5 300-A 4 2500-A Poured and Precast Concrete, and Metal with Insulation 2*-3* 2*.3* 20 Gravel or Slag 15 Gravel or Slag 4 800-A 3 3200-A Mineral Surface Wood 3*-9* 3*-9* 15 Mineral 10 Mineral 3 31-A 2 4-A Poured Concrete or Poured Gypsum 3*-9* 3*-9* 15 Mineral 10 Mineral 3 33-A 2 9-A Precast Gypsum, Gypsum Metal Bound Plank, Precast Concrete 3*-9* 3*-9* 15 Mineral 10 Mineral 3 34-A 2 35-A 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 Concrete, 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 Koppars Supplemental Built-Up Roofing Specifications for bonding and details of Smooth Surfaced Steep Roofing. 14 14 14 15 15 15 15 15 15 FLASHING SPECIFICATIONS 16 INSULATION SPECIFICATIONS--With and without vapor barrier Deck Construction Humidity Conditions Spec. No. Wood, Precast Gypsum, Gypsum Metal Bound Plank Normal High Humidity 200 201 Poured Concrete, Poured Gypsum and Precast Concrete Slabs Normal High Humidity 202 203 Metal High Humidity 204 20 21 21 21 21 22 RE-ROOFING FLASHING DETAILS 2J r For docks or insulations not eovered in th*s* opacifications consult Koppars Suppla- mantal Built-Up Roofing Specifications or your Koppars Representative. (""Hi KOPPERS COMPANY. INC. KOPPERS slag or gravel surfaced roofs 8o Ko , Koppera Slag or Grmvel Surfaced Roof consists of layers of tarred felt cemented with pitch to form a contiiiuoua akin over the entire roof deck. The actual waterproofing acent ia the pitch. The number of layers or "pliee" 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 plies used does not affect the impermeability of the roofing, but a greater number does pro long its life. Either slag or gravel provides a satisfactory surface. GENERAL REQUIREMENTS This manual contains roofing specifications and procedures which are baaed on the many years of Koppera 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 beat 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 pliee of felt must be used. The methods of construction outlined in these specifications must be followed for bonded roofs unless modifications are al lowed by Koppera Company, Inc. The applicable following requirements are part of the de tailed specifications contained in the succeedingpagea For addi tional information, see Koppers Supplemental Specification*. KOPPERS ROOFING BONDS ( onds on Koppera Roofingand Flashings are issued by Koppera ompany, Inc., and its surety on roofs constructed according to loppers specifications and when applied by roofing contractors approved in writing by Koppera Company, Inc. The Koppera bond guarantees that, m accordance with the terras of the bond, Koppera will make repaira to the roof which are necessitated by ordinary wear and tear by the elements to keep that roof in watertight condition. Standard Koppera bonds are available for 10-, 15*. or 20-year terms as described in each individual specification in this minni). A twenty-five (25) year bond is available for all stand ard twenty (20) year specifications when it is specified. Further details are available in Koppera currant price bulletin. Koppera will issue its standard roofing bond for fiat roofing and will bond such steep roofing as required in conjunction with the flat roofing, provided the steep roofing does not exceed 50% of the roofing to be bonded, ana provided all roofing ia con structed in conformance With Koppera specifications. The Koppera 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 on effective instrument when abuse has caused damage to the roofing. The Koppera bond assures that standard proven specifica tions will be followed, quality materials will be used, a Koppera 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 State# sa are covered by its inspection service. (2) Fleshings can be bonded for periods up to but not exceeding the term for which the roofing is bonded. ^DECKS 1 11 decks shall be installed in accordance with the deck manucturar's specifications. They shall be properly graded to drain outlets ana shall be clean, smooth, completely diw, rigid, and free of debris. Any deck defect shall be corrected before appli cation of roofing. In approving any dock 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 maximum anticipated loads, and the selection of the deck material and construction details as related to their ahilirir to contain bitumens. Koppers will not *"" responsibility for bitumen seepage. The placing of conduits, bolt heads, etc., above the roof deck and below the roofing membrane is not recommended. On decks such as wood fiber decks, poured gypsum. poured menbitine decks or fills where insulation is specified, an effective approved vapor barrier should be used. Decks of questionable dryness should be checked prior to roofing application. A pint of the 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 Sured on a representative area of the deck. If the material uns or bubbles, tbs deck is not considered to be satisfactory for roofing. After it has cooled to ambient temperature, the costing should be tested for adhesion. If any portion of it can be easily stripped dean of the deck, application should not be permitted. All poured decks (except standard concrete and lightweight insulating concrete) must have provisions for venting and dry ing from tbs underside. Koppers will not accept insulating fills applied over a vapor barrier, unvented metal decks, poured concrete or any type of substrate which will not permit the fill to vent or dry from the underside. Low sloped tapered edge cants are recommended in conjunc tion with gravel itope at roof perimeters. Low sloped cants are more desirable than excessive sloped cants which cannot he surfaced with gravel and sometimes present problems of felt iiippmt. All projections or openings in the deck shall have been com pleted prior to the application of roofing. TEMPORARY ROOFING A temporary roof should be applied to the deck prior to laying of any insulation or roofing until all danger of damage has been eliminated. Temporary roofing, applied for obvious reasons, should be removed after it has 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. OLD STYLE PITCH 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, 450 to 500 lbe., and in bulk. The softening point of Koppers Old Style Pitch is 140*F155*F by the Cube-in-Water method of test Pitch shall not be heated above 400*F and should not be main tained under heat for sustained periods. Advantages of Coal Tar Pitch for Flat Roofs Two important questions should be asked about any roofing to be applied on flat docks: 1.. Can it resist prolonged contact with water without deteri orating? 2. Dow it have the ability to heal itself automatically? Roofs built with Old Stylo Pitch and Approved Tarred Felt DO resist water and they DO heal thamsalvea. 3 Resistance to Water Today, due to developments is past years, construction method* and roof assembly design have changed and unless a roof it designed to be water cooled, drainage ihould be incorporated wherever poeeible. Thi* will facilitate repair* when necessary, reduce the poeaibility of incuiation becoming saturated and add a degree of protection for building contest*. Prolonged contact with water, earned by poor drainage, low spot* or aettlement of the building, i* a condition almost impos sible to avoid on low sloped root*. Service record* of over 50 years of coal tar pitch roof* with little or no attention prove the resistance of tar to water. Old Style Pitch ia practically insoluble in water, non* of it* constituents having more than a alight water solubility. Koppers coal tar pitch roofing is water proof. The Self-Healing Property Weathering and rapid changes is atmospheric condition* can cause cracks in the top surfaces of some type* of roofing. How ever the vital consideration is whether those crack* are per manent if they do appear. Old Style Pitch has a property tech nically known as "cold flow" and even at ordinary temperature* 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 forms a continuous layer. Old Style Pitch Roots readily conform to slight irregularities in the deck and yet remain waterproof. The Extra-Heavy Top Pouring Additional protection it given a Koppers Roof by the extra top covering of roofing pitch which is poured on (not mopped). NOTE: Charts headed. "For Convenience in Ratimating. Us* Theee Material Quantities" which are shown for each individ ual specification, show total approximate pitch quantities per 100 square feet Broken down, pitch quantities should be ap proximately 25 lbs. per layer with a top pouring of approxi mately 75 lbs. THE AGGREGATE SURFACE Into the extra-heavy top ppuring of pitch, slag or gravel shall be embedded. The slag or gravel acts as an armor coat to pro tect the membrane against hail, driving rain, sleet snow, etc. Slag or gravel also provide* 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 as possible after the application of felts. If a delay is anticipated, particularly in winter weather, a glass coating of pitch is to be applied to protect the felts until the pouring of pitch and slag or gravel is applied. Ideally, all work should be slagged or gravelled in and sill neceeeary flashing installed as work progresses. Koppers Company, Inc., will approve the ns* of slag or gravel meeting A.S.T.M. Specification D1863-64 which lists the fol lowing sieve size requirements: Sieve Size Total Pasting, Percent v,"......................................................... ioo ............................................................. 90-100 %*............................................................. 40-70 No. 4........................................................ 0-15 No. 8........................................................ 0- 5 In addition to sieve analysis requirements. A.S.T.M. D186364 stipulates the following physical requirements: Moisture, maximum, percent Crushed stone and gravel................................ 0.5 Crushed roofing slag....................................... 5.0 Unit weight (loose), mmimiim, lb. per cu. ft........ 60 Dust, maximum, per cent.................................... 0.6 Hardness, maximum percentage passing a No. 6 (3.36 mm) sieve............................................... 20 A.S.T.M. Specification D1863-64 covers aggregates specified both for use m road construction and built-up roofing and should be commercially available throughout the country. 4 WOOD NAILING STRIPS All non-nailahl* decks require wood nailing strips at eaves, edges, walls, roof openings, etc., for proper securing of metal 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. Roofing felts for all decks having a slope of one (1) inch per foot or more must be back-nailed and therefore, non-nailaole decks must be furnished with wood nailers. CAULKING AND TAPING Whether joint* of various precast deck materials are grouted or not, consideration should be given by the architect to caulk ing and taping of all joints. The application of flashing cement and a felt strip approximately 6" wide will minimiTM the dele terious effects on the roofing membrane of movement, moisture transmission through an open 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 stoppings and layers of fslt over the 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 in the manner hereinafter de scribed. The finished roof is to consist of the number of plies and type of surfacing aa specified under the proper subhead in the specifications. Apply the roofing so that the direction of the flow of water is over and not against lap*. Broom or press all plies of felt into the hot pitch and lay without wrinkles, buckle* or kinks, so that the finished roof is free from pockets or blisters. Each solid mopping shall completely cover the area to which it is applied. Overlap ends of all connecting pliee of felt not lees than 10 inches. End-stripping or taping of theee laps ia not permitted. The widths of felt are laid shingle fashion, not only becaut this method produces a stronger membrane but because it alt makes it possible to construct a roof of any desired number or 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 Details in this manual. When beginning a membrane roofing installation, appropri ate width starting strips of felt shall be used at the starting point to achieve the specification ply build up at that point, so that successive plies laid shingle fashion will producethe ply require ments. In all cases the plies of felt must be laid shingle fashion. 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 aa may be specifically provided for in our printed speci fications. Koppers requires that all felts be backnailed when the slope of the deck is one (1) inch per foot or more. MATERIALS PROTECTION Roll roofing materials and insulation ihould be stored indoors if poeeible. otherwise it shall be protected by raised platforms and covered with suitable weatherproof protective coverings such as tarpaulins, plastic shseting, etc. KOPPERS NO. 15 TARRED FELT Koppers Tarred Felts are sold in standard size rolls, 36 inches wide and containing 432 square feet, except when otherwise specified. Koppers Approved Tarred Felt, the highest grade of roofing and waterproofing felt and the grade used in Koppers Bonded Roofs, has a minimum weight of 13-lbs. per 100 squar feet or an approximate minimum weight of 56 lb*, per roll. Koppers Approved Tarred Felt is manufactured to meet the following specifications: Federal Specification HH-R-595 Type I, Class 1 A.S.T.M. D-227 Underwriters' Laboratories, Inc. KOPPERS STEEP ROOFS pads. Pads should be approximately 72* x 36' x V4" minimum thirlm-- of a homogeneous core of bitumen, plasticizers and Koppere slag or gravel aurfaeadataaproofa for slopee from two (2) inchn to three (3) inchee per foot are constructed of as- alt saturated felts set in steep asphalt A top costing of steep phalt, into which either slat or gTCvel is embedded, completes >is type construction. Koppere mineral surfaced steep roofs for slopes from three (3) i inches to nine (9) inches per foot are constructed of Koppers i. Asphalt Felts set in Koppers Steep Asphalt The surface ma terial is composed of Koppers Selvace Edge Mineral Surface r* I i roofing, a heavy asphalt saturated felt thirty-six (36) inchee in width, of which nineteen (19) 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 preceding sheet nineteen (19) inches, thereby presenting to the inert fillen bonded under heat and pressure between two sat urated and coated sheet* with the bottom side plein 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 Koppen representative concerning the protection of the roof system which is proposed. NAILS & FASTENERS [ elements a continuous tough granule surface. Koppers smooth surfaced steep roofs for slopes from two (2) inches to six (6) inchee per foot are constructed of perforated asbestos felts thoroughly impregnated with specially refined i.r asphalt firmly embedded in Koppers Steep Asphalt. Koppers Perforated Asphalt Saturated Asbestos Felts produce a long- lasting weather-resistant roof. 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 length* and type of nails or fastener* 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.) NOTE: For detailed specifications regarding tmooth turfaced [ steep asbetto* roof* refer to Koppers Supplemental Built-Up Roofing Manuel. The following recommendations will serve ss a guide for the installation of roofing for the decks as listed: Metal Decks. For securing felts to insulation use soft nosed roofing nails % inch longer than the thickness of the insulation, [ ROOFING AND FLASHING BRIEF SPECIFICATION designed to clinch or hook on the undersideof 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 Roofing and flaahing hell be installed by a roofing contractor nailable decks. [ approved by Koppers Company, Inc., and he shall apply the roofing and flashing in strict accordance with Koppers Specifi cations and requirements for 10, 15 or 20 year bonds, and subject to Koppers inspection and approval. Upon completion [ of the work, the contractor is to furnish Koppers Roofing and Flashing Bond to the owner. Poured Qypsunt and Poured Lightweight Aggregate Docfca (Whan Not Thoroughly Dry). Use Simplex Gypsum Roof Deck Nail or Screw-Tite Squarehed Cap Nail or Capped E/S Nail or square cut through tiy* fttiiV Precast Nailable Lightweight Docks (Gypsum Hank and Dry Poured Qypaum). Us* SimplexTube-Lok Nail or square cut steel I nail with head (Wheeling LaBells or equal). [ UNDERWRITERS' LABORATORIES, INC. Roofing constructed according to Koppers specifications in most instances carries a Class A rating by Underwriters' Lab oratories, Inc. Preformed Composition Docks. 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. [ COLD STORAGE & FREEZER BUILDINGS [ Koppers Company will not bond its roofing over these struc tures if insulation and/or vapor barrier is installed over the 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 (Refer to Douglas Fir Plywood Association Laboratory Bulletin 61-B deck and unlew there is an adequately ventilated air space dated March 20,1961.) between the insulated refrigerated area and the underside of [ the roof deck. See Koppers Supplemental Specifications for further infor mation. Shredded Wood Fiber Decks. For nailing applications use Sim plex Tube-Lok NaiL Refer to page 7 of this manual NOTE: Nailing frequency is recommended in the individual application specifications which fallow in this manna! Should the manner of attachment as recommended above WALKWAYS conflict with the specifications of the naiL insulation or deck manufacturer, these manufacturers' specifications should be Where periodic foot traffic patterns such as paths to or around equipment and other milaT situations where the roofing may be subjected to anticipated unusual treatment, the roofing membrane should be protected. Walkway systems should never 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- be placed directly on a slag or gravel surface. Areas of the roofing membrane which are to act as the hearing surface for a walkway should be given additional protection. Although there are a number of methods which can be employed. Koppers recommends one of the following: For reference: E/S Products. Inc.. New Rochelle. N. Y. Independent Nail Corp., Bridgewater, Mass. Simplex Nail A Manufacturing Corp.. Americus, Ga. 1. Treated Wooden Walkways. Over the designated walkway Wheeling Steel Corp., Wheeling, W. Va. r areas and directly on the existing coal tar pitch and tarred felt membrane (prior to aggregate surfacing), lay two additional plies of tarred felt in solid stoppings of pitch. Treated wooden sleeper* should then be set on the reinforced - 'res in a solid pouring of coal tar pitch followed by aggregate - rfacing embedded in the pouring over the entire surface up h. i all tide* and ends of sleepers. Treated wood planking bridg ing the sleepers will provide the walkway surface. NOTE: This roofing specification manual contains the latest and best available information as derived from Koppers long experi ence in the roofing industry. The design criteria ana details contained herein have been compiled and are offered as a guide for consideration to assist the architect, owner and roofer in an attempt to provide the beet roof possible for long, trouble-free service. Responsibility, however,, for design of any roofing system, remains with the architect or engineer ana building r 2. Traffic Pads. Over the areas of the roofing membrane to owner. The contents of this manual axe subject to change at ] be protected prior to the top pouring and aggregate surfacing, the discretion of Koppers Company as' future developments L lay in a solid application of coal tar pitch approved protective and experience are achieved. v 5 deck construction _ WOOD PLANK / SLOPE Up to 2 in. per ft. SURFACE Aggregate PLYWOOD Spec. No. 1-5 ply--20 year Spec. No. 2--4 ply-15 year Spec. No. 30--3 ply--10 year For convenience in estimating use these material quantities: MATERIALS per 100 Sq. Ft Sheathing Paper Tarred Felt Coal Tar Pitch Gravel OR Slag Spec. No. 1 5 lbs. 75 lbs. 150 lbs. 400 lbs OR 300 lbs. Spec. No. 2 Spec. No. 30 5 lbs. 5 lbs. 60 lbs. 60 lbs. 125 lbs. 125 lbs. 400 lbs. 400 lbs. OR OR 300 lbs. 300 lbs. n 1 Hot bitumen should never be applied directly to a wood deck. Sandwiched between the heat from above and the heat from below, inch material finds its way through the boards into the building. Good practice demands the caihioaiag and blotting effect of a layer of sheathing paper followed by layers of dry felL 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, toague-andgrooved lumber should be used. SPECIFICATIONS Select clauses at required. Optional clauses in italic. Condition of Surface to Receive Roofing Do not apply roofing to any surface which is not reasonably smooth ana 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 Hoppers Supplemental Specification* for addi tional information for plywood deck construction. Application of Roofing Materials 1st Lay one ply of roain died or other approved sheathing paper weighing not leas than five (5) lbs. per 100 sauare 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 turface of the sheathing paper, two (2) dry pliet of Koppert Approved Tarred Felt. Lap putt nineteen (19) inchet. Natl on twelve inch centert, 2" in from edge lap with naile thru fiat tin ditct or approved nails with integral caps. Nail thanks are to be of required length for maximum withholding power. 2nd. Spec. No. 30 Apply over the sheathing paper, one (1) dry ply of Koppert 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 thanks 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. 6 4th. Spec. No. 1 Apply three (3) plies of Koppert Approved Tarred Felt, lapptng plies twenty-four and two-thirds (24-2/3) inches. 4th. Spec. No. 2 Spec. No. 30 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 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 leas 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. 200 on page 21. 2. Insulation with vapor barrier--See Specification No. 201 on page 21. General Requiremeata on pages 3 through 5 and Detailed Specifications oa pages 2* through 26 are a part of these spec ifications and must be adhered to where applicable. K IS ? deck construction WOOD FIBER SLOPE Up to 1 in. per ft. ^JRFACE Aggregate Spec. No. 27-4 ply--20 year Spec. No. 28-3 ply-15 year Spec. No. 28-may be bonded for 10 years For convenience in estimating um these material quantities: 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 must be installed in strict hccordanee with the particular deck manufacturer's recommendations for installa tion. Deck material must be protected during shipment. Job site storage and prior to roofing application. No planks which hare become structurally weakened due to moisture, fractures or utilated edges may be used. All joints must be level and eferably grouted full and lerel with plank surfaces as recom mended by the deck manufacturer. All planks must be well anchored to supporting members to resist morement in a fash ion recommended by the deck manufacturer. Any planks which bow or defied or do not seat securely must be replaced. Re sponsibility for the selection of a particular type of wood fiber deck, its installation, prorision 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 clause* as required. Optional clause* in italic. Condition of Surface to Receive 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 looee. spongy or separating. Deck must be clean of debris, cuttings, dirt ana other foreign matter. All end and side joints of deck planks, whether grouted or not. must be caulked and stripped. Apply a sufficient quantity of trowel-grade asphaltic plastic cement to continuously seal all joints. A bead of the cement shall protrude above the top of the joint but shall not be feathered out on the deck surface. All joints shall then be covered with a 6' wide strip of No. IS As phalt Saturated Felt centered over the joint 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 'at Install one ply of Hoppers coated base sheet with minimum it (4) inch side and six (6) inch end laps in a solid mopping . 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 (1) ply of rosin-sued sheathing paper lapped two (2) inches minimum and nail to hold in place. Then lay on* (1) ply of Koppers coated base sheet lapped not less than four (4) inches and nail along center of lap not lets than nine (9) inches on center and thru the center of each sheet on eighteen (18) inch center* with mechanical clinching type fasteners as recommended by the Structural Wood Fioer Products Association or designer such as Simplex Tube-Lok nails. For bonded roofing applications, fasteners, other than TubeLok nails, must be acceptable to Koppers. 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. Spec. No. 27 Apply three (3) plies of Koppers Approved Tarred Felt, lap ping plies twenty-four and two-thirds (24-2/3) inches. 3rd. Spec. No. 28 Apply two (2) plies of Koppers Approved Tarred Felt, lapping plies nineteen (19) inches. Mop solidly between plies with Old Style Pitch 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 1. Insulation without vapor barrier. Install insulation in steep asphalt in conformance with 1st paragraph. Nailable insulation not exceeding one (1) inch thick may be installed using 1% inch Simplex Tube-Lok nails at all four comers and at center of board. Installation of roofing over insulation hll be as per specification outlined above with baae sheet mopped solidly to the insulation. Z Insulation with vapor barrior. 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 place shell 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 Requirements 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. 7 deck construction POURED CONCRETE POURED GYPSUM (thoroughly dry) SLOPE Up to 2 in. per ft. SURFACE Aggregate Spec. No. 5--4 ply-20 year Spec. No. 7--3 ply--15 year For convenience In estimating uts them material quantities: 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. Poorad concrete decks sometimes esnse trosble beesam ths built-up roofing is laid before the deck to thoroughly dry-- inch u might happen when the general contractor ia anxious to get the building under cover and eo arges the roofing con* tractor to begin work afaortly after the deck ha* been poured. When thia happen* the remit ia a bllatared and buckled mem brane or, Just aa action*, inanlation curia and makes an unsatis factory job.-The roofing contractor, bached by the architect, should insiat on a thoroughly dry deck before beginning work. He ihonld alao eee to it that the deck is free of loom sand, froxen aeale and other foreign matter. Projections should be removed, low points filled with cement grant or other mutable material, and all cracks pointed up. A poured gypsum deck, especially, should be inspected for moiature content, the characteristic of thia material being such that even after popring it qnickly takes on a dry appear ance. The dryness, however, actually extends only a little distance below the surface, the large maas of the gypenm being very moist. Refer to General Requirements on page 3, paragraph S under Decks. SPECIFICATIONS Select clauses as required. Optional clauses in italic. Condition of Surface 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 application of the roofing, thoroughly clean the surface of dust and loom materials. Roof deck hfl be properly graded to outlets. Decks with inclines of one (I) inch per foot or more hH permit nailing, or treated wooden nailing (tripe must be in stalled prior to roofing. Nailing strip* 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 Routed Concrete: Mop deck completely with Old Style Pitch. (B) Oter Poured Gypsum: If poured gypsum is thorough dry, strip-mop the deck with approximately 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 yean or Specification No. 13 for 15 yean aa listed on page 10 of this manual. Applicable portions of Kopperi Supplemental Speci fication "Food Establishments" apply. 2nd. Spec. No. S Apply over the entire surface, four (4) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-seven and one-half (272/t) inches. Mop solidly between each 27Vi 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 to 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 spacing* 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 navel or three hundred (300) pounds of slag for each one hundred (100) square feet. Insulation and Vapor Barrier 1. Insulation without vapor barrier--Sm Specification No. 20 on page 21. 2. Insulation with vapor barrier--See Specification No. 201 foi poured gypsum or No. 203 for poured concrete on page 21. General Reqairements on pages 3 through 5 and Detailed Spec ifications on pares 20 through 20 are a part of thia specification and most be adhered to where applicable. deck construction PRECAST CONCRETE SLOPE Up to 2 in. per ft. SURFACE Aggregate Spec. No. 10--4 ply--20 year Spec. No. 11--3 ply--15 year For convenience In estimating use these material quantities: MATERIALS per 100 Sq. Ft Coal Tar Pitch Tarred Felt Gravel OR Slag Spec. No. 10 165 lbs. 60 lbs. 400 lbs. OR 300 lbs. Spec. No. 11 140 lbs. 45 lbs. 400 lbs. OR 300 lbs. recast concrete slab decks should reeelre the same careful scrutiny recommended for poured concrete or gypsum decks, although as a role the poaaibility 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 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 areas, the use of cinder aggre* 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 asphaltic plastic cement. Sides and ends of slabs should be square. Slabs must rest firmly and evenly on supporting members. SPECIFICATIONS Select clause* a* required. Optional clauae* in italic. Condition of Surface 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 the membrane. Surfaces must be dry. Immed iately before the application of the roofing, thoroughly clean the surface of dust and loose materiel. All joints between precast concrete slabs whether pouted or not shall be caulked with plastic cement which shall be applied so that the top surface is level with the dock. (Felt strips four (4) to six (6) inches wide may be set in the trowelling of cement 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 inclines of one (1) inch per foot or more shall ;rmit nailing, or treated nailing strips must be set in the deck .ush 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. Application of Roofing Materials 1st Each slab shall be spot or strip mopped with Old Style Pitch, keeping pitch mopping! back at least four (4) inches from all edges of each slab joint 2nd. Spec. No. 10 Apply over the entire surface four (4) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-seven ana one-half (TJlA) inches. Mop solidly between each 27(4 inch lap with Old Style Pitch so that in no place shall felt touch felt. 2nd. Spoc.No.ll Apply over the entire surface three (3) plies of Koppers Ap proved Tarred Felt, lapping plies twenty-four and two-thirds (24-2J3) inches. Mop solidly between the 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 stripe shall be installed and each sheet nailed along back or upper edge at spacing* 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 lese 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. 202 on page 21. 2. Insulation with vapor barrier--See Specification No. 203 on page 21. General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 20 through 26 are a part of this specifica tion and moat be adhered to whore applicable. 9 deck construction: PRECAST GYPSUM POURED GYPSUM (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 For convenience in estimating uaa these malarial quantities: MATERIALS per 100 Sq. Ft Coal Tar Pitch Tarred Felt Gravel OR Slag Spec. No. 12 150 lbs. 75 lbs. 400 lbs. OR 300 lbs. Spec. No. 13 125 lbs. 60 lbs. 400 lbs. OR 300 lbs. Tha fame recommendation* applying to precast conerat* slaba 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 slaba are precast, the possibility of a high moisture content being present la more remote than in the poured gypsum deck. SPECIFICATIONS Select clause* as required. Optional clauses in italic. Condition of Surface to Receive Roofing Do not apply built-up roofing to any surface which is not reasonably smooth and free from projections or hole* which might cause rupture of the membrane. Surface* must be dry. Immediately before the application of the roofing, thoroughly clean the surface of dust and loos* material. All joints between precast gypsum slabs shall be properly grouted; grouting not required on gypsum metal bound plank. Roof deck thsQl be properly graded to outlet*. 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 16 veers as listed on page 8 of this manual Applicable portions of Koppers supplemental specification "Food Establishments" apply. Alternate: Apply over entire surface one (1) ply of Koppers coated base sheet, lapping each sheet four (4) inches over preceding sheet and nailing at lap no leu than nine (9) inches, and down center of each sheet on eighteen (IS) inch centers. 3rd. Spec. No. 12 Apply three (3) plies of Koppers Approved Tarred Felt, lap ping plies twenty-four and two-thirds (24-2/3) inches. Where slope of deck is one (l) inch per foot or more, nail each sheet of felt six (S) inches from the back edge on twenty-four (24) inch centers. All laps shall be mopped with pitch the full twenty-four and two-thirds (24-2/3) inches, so that in no place 10 shall felt touch felt. 3rd. Spec. No. 13 Apply two (2) plies of Koppers Approved Tarred Felt, lapping plies nineteen (19) inches. Where slope of deck is one (1) inch per foot or more, nail each sheet six (6) inches from the back edge on twenty-four (24) inch centers. All laps shall be mopped with pitch the full nineteen (19) inches 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) pound* of slag for each one hundred (100) square feet Insulation and Vapor Barrier Precast 1. Insulation without vapor barrier-See Specification No. 200 on page 21. 2. Insulation with vapor barrier--See Specification No. 201 on page 21. Pouted 1. Insulation without vapor barrier--See Specification No. 202 on page 21. 2. insulation with vapor barrier--See Specification No. 201 o page 21. General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 20 through 28 are a part of this specification and must be adhered to where applicable. r deck construction: METAL DECKS (Insulation Required) 8o Ko ^LOPE Up to 2 in. per ft. URFACE Aggregate 43wn< er Uf * pigwg *4 cmI Ur pMt AHwiiati Uyen ef cm! Ur ptcfc a4 Und fdt if (til Ur p*tk IwewleK-- wbaddid mi MefcJdedi Detail of Specification No. 17 Spec. No. 17-4 ply-20 year Spec. No. 18-3 ply--15 year For convenience in estimating use these material quantities: MATERIALS par 100 Sq. PL Steep Asphalt Spec. No. 17 12-15 lbs. Spec. No. 18 12-15 lbs. Tarred Fait Coal Tar Pitch 60 lbs. 175 tbs. 45 lbs. 14.5 lbs. Grave! 300 lbs. OR 400 lbs. 300 lbs. OR 400 lbs. `OepenOs on width of rib and Intulation used. Whan mora than one layor of insulation ia installad and asphalt Is moopod bo* twsan layers. add 29 pounds par aouars approximataly for mopping batwaan layars. It is absolutely nacasssry to install insolation on a metal deck before the boilt-ap roofing ia applied in order to obtain a Hoppers Roofing Bond. A metal deck most bs clean, smooth, and properly anchored _ .to the steel purlins and all joints correctly lapped and fastened. Type of metal deck, Ante opening and various other factors etaraine the type and thickness of insolation required. Con* salt yonr Hoppers representative for recommendations. Metal roof decks shall be designed so that they will not have a deflection exceeding 1/240 of dear span under all types of roof traffic conditions including msehsnical equipment need for roof application. SPECIFICATIONS Select clauses at required. Optional clauses in italic. Condition of Surface to Receive Roofing Metal roof decks shall be dry, dean and free from ruat or oily substances. Immediately before the application of the instilstion. thoroughly dean the surface of rust and looee material. Roof deck snail be properly graded to outlets. Application of Intulation and Roofing Metadata let a. Insulation shell be dry and of an approved type with the thickness dependent upon the width of the flute opening* of the metal deck. b. No more ineuietion shall be installed at any one time than can be protected by pitch and fait in case of suddtn weather changes. e. All abutting edge* of insulation shell be fitted cloedy together but shell not be forced into piece. d. Install insulation in steep asphalt applied to deck at rata of 12 to 19 lbs. per 100 sq. ft and place insulation while steep asphalt is still molten to provide good ad hesion. *. 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 end the canter of each sheet If two layers of insulation are specified, top layer joints shell not coincide with joints of bottom layer. Fasteners shell be driven after the top layer of insula tion is installed f. For additional information reftr to Koppaxs Supple mental Specifications for metal decks and 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 thair currant data. 2nd. Mop a uniform coating of Old Stylo Pitch over the insula tion preceding the application of roofing membrane. 3rd. Spec. No. 17 Apply over the entire surface, (our (4) plies of Koppert Ap proved Tarred Pelf, lapping pass twenty-seven and one-half (27*/i) inch**. Mop solidly between each 27ft inch lap with Old Style Pitch $o that in no place thall felt touch felt 3rd. Spec. No. 1* -= Apply over the entire eurface, three (3) pliet of Koppert Ap proved Tarred Felt, lapping pile* twenty-four and two-thirds (24-2/3) inches. Mop solidly between each 24-2/3 inch lap with Old Style Pitch to that in no place shall felt touch felt. Altamata: 2nd and 3rd. As a substitute for the first ply of tarred felt apply one ply of Koppert coated bam 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 bam sheet three (3) plies of tarrsd felt, lapping puss twenty-four and two-thirde (24-2/3) inches and mopping solidly betwten each ply with Old Style Pitch. Spec. No. 18 Apply over the bam sheet two (2) plies of tarred felt, lapping pfies nineteen (19) inches and mopping solidly between tack ply with Old Style Pitch. If elope of roof u one (1) inch per foot or more, each ply of felt shall oe nailed along the beck or upper edge on twenty-four (24) inch center*. If bee* sheet alternate ia 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 approximataly seventy-five (75) pounds of Old Stvle Pitch into which, while hot, embed not lees than four hundred (400) pounds of gravel or three hundred (300) pounds of slag for each ona hundred (100) square feet Insulation with Vapor lartior See Specification No. 204 on page 22. General Requirements oa pages 3 throagh 5 sad Detailed Spec ifications on pages 20 throogn 21 ere a part of this specification end most be adhered to where applicable. n surface: PROMENADE TILE SURFACING SLOPE Up to 1 in. per ft. Deck Construction Poured Concrete ) TfeSrtiaCtflMrtiMittr Om Uyw W tamd Wt lipud 2* < ml Uf prtdi Tw* ieywt tarrW ftH lapvaS It* Mppn af ml Ur ptd< TwalayaraaltairwIfattUeaW If lq Mppo| af ml Ur pM Jiml m libM Spec. No. 20--5 ply--10 year Um Flashing Specification No. 100 for Bonded Roof* For convenience in estimating usa these matarial quanttttas: MATERIALS par 100 Sq. Ft Spec. No. 20 Coal Tar PRcft 125 lbs. Tarred Fait 75 lbs. Although it is practical to set prmaeaade tilas in Human or mastic, it is not recommended if tile is to be exposed to long periods of sunlight sines hast will eaass ths material to come up throagh the Jolata to the surface. This is not only expensive bat dificalt to remedy. In order to Insure against damage due to expansion and contraction, expansion Joints ahonld be pro vided for ail sarfaeee exceeding 4M square feet. After tile has been laid all trafle ahonld be barred for at least 24 hoars, after which the tile ahonld be thoroughly scoured and flashed with wster. When any other traflk surfacing materials art applied to s roof, the roofing is considered waterproofing. A bond is not available for such construction. Nats 1. Roofing with promenade tile surfacing is only bondnble when applied over poured concrete roof decks. 2. Consult Koppers on Waterproofing and Dampproof ing for other membrane systems where waterproofing is re quired beneath other types of waaring surface*. SPECIFICATIONS Condition of Surface to Racahre 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 and loose material. Roof deck shall be properly graded to outlets. Application of Waterproofing Matarial 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 spplication of additional plies with Old Style Pitch. 4th. Apply over the entire surface two (2) plies of Koppers Approved Tarred Felt, lapping pUea 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 the preceding sheet. Only part of the membrane surface shall be covered with the last ply of fait at one time, the tile then being laid over that portion at once. 6th. The vitrified clay tile should be set in not leae 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-sixteentha (3/16) inch to one-fourth (1/4) inch joints. Expansion joints three-quarters (3/4) inch wide filled with plastic mix ture, which must be approved by the architect, snail be pro vided between the tile and ail 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 wall*, skylights, curbs, etc. Nota a. If insulation it 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 glased 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 and approvid. 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 and replacing of tile in order to locate leaks through the waterproofing. Insulation and Vapor Barrier 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 Reqaireneats on pages 3 throagh 5 and Detailed Spec ifications on pages 20 throagh 26 are s part of this specification and must be adhered to where applicable. deck construction: Poured Concrete Poured Gypsum Precast Concrete WATER COOLED ROOFS SLOPE * Up to 1 in. per ft. Surface Double Aggregate (with double pour) fa Ko Spec. No. 23--4 ply-20 year Spec. No. 24--3 ply-15 year Usa flashing specification No. 110 for bonded roofs For convenience in estimating use these materiel quantities: MATERIALS per 100 Sq. Ft Coal Tar Pitch Tarred Felt Gravel OR Slsfr,. Spec. No. 23 260 lbs. 60 lb*. 700 lbs. OR 500 lbs. Spec. No. 24 235 lbs. 45 lbs. 700 lbs. OR 500 lbs. Koppers will only bond Water Cooled Boofa when applied over Poured Concrete, Gypsum or Precsst Concrete Decks. A Kop pers Roof Bond will not be issued over Metal, Wood, Shredded wood Fiber, or similar dseka if they are designed for s water cooling system. Water cooling of a built-up roof may be accomplished by ither a spray or ponding system. Since BTC dissipation is iirectly related to evaporation, a light spray of watsr has proven to be the better method to accomplish cooUnr. If e quantity of water is permitted to pond so as to cover the slag or gravel completely, considerably less cooling results because of the lesser eras exposed for evaporation. Over 94% ofthe host ordinarily entering through the roof can bo excluded by the use 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 closed down and the roof drained prior to cold weather. Neither the roofing nor the strnetnre will withstand the expansion caossd by ics formations. The water cooled roof may bo used alone or fat conjunction with air conditioning equipment. When it in an adjunct of an air conditioning system, less refrigeration will bo reqaired for cooling within the building. Water required for air conditioning may be piped from the condenser to the roof for aae in the roof cooling syitem. If water should be expensive or scares, it ahould be noted that it la possible and practical to have it recycled from the roof to the air conditioning aqsdpment with proper screening. SPECIFICATIONS Select clautet at rtquired. 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 ire# from projections and holes which might cause rupture of the membrane. Surfaces must be drv. Immediately before the application of the roofing, thoroughly lean the surface of dust and looee 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 pliet twenty-teven and one-half (TTtA) inchet. Mop tolidly between each 27*6 inch lap with Old Style Pitch to that in no place thall felt touch felt. 2nd. Spec. No. 24 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 each (24-2/3) inch lap with Old Style Pitch to that in no place thall felt touch felt. All frit shell be turned up not lees than four (4) inches at vertical surfaces. 3rd. Pour over tbs entire surface of the roofing membrane uniform coating of approximately seventy-fire (75) pounds of Old Style Pitch, into which, while hot embed not leas than four hundred (400) pounds of dean dry gravel or three hundred (300) pound* of ring 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 tbs 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 feat The entire surface shall than be thoroughly broomed free from all loos# naval or slag. It is advissdd* to roll the finiehed surface with a light roller so that aggregate it thoroughly embedded. Note a. At points where water pressure from the spray may be exces sive, the roof surface should bo protected with treated board platforms or other suitable construction to break the force of the water. Thaee 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 compraaeive strength and of s eestled oaiintee structure tuch as Foamgla*. c. At all points where roofing membrane meets a vertical sur face, Koppers Flashing Specification No. 110, listed on page 18 must ns applied. General Requirements oa page* 3 through fi and Detailed Spec ifications oa pages 2t through 2fi are s part of this specification and must be adhered te where applicable. 13 STEEP ROOFS SLOPE 2 in. minimum--3 in. maximum SURFACE Aggregate Spec. No. 300A-5 ply-20 year See paragraphs A-l, B-l, C-l & D Spec. No. 2500A--4 ply--15 year See paragraphs A-l, B-l, C-2 & D deck construction: WOOD, PRECAST or POURED GYPSUM DECKS Spec. No. 800A--4 ply-20 year See paragraphs A-2, B-2, C-3 & O Spec. No. 3200A--3 ply--15 year See paragraphs A-2, B-2, C-4 & D PRECAST or POURED CONCRETE and METAL DECKS tsumatmg viuanutin MATERIALS Koppan Asphalt Primer (except on metal) Koppera No. 15 Asphalt Felt Koppera Steep Asphalt Roofing Graval or Roofing Slag Spec. No. 300A (20 Year) Spec. No. 2500A (15 Year) 75 lbs. 125 lbs. 400 lbs. 300 lbs. 60lba. 100 lbs. 400 lbs. 300 Iba. Spec. NO.B00A (20 Year) 1 gal. 60 lbs. 150 lbs. 400 lbs. 300 lbs. Spec. No. 3200A (15 Year) 1 gal. 45 lbs. 125 lbs. 400 lbs. 300 lbs. SPECIFICATIONS Condition of Surface to Receive Roofing FOR WOOD DECKS: Same as described under Spec. No. X. FOR POUREORND PRECAST GYPSUM: Same as describe***!* Spec. No. 12. FOR POURED AND PRECAST CONCRETE: Same as 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) inches 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 comer and at the center 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 Material* 1st A-l (Spec. No. 300A and Spec. No. 2800A) Over the entire surface lay two (2) pliea of Koppera No. 15 Asphalt Felt. Lap each sheet nineteen (19) inches over preceding sheet Nail in place. A-2 (Spec. No. 900A and Spec. No. 3200A) Over Poured Concrete: Coat entire surface with Koppert 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. 2S00A) Mop entire sur face with Koppera Steep Asphalt into which, while hot shall be applied the felts. ,, S-2 (Spec No. SOOA and Spec No. 3200A) Over Poured Concrete: Mem deck completely with Koppen Steep Asphalt Over Precast Concrete: Mop deck with Koppera Steep Asphalt holding bock two (2) inches from all joints. Over Metal Decks: Mop insulation completely with Koppen Steep Asphalt 3rd C-l (Spec No. 300A) Over the entire surface lay three (3) Plies of Koppen 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 Koppen Steep Asphalt and nail through fiat tin discs two (2) inrh-- from the upper edge on nine (9) inch centers. .. 6-2 (Spec No. 2500A) Over the entire surface lay two (2) plies of Koppen No. 15 Asphalt Felt lapping each sheet nine14 teen (19) inches over the preceding sheet Mop the full width undef each ply with Koppen Steep Asphalt and nail through fiat 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 Koppen 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 Koppen Steep Asphalt and nail through flat tin discs on nine (9) inch centers. On precast concrete decks the fint mopping is to be held back two (2) inches from all joints. C-4 (Spec No. 3200A) Over the entire surface lay three (3) plies of Koppen No. 15 Asphalt Felt, lapping each sheet twenty-four and two-thirds (24-2/3) inches over the preceding sheet. Mop the fpll width solid under each sheet with Koppera Steep Asphalt And nail through flat tin discs on nine (9) inch center. On precast concrete decks the fint mopping is to be held back two (2) inches from all joints. 4th D Over the entire surface apply a uniform coating of Koppen 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 Koppen Steep Asphalt shall not be heated above 475*F and shall not be applied to the roof at a temperature of less 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 witn the flat roof. NOTE: Koppen Company, Inc., will issue roofing bonds when roofing is applied according to Specifications Noe. 300A, SOOA. 2500A, and 3200A, in accordance with General Requirement General Requirements on pages 3 through 5 and Detailed Spec ifications on pages 2* through 2* are a part of this specification and must be adhered to where applicable. STEEP ROOFS SLOPE 3 in. minimum--9 in. maximum SURFACE Mineral deck construction: K Spec. No. 31A-15 year See paragraphs A-l, B-l, C . Spec. No. 4A-10 year See paragraphs B-2 4C Spec. No. 33A-15 year Sea 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 & C Spec. No. 35A-10year See paragraphs B-2 & C Estimating Quantities per 100 sq. ft MATERIALS Koppers Asphalt Primer Red Rosin Shssthing Koppers Steep Asphalt Koppars No. 15 Asphalt Felt Koppers Selvage-Edgs 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) Spec. No. 33-A (15 year) lgal. 60 lbs. 120 lbs. 30 lbs. 30 lbs. 110 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. Condition of Surface to Receive Roofing Materials ' <OOD DECKS: Same as described under Spec. Noe. 1. 2 and 30. .OURED CONCRETE AND POURED GYPSUM: Same as described under Spec. Nos. 5 and 7. PRECAST CONCRETE: Same as described under Spec. Noe. 10 and 11. PRECAST GYPSUM AND GYPSUM METAL ROUND PUNKS: Same as described under Spec. Noe. 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. Then: (a) Over Poured Concrete: Mop deck completely with Koppers Steep Asphalt (b) Over Poured Gypsum: Strip mop the deck with six (6) inch wide moppmgs of Koppers Steep Asphalt B. Application of Asphalt Felts B-l (Spec. Nos. 31-A, 33-A and 34-A) Apply, at right anglea 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 (1)4) inch barbed roofing nails through flat tin discs (or with staples for gypsum decks). Mop solidly between plies with Koppers Steep Asphalt B-2 (Space. No*. 4-A and 35-A) Apply at right angles to the incline over the entire surface, one (1) ply of Koppers No. 30 Asphalt Fait lapping ply four (4) inches. Nail each ply edge on eighteen (18) inch centers with one and one-half (1%) inch x-Harbed roofing nails through flat tin discs (or with staples for /psum decks). v-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 (l8) inch centers. When nailing strips are used, the felt shall be secured with three (3) one (1) inch barbed roofing nails through flat 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 fiat 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. When nailing strips are installed, sheets shall be nailed along the selvage edge with three (3) inch nails driven through .fiat tin discs, spaced five (6) 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 stripe not exceeding twenty (20) feet in length prior to using, and is to be stacked flat for a sufficient time to permit these 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 fiat surface is to be carried up the inchned surface not less than twenty-four (24) inches before steep roofing is applied. Appli cation of steep roofing shall start at the .point of junction with the flat roof. General Requirements on pages 3 through 5 and Detailed Specifications on pages 20 through 26 sre a part of these spec ifications and must be adhered to where applicable. KOPPERS FLASHING SPECIFICATIONS AT25?**Spactflcatiaa Number 107 6, 7,8 106 6.7.8 110 1. 2, 6. 7 eei t~ 108 3.6.7 101 4,6. 7.6 100 5,6.7 Metal Cap Composition Base Mineral Surface Metal Cap Competition Base Mineral Surface Metal Cap AffrtftPt fllff Tar Coated Surface Metal Cap Reinforced Aspaatos Baaa Asphalt Coated Surface Metal Cap Cempaaftien Baaa Mtnarai Surface Metal Cap Metal Base Metal Surface ClissiflcatftM 20 year Type 15 year Type 20 year or 15 year Type 20 year Type 10 year Type Not Bonded Brief PeocripMw Asphalt primer 4 piles No. 15 asphalt fait 1 ply 90# Minerai surface All piles sat in steep asphalt or flashing cement Top nailad avary 10* ox. maximum Metal cap and pointing Asphalt primer 3 pliaa No. 15 Asphalt fait 1 ply 90#. Mineral surface All plies sat in steep asphalt or flashing cement Top nailad avary 10* o.c. maximum Metal cap and pointing Concrete priming oil (ceat-tar) ~ 2 plies No. 15 tarred felt 2 plies No. 15 tarred aaheetoe felt Ail piles set In tar base cement Top nailad every 10* ox. maximum Heavy top coat of tar bate cement Metal cap and pointing Asphalt prtmar 1 ply No. 15 asphalt asbestos fait 1 ply rainfbrcsd asphalt asbestos felt Bom plies set in flashing camant Top nailad avary 8* o.c. max. plus all and laps at top and into cant abovt cant mid-point. Strip ail and (oints Hearvy top coat of fleshing camant Metal cap and pointing Asphalt primer 2 piles No. 15 asphalt felt 1 ply 90# Mineral surface All plies set In steep asphalt or flashing camant Top nailed every 10* ox. maximum Meta! cap and pointing 2 pitas No. IS tarred fait Both piles sat in solid travelings of tar base camant Prior to setting metal bate, 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 fett over flange in coal tar pttcl Top pouring ef coal tar pitch and aggragats surfacing Matal cap and pointing NOTTSI 1. This (pacification mu*f ba used In con|unction with Koppers bonded water cooled roofs. 2. This (pacification is recommended for usa with any coal tar pitch roof (pacification wfiprp ponded or standing wetsr will lay in contact with the flashing. 3. Tbia specification may bo uaad aa an alternate to Specification No*. 107. 106 and 101 m/lmt eo apac/flad by fnaarcWfacf. 4. A cant (trip may ba uaad with this flashing construction. 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 installa tion will be completely lost if inadequate or poorly installed flashings are employed. Koppers flashings are an integral part of a Koppers 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, bqtaiao oy the expansion and contraction of the construction-1 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 aa roofing progresses. Metal counter flashing should be installed as flashing 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 Koppers 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 Koppers flashing cement. NOTE: 1. If bonded flashing is required, it must be installed in con junction with a Koppers bonded roof and can be bonded for standard periods up to but not (renter than the period for which the roofing is bonded. 2. If' a Koppers 25-year bonded roof is specified. Flashing Specification No. 110 shall be used in liau of Flashing Specifica tion No. 107. 3. Koppers asphalt primer and asphalt flashing cement may' substituted for primer and steep asphalt in Flashing Specific-. ^ tions No.'s 107,106 and 101. 4. Metal Cap flashings era not bondable and are not included under any flashing bond. 5. Metal work of any description used aa flashing or a part of a flawing system is not bondable and is not included under any flashing bond. * Matarfai* Pitas *r Casts Require* UnH* Asphalt prlmar sNo. IS Aaphalt Fait `0# Minarsl Surface .asp Aaphalt Of Flashing Camant Asphalt Primer No. 15 Asphalt Fait 90# Mlnaral Surfaea Staap Asphalt or . Flaming Camant 1 Oal. 4 4 sq. rl. (3' x 144 LF* 432 sq. ft) 1 1 sq. rl. (3' x 36 LF* 108 sq. ft) 5 Lbs. 3 Lba. 1 Oal. 3 4 sq. rl. (3* x 144 LF* 432 sq. ft) 1 1 aq. rl. (3' x 36 LF* 108 sq. ft) 4 Lba. Of 4 Lba. Concrsts Priming Oil No. IS Tirnd Fait No. 19 Tarrad Asbestos Fait Tar Baaa Camant 1 2 2 S Sal. 4 aq. ri. (3'x 144 LF* 432 sq. ft) 4` *^q..rb(3'xl44LF*43Z*q.ft) Lbs. Far 100 LF x 12'-1 Square Aeprexlmat* Quantity Require* Vi Oal.--(basis 300 aq. ft per gallon) 1 Roll 1 Roll 100 lbs.--(heals 5 x 20 lbs. par 100 sq. ft) 200 lbs.--(basis 5 x 40 lba. par 100 sq. ft at Vis' per coat) Vi Oal.--(basis 300 sq. ft par gal.) Vi Roll 1 Roll 80 lbs.--(basis 4 x 20 Iba. par 100 sq. ft) 160 lbs.--(basis 4 x 40 Iba. par 100 sq. ft at Vis' par coat) Vi GUI.--(baali 300 sq. ft par gallon) Vi Roll Vi Roll 1264 lbs.--(baaia 4 x 44 lbs. par 100 aq. ft. at Via* par coat Intarply) (baaia x 88 Iba. par 100 aq. ft at Vi' par coat top coat) Aaphalt Prlmar No. IS Aaphalt Aabaatoa Fait Reinforced Aaphalt Aabaatoa Fait Flaahlng Camant 1 1 1 3 Oal. 4 aq. rl. (3' x 144 LF* 432 aq. ft) 1 aq. rl. (3' x 36 LF* 108 aq. ft) Lbs. Vi Oal.--(baaia 300 aq. ft par gal.) V4 Roll 1 Roll 240 Iba.--(baaia 3 x SO Iba. par 100 aq. ft at Vi* par coat) Aaphalt Prlmar No. 15 Aaphalt Fait 90# Mlnaral Surfaea Staap Aaphalt or Flaahlng Camant 1 Oal. Vi Sal.--(baaia 300 aq. ft par gal.) 2 4aq. rl. (3' x 144 LF* 432 aq. ft) Vi Roll 1 3 1 q r!.(3'x 36 LF* 108 aq. ft) 1 Roll 60 Iba.--(baaia 3 x 20 Iba. par 100 aq. ft) Lba. 120 Iba.--(baaia 3 x 40 Iba. par 100 aq. ft at Via' par coat) No. 15 Tarrad Fait Tar Baaa Camant No. IS Tarrad Fait Stripping for stripping mats! flanga ~ oal Tar Pitch 2 3 2 stripa 2 4 sq. rl. (3' x 144 LF* 432 aq. ft) Lba; 4 aq. rl. O' x 144 IF* 432 aq. ft) Lbs. Vi Roll 132 Iba.--(baaia 3 x 44 lba. par 100 sq. ft at Via* par coat) Vi Roll--(2 strips ovar flanga) 25 Iba.--(sotting strips--doas not Ineluda top pour) 5. This is matal work and tharsfora flashing la not bondabla. This spaeifleation should ba uaad with Promsnads Tils roofs, No. 20 whan bondad roofing is raquirad. 6. All End laps ofpitas of flashing systems must ba Staggsrad or broken with underlying piles. JL 7. Nailing stripa must be provided where necessary to assure maximum holding power. 8. Flashing Specification No. 108 may be used as an alternate when specified by the architect Specification No. 107 106 20 year type 15 year type METAL CAP COMPOSITION BASE MINERAL SURFACE Seei # 4f piiei wtk Keppew Wed--f C--wi I O(uM'!k-WQ.CMMhp.MlWIW 4 th KaaesMett U abto WitoAbMUwtttioStCoUwaAwgatoTtMo.k* hhmmmm.V| vtofc Ifippan AtpMl yim Iwfaf mpN amwi< P Cent Stotp m4 up W| * i*Mt Z w. Caito Skip to he map. pek 04 Stytt Utoh m Met Keeh. er *eppm Stotp AgpheP e S*ep taefk C*mi Ship (Week Ctm Ship tm JUST/t. r L a.*. V -- s-fir-- ` O . Oaafe el type* -- JL*- Application Extend plies of roofing (alts and pitch mopping* up all walla, parapet* and curbs for a distance of two (2) inches above cant strip. A raggle not leas than eight (8) inches above the roof deck is to ba providatL Prim* all masonry walls from top of roofing felts to raggle with Koppers Asphalt Primer. Allow to dry thoroughly. Mop on with Koppers Steep Asphalt a strip of No. IS Asphalt Felt extending from the ranis to not leas than four (4) inches on the roof deck. On top of this apply a second atrip of Asphalt Felt with mopping* of hot Staap Asphalt, extending the felt onto the roof deck one (1) inch beyond the preceding strip. Mop on additional strips in a imilnv fashion until a four-ply 20 year Specification No. 107 or a three-ply IS year Specification No. 106 reinforcement has been obtained. Mop on with Koppers Steep Asphalt a strip of 90 pound mineral sur face roofing fait of sufficient width to extend from the raggle to the surface of the deck. Nail with on* and one-half (1V4) inch barbed roofing nails through flat tin discs at upper edge approximately ten (10) inches ox. (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*3*) in length. Ends of connecting strip* are to overlap three (3) inches and are to break at least twenty-four (24) inch** with and lap* of underlying strip. End laps shall be thoroughly mopped with staap asphalt The stripa 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 phes of felt shall be firmy pressed into mopping* of steep asphalt so that there will be no wrinkles in the finished surface. Install matal cap flashing. 17 Specification No. 110 20 & 15 year type (for water cooled roofs) METAL CAP COMPOSITION BASE (2+2) COATED SURFACE Application Cant strip* shall be installed at the angle between the roof deck and the parapet wall or any other similar perpendicular surfaces. Extend plies of roofing felts and pitch mopping! up all walls for a distance of two (2) inches above cant strip. A raggle of not leas than ten (10) inches above the roof deck is to be provided. Prime ail masonry walls from top of roofing felts to raggle with Koppers Concrete Priming Oil (coal tar base). Allow to dry thoroughly. Set two plies of Koppers Approved Tarred Felt in troweling* of Koppers tar base roof cement. Have plica extending from the bottom of the raggle; the first extending out onto the deck not less then 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 Base Roof Cement, each ply extending onto the deck one inch beyond the preceding ply. Nail with one and one-half (1*4) inch barbed roofing nails through flat tin discs at upper edge approximately ten (10) inches o.c. (For brick or block construction, nail into vertical mortar joints. For concrete construction, nail to treated wood nailing strips sat in flush with the surface.) felts a re mot to exceed tani fccrthese isfc>*S<imD in length. Ends of connecting strip* are to overlap three (8) inches oil are ta brack at least twenty-four (24) inches with laps of underlying strip. m,, All plies of felt mI1 be firmly prsased into the troweling! of Koppers Tar Base Roof Cement so that there will be no wrinkles in the finished surface. Coat the eatire surface of the composition base flashings with a heavy troweling of Koppers Tar Bass Roof Cement Tn+*ii metal cap flashing. NOIt: This specification must bs'tsUawsd for fleecing *t 20 or 13 yssr tsrm Koppersbends* water --Wear--fs. It may b* spadflad for usa with any Keppars bondW roof In lltu of standard flashing specification where additional protection against enter laying In contact with flashing is ant!elpatad except Specification No. 20. Specification No. 108 20 year type (reinforced asbestos) .; METAL CAP ^ ASBESTOS BASE (1+1) COATED SURFACE Application bfyk with K#p*n Cam ant. MrUi Cawnfrr EUWwnf Seal t# M| ml plm *fth Kippart fiatWnf Ctmant l afy W Keen A+mm let* Flwfcm m* * Ktw Ciem IUanew fltiiCua Prim* Wafl with ICappm Pnmr, I--fa| mm4 Cant Stop and W| t toft 2 m. Cant Stnp t ba mmrn- pm4 ntb OH Styfc Prtab m fit IWi. r Kippaw Stop Alpha* an Stop Iwh, Cant Strip (Wto Cant Strip h* Extend plic of roofing telU and pitch mopping* up all walla, parmpata and curbs for a of two (2) in^tt abova ****** atrip* A rafgla not laaa than alght (8) inchaa or raora than twalva (12) inchac abova the roof dack it to ba providad* i * Prims all mhaonry walblfam ttp o! rndbijftslS tfl rsggls'withKoppers Asphalt Primer. Allow to dry thoroughly. In a uniform coating of Koppers Flashing Csmsnt, install earn (1) ply of Koppers No. 15 Asphalt saturated asbestos felt extending from the raggle to not fete 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 asbsstoe bass fleecy (reinforced fabric (id* down). Nail with one ana one-half (114) i,n--cvh m---a--s-o--n--r-y--r-o--oafi-n-g---n--a-i-ls---t-h--r-o-u--g- lh flat tin .d1*i-s-c-s---a1l--oo upper edge eight (8) inchee ox. msvirwirm into mortar joints. For concrete < o. nail to treated wood nailing sittrnippst Msat uins fgluasshkwith thhsewsnirsfsecsa withaspppprrnpteflte through flast tmin discs. End laps for ths two (2) plies shall b* noils* than thins (8) inchss end staggered ntot lass than twsennty-fou_r (2. 4). inches. End laps of reinforced ossa shall b* nailed ver- dcally a minimum of ones into ths wall at upper edge and ones into ths cant at a point not lower than the mid point of the cant. End laps of reinforced has* after nailing shall be covered with a strip of Koppers asbestos felt not lass than four (4) inchss wide sat in a coating of Koppers Flashing Csmsnt Coat entire surface of fleshing with Koppers Flashing Csmsnt (including nail caps along top edge of flsshing as well as top edgss of felts to seel at wall). Interply and top coatings shall be troweled uniformly, full height and continuously approximately one-eighth (14) inch thick. Pliee most be laid in smoothly with no pockets, wrinkles or buckles. Install metal cap flashing. 18 Specification No. 101 10 year type METAL CAP COMPOSITION BASE MINERAL SURFACE 80 Ko , Metai RMhmf. taffi* plOlf W* <W)W Willi ! Application Extend plies of roofing felta and pitch moppings up all walls, parapets and curbs for a distance of not leas than six (6) inches above the roof deck. A raggie of not leas than eight (8) inches above the roof deck is to be pro* vided. Prime all masonry walls from top of roofing felts to raggie with Koppars Asphalt Primer. Allow to dry thoroughly. Mop on with Koppars Steep Hoof ing Asphalt a strip of No. 15 Asphalt Felt extending from a height of not leas than eight (S) inches on the vertical surface to four (4) inches out on the roof deck. On top of this apply a second strip of Asphalt Felt with moppings of hot 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 raggie to the surface of the deck. Nail with one and one-half (lVi) inch barbed roofing nails through flat tin discs at upper edge approximately ten (10) inches ox:. (For brick or block construction, nail into vertical mortar joints. For concrete construction, nail to treated wood nailing strips sst 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 axe to break at least 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 rite ends of each strip shall have a two (2) inch selvage. The two (2) inch selvage shall he coated with Flashing Cement and shall be overlapped by the overlying sheet and be thoroughly pressed into place. Twtall CBp flAlhlB#. NOTE: Cant strip may sjMoHltd for um with tMa apteMcrton. ^Specification No. 100 Ail metal METAL CAP COMPOSITION UNDERLAYMENT METAL BASE METAL SURFACE For Wood and Precast Gypsum Decks: g.e+enH first two (2) plias of dry roofing felt up vertical surfaces for a distance of not lass than four (4) inches and cut off the remaining plies at the angle of thereof deck. Felt Undertayment Frit rsinforcamsnt 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 with infTM btM Prior to installing the metal'baa* flashing, sat two (2) plies of No. 15 tarred frit in solid troweling! of Koppers tar baas cement Plies shall extend from the bottom of the raggie or not lass than a point six (6) inches in height down the vertical wall andout on to the deck for a rtiitanre of not leas than four (4) inches and fivs (6) inches respectively. Coat the entire surface of the top ply with tar base cement before installing the matal base flashing. End laps of the two undsrlaymant plias shall ha staggered and thoroughly Installation of Matal Base and Counter Flashing A raggie of not less than tan (10) inches above the roof deck is to be provided. The metal bass flashing shall extend up the vertical surface not less than tan (10) inches and onto the roof deck not leas than four (4) inches. Nail base fleshing to the deck with one and one-half (lVi) 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 snail ha sat in the concrete flush with the surface. Over the part of the matal 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 flaahing shall extend into the raggie not laes than.two (2) inches and shall have a four (4) inch exposed apron extending down over the top edge of metal base flashing. After tha matal cat flaahing has bean installed, com pletely fill the raggie groove with Koppers fleshing cement Install metal cap flashing. NOTE: Metal bees flashing requires felt undartaymants at all wail angles, skylight cures and other vertical surfaces before motel baas flashing la installed. 19 INSULATION SPECIFICATIONS with and without vapor barrier Genaral The following specifications for the installation of insulation are recommended so as to provide and insure the owner the maximum effect and life of the insulation. . Should the manner of attachment as specified by the indi vidual insulation manufacturer conflict with the following, the insulation manufacturer's specification shall be followed. Koppers Company, Inc., Guarantee Bond Covering Built-Up Roofing and Flashing does not cover roof insulation nor will Koppers Company. Inc. be responsible for any damage caused by or the result of the use of insulation or its manner of attach ment to the substrata. Selection and use of insulations and vapor barriers rest with the designer of the complete system, however. Koppers reserves-'., the right to accept or reject any materials used m conjunction with a bonded roofing, membrane. Acceptance of materials or method of installation shall not' be construed as a guarantee. Applicable portions of General Requirements on pages 3 through 5 are a part of these specifications. 1. Insulation The roofing insulation must be kept dry at all times and ba-adan approved type. All roof insulation shall be dry when installed. It should not be applied over anything but a completely dry substrate nor should'it be applied when subsequent traffic from roofing crews, other trades, and equipment may damage it Broken or damaged sheet* must not be used except after squaring and then only used as fill in pieces. If the deck slope is one (1) inch per foot or more the insula tion must be able to retain nails, or wood nailers must be in stalled perpendicular to the slope at each course of insulation. Provision for wood nailers in this fashion will provide both a surface for anchoring of roofing felts which shall be laid perpen dicular to the wood nailers as well ea an insulation stop. Spac ing of nailers must be such that the insulation fits snugly with the nailers but must not be force fitted. No more insulation shall be laid at any one time than can be protected by pitch and felt in case of sudden weather changes. Edges of insulation shall be brought closely together and shall not be forced into place. Where insulation joins vertical sur faces the insulation shall be cut in a neat manner allowing at least one-half (Vs) inch clearance. When more than one (1) layer of insulation is used, joints in each layer shall not coincide. All layers shall be parallel to preceding layers. 2. Vapor Barrier Vapor barriers are normally used where high humidity condi tions are to be expected inside the structure for various reasons. The desirability or necessity for a vapor barrier depends on many variables such as climatic conditions, soil conditions, building occupancy, etc. The proper design and specification of such vapor barrier, or the omission of such vapor barrier, thus becomes the sole responsibility of the designer or owner. Any subsequent failures, due to either the installation or lack of such installation, will not be Koppers responsibility. This will also apply if it appears desirable to install such vapor barrier to the underside of the entire roofing assembly. 3. Water Stop* (Ternporsry Protection) Water stops consisting of two (2) plies of tarred felt and moppings of Old Style Pitch for fiat roofs or asphalt felt and as phalt for steep roofs extending onto the deck at least six (6) inches and lour (4) inches on top of the insulation, shall be applied at the end of each day's work over exposed edges of insulation. Water stops shall be continuous and tight This temporary protective measure must be removed cleanly when work is resumed. 4. Cut-offs (Permanent Installation) Venting of roof insulation at walls, curbs, eaves, etc., is recom mended. Therefore, cut-offs should not be installed at edges of insulation adjoining these areas for venting purposes. 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. 3. Nall* and Fasteners Nails for use with insulation shall be of sufficient lengths to pass through the insulation and make a warimiim 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 reserve* 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 nail* such as "Simplex" or equal. Approved mechanical fasteners should be used for securing inmlrtinn to metal decks when required. 8. Wood Nailers Wood nailing strips must be provided to form a solid retentive base for anchoring ail metal flashing 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 on* (1) inch beyond the apron or flange and must be anchored securely to the roof deck or roof deck supporting member directly thereunder. Nailers should be treated for preservation. Wood nailers, installed on or m non-nailable decks for slopes one (1) inch per foot or more or when insulation is requited of a non-nailable type, shall be run in the direction perpendicular to the direction in which the felt* are to be laid. 7. Cant Strips Cant strips are required at all places where the plane of the roof meets a vertical surface requiring flashing. Cant strips reduce what would otherwise be one sharp 90* bend at the flash ing and roofing juncture to two (2) 46* angles. Cant strips on wood decks shall be set on top of the insula tion and secured to the deck by nailing through the insulation or cut with a shoulder to accommodate the thickness of the insulation and attached directly to the deck. Cant strips normally are of wood or preformed fiber board. Cant strips for poured gypsum or poured concrete decks may be formed by a poured cant provided a shoulder is formed to accommodate the thickness of the insulation which will abut it However, a treated nailer may be installed in poured gypsum or to poured concrete decks to accommodate the insulation thickness to which a standard cant can be nailed securely. Cant strips on steel deck installation* 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 0f 4- x 4- with a 45* sloped face. 8. Edge Strip* Tapered edge atrip* of fiberfaoard with a mirimnm incline of 2" slope designed for perimeter use to contain water are recom mended. They shall M 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 FIB* Application of a Koppers Bonded Roof ovqr.these types of fill' varies according to the characteristics of the fill and the cond 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 is applied. In general. a lightweight inr.l.Hr.f fill most be able to vent itself and thereby dry. otherwise serious effects to the roofing membrane will result Koppen will not accept a vapor barrier beneath a lightweight fill nor a fill over a type of substrate that will not permit aaequate venting from below such as poured concrete, (invented metal decks, etc. Provisions should be made wherever posaibla to provide addi.ional 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 bsfrsssa tha fill and the board insulation to pravant fill moisture from affecting the insulation and roofing. la Additional Information Koppen will not bond its roofing over insulations such as Foamglass Fibergias when miling of the insulation or felts over the insulation is required. On wood docks with inclines under one (1) inch per foot, use Specification No. 201 whan installing these insulations. For information concerning those and other insulations, con sult Koppers Supplemental Specifications. NOTE: 1. Insulations to comply with Underwriter*' Laboratories, Inc., Class A, B or C roof coverings must be listed under Under writers' Laboratories Guide No. 360 018 of thair Building Ma terials List For metal deck roofs, insulation must also b# listed under their Guide No. 360 R 13.13. 2. Methods of iTotalling inmktimi are discussed in Koppers Supplemental Specifications. INSULATION SPECIFICATION NO. 200 W(NnwSmsPl CisecnssStMOmyss-ewuMmM-MUtevtaaoliserutneaanrtsee--r)F__la_nk Application of Insulation The roof deck shall be covered with one (I) layer of approved rosin-sized sheathing paper weighing approximately five (5) pounds per one hundred (100) square feet Sheathing paper shall be lapped two (2) inches and secured to the deck by nailing. Over Precast Gypsum and Gypsum Metal Bound Plank Decks - sheathing paper may be omitted. On decks having incline* up to two (2) inches per foot each iheet of insulation shall be secured to the deck by nail* at each of the four corners and on inclines exceeding two (2) inches per foot additional nails are to be spaced on* (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 then one layer of insulation is installed and joints broken, or if ship-lap type is used, roofing above insulation shall be constructed according to Koppen Specifications Nos. 5,7,8-A, 9,32-A, 33,41-A, 800-A or 3200-A, depending uponthe slope of the roof. If only one layer of insulation is installed, or if ahip-lap type is not used, the roofing shall be applied according to Koppen Specifications Nos. 1. 2, 3-A, 4, 2o-A, 30, 31, 40-A, 300-A or 2500-A on wood decks, with tbs exception that the red rosin paper may be omitted provided it has Dean installed below the insulation. INSULATION & VAPOR BARRIER SPECIFICATION NO. 201 (Humidity ComHttons-wttti veaer terrier) Weed--Peered or Preceet Qypeum--Metal Beaded tiiane plena Application of Idembran* Below Insulation 1. The wood roof deck shall be covered with one (1) layer of approved rosin-tiled 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 ntire surface, lapping each sheet nineteen (19) over the preceding sheet and nailing tha sheets in place. On decks having inclines two (2) inches to six (8) inches per foot us* No. 16 Asphalt Felt 3. Follow (2) in Specification No. 203 for 2-ply vapor barrier. 4. Extend all felts up vertical surface* and cut off at height of insulation. Application of limitation 1. Mop the entire surface with a uniform coating of Old Style fitch into which, while hot firmly embed the insulation. When roofs have an incline of from two (2) inches to six (6) inch** per foot use Steep Roofing Asphalt 2. On decks having inclines two (2) to six (6) inches per foot each sheet of inaulation shall be secured to the deck by nails at each of the four comers, and on incline* exceeding six (6) inches per foot nails are to be spaced one (1) foot apart along edges and stagger-nailed through the longitudinal center of each sheet All nails shall penetrate the deck at least threefourths (*/) inch. Nailing of two layers of insulation shall be through the second or top layer only. When insulation is laid in tiro layer*, mop tha entire surface of tha first layer with Old Stole Fitch on net roofs and Steep Asphalt on steep roofs into which, while hot embed the second layer of insulation. (This is optional as layer* 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-A, SOO-A or 3200-A, depending upon the slop* of tha roof. INSULATION SPECIFICATION NO. 202 FOR FLAT DECKS Appncvnon of vrauraon 1. Apply a uniform coating of Old Styla Pitch to the deck. If precast concrete slab or tua deck, strip mop with Old Style Fitch 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 STEER DECKS (Incline 2 to S Indies ptr foot) Application of Insulation 1. Apply a uniform coating of Steep Roofing Asphalt to the deck into which, while hot embed the inaulation. 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 on* (1) foot apart and shall pene trate the deck at least three-quarters (%) of an inch and shall be spaced along tha edge and stagger-nailed through the longi tudinal center of each sheet of insulation. When the deck will not permit nailing (which necessitates neiling 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 slop* of the roof. INSULATION & VAPOR BARRIER SPECIFICATION NO. 203 WwRiwra vi^r HnW) Pauftd CiMrM*fFKtit cmihIi Application of Membrane Mow Insulation 1. Apply a uniform coating of Old Style Pitch to the deck. On precast concrete slab or tala deck, strip mop with Old Style Pitch np to four (4) inches from the edge of each joint. 2. Lay over the entire surface two (2) full thicknesses of Koppen Approved Tarred Felt, lapping each sheet nineteen (19) inch** over the preceding sheet--mopping with Old Style Pitch the foil nineteen (19) inches so that in no place shall felt touch felt 3. Extend all plies of fait up vertical surfaces and cut off at height of insulation. Application of Insulation Apply a uniform coating of Old Style Fitch over the entire sur face into which, while hot embed the insulation. If there are two (2) layen of inaulation mop the entire surface of the first layer with Old Style Pitch into which, while hot embed the second layer of insulation. 21 Application of Roofing Above Insulation The roof shall be applied according to Koppen Company. Inc.'s Specification! 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 declc 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 tapping 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 stripe 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 each 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 (%) 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 necessitates providing nailing strips). insulation shall be secured to each nailing strip with nails spaced approximately one (1) foot apart Nailing of two layers 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 Nos. 8-A, 32-A, 41-A. 800-A or 3200-A, depending upon the slope of the roof. INSULATION & VAPOR BARRIER SPECIFICATION NO. 204 (Humidity CsndMsns--nrltfi vsesr terrier) Metal Decking NOTE: Koppers Company. Inc., will not bond roofing over metal decks unless the metal deck is insulated with approved type insulation and thickness. Refer to Koppen Supplemental Spec ifications. Application of Membrane Below Insulation A. Felt Type Coat the ribs of the metal deck with Steep Asphalt and then install two (2) full thicknesses of Koppen No. 15 Asphalt Felt, lapping each sheet nineteen (19) inches over the preced ing sheet, mopping with Steep Asphalt the full Width of the nineteen (19) inch lap. Extend ell felt up vertical surfaces and cutoff at height of insulation. B. Vinyl Type Fire resistant adhesive and vinyl-type vapor barrier as listed by and applied as specified by Underwriten' 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 sgainst wind up lift and movement, must be attained. NOTE: 1. Care must be 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. Application of Insulation A. Felt Typa Apply a continuous, uniform coating of Steep`dAsphalt into which, while hot, embed the insulation. B. Vinyl Typa Apply approved adhesive over approved vapor barrier in rib bons at rate specified by U.L. and F.M. and place insulation. NOTE: When more than ona (1) layer of insulation is applied, the top surface of each layer shall be coated with Steep Asphalt into which, while hot embed the succeeding layer. When the incline of the root is one (I) inch per foot or more, the insulation shall be secured to the deck through the top layer with the proper devices which are in accordance with recommended procedures of the deck end insulation manufac turer. Application of Roofing Above Insulation The roofing shall be applied according to Koppers Company. Inc.'s Specifications Nos. 8-A, 17, 18. 32-A, 41-A. 800-A or 3200-A. depending upon the slope of the roof. RE-ROOFING SPECIFICATIONS Due to varying conditions of the roof dock and surface of the open, remopping, and applying 2 plies of felt before new roofing old roofing, it will be necessary for a representative of Koppen is Installed according to re-roofing specifications. Before the Company. Inc., to approve the type of specifications for re-roof application of new roofing, the surface of old roofing shall be ing if a Koppen Roofing Bond is to be issued. No bond will be made smooth and clean. In places where surface is slightly issued without prior approval from Koppers. rough, apply a flood coat of Coal Tar Pitch (for pitch roofs). Moisture trapped within an old roofing system will seriously Asphalt (for asphalt roofs) may be applied to level the surface. and quickly affect a new membrane. When such procedure does not provide a suitable base for new No bond will be issued over any old insulated roof regard* roofing, install insulation in steep asphalt, over asphalt roofs or less of condition unless old roofing and insulation are removed pitch, over pitch roofs, to the deck prior to application of new roofing materials. No d. Application of new roofing exception to this requirement will be permitted unlees explicit permission is obtained from the Technical Department of Koppers Company. Inc.. Tar & Chemical Division. In general, we recommend the following practice and spec ifications for re-roofing work. Over Tsrrad Fett and Pfteh Roofing Now roofing shall be applied according to Koppen 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 NOTE: Koppers Company, Iae* Guarantee Bond does not cover roof insulation or failure of roof deck. The application of s 'f~~ where there is a possibility of pitch seepage through the deck before the application of new built-up roofing. Koppen Bonded Roof over an old roof shall not eonstitnts s waiver of these conditions. 1. Original deck must be checked to determine that it is Over Asphalt Roofing on Docks When Nailing Is Possible structurally sound, smooth and in a condition to perform satis Roofing shall be applied according to Koppen wood deck factorily for the term expected of the new roofing membrane. specifications with the exception that the approved rosin-sized If it is not, provisions must first be made to accomplish this paper may be eliminated. It insulation is installed, apply roof vital requirement ing according to Koppen Specifications for over poured con 2. All wood nailers, metal flashings, drains and flanges, sign crete decks, setting insulation in asphalt supports, flag poles, etc., must be checked to determine their structural soundness and anchorage, again, to insure they will Ovar Asphalt Roofing on Decks Where perform for the term expected of the new roofing membrane. If unsatisfactory or questionable, they must be replaced. 3. Assuming there is no inflation involved, the existing roofing membrane must be checked thoroughly. a. If it has disintegrated to the 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 Nailing Is Not Possible Roofing shell be applied according to Koppen concrete dec) specifications with the exception that each bottom sheet of fel snail be strip mopped to the old roofing, and these strip moppings shall be not leas than 8 inches apart If new insulation is applied, set in mopping of asphalt to old roofing. must be removed. b. If items one (1) and two (2) above are considered satis Application of New Flashing factory, and the existing membrane can be made smooth and All old built-up flashing must be removed and new built-up clean, it will not be necessary to remove the existing membrane. composition flashing installed according to Koppen Specifica 22 c. On old roofing, repair all buckles and blisters by cutting tions. FLASHING DETAILS 8a Ko There are numeroua flashingdetaila that have been proven by ^texperience over the years. There are normally a number of r 'Acceptable construction details for accomplishing one purpose, rhe 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 de tails to assist the architect in providing the best details for specific jobs. V*nt Pipes, Stacks, Flagpoles, and Other Projections All vent pipes, stacks, flagpoles, or other projections penetrat ing the built-up roofing, whether indicated an drawings or not, must have a proper metal sleeve flashing with flange, pan flash ing with flange or other flanged installed. Behind metal sleeve and beneath roofing membrane next to deck install metal pitch dam as shown in dataiL Tha sheet metal flange must be cemented to the surface of the felt with a mopping of hot coal tar pitch. Over flange apply, with alternate mopping*. two (2) reinforcing plies of tarred felt so that the first extends not less than three (3) inches beyond the outer edge of the flange and tha second not lass than six (6) inches Curb expansion joints are to be flashed in accordance with All roof drains shall bo provided with metal roof drain Koppers specifications for parapet walls and must provide nailing to hold metal cap and membrane in place. flanges which extend at least 12" beyond drain opening and shall be stripped with felt in accordance with drain dataiL All Metal cap must be designed to expend so as not to disturb drains should be provided with a*peinn joint sleeves. flashing. t It is the responsibility of the designer of the building to pro The sheet metal flange furnished with the drain must be vide for adequate expansion joints. cemented to the surface of tha fait with hot coal tar pitch or For the protection of the roofing system against splits caused flashing cement Over the flange apply, with -alternate stop by expansion and contraction, Koppers recommends that an 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) pings or troweiings, two (2) reinforcing plies of tarred felt so that the first extends not leas Him three (3) inches beyond the outer edge of the flange, and the second not leas than six (6) inches. where type of deck material changes, (4) where control, expan sion. 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 level or slope. 23 FLASHING DETAILS (continued) Future Columns, Sign Supports and Angle Irons At all locations where future columns, sifn supports and angle Fill metal pen with hot coel-tar pitch or flashing cement irons are to penetrate built-up roofing, pitch pockets 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 As an alternate to the installation of pitch pockets wooden felt with hot coal-tar pitch or flashing cement Over the flange curbed base units with cant strips can be installed to accept a apply, with alternate moppings, two (2) reinforcing plies of standard built-up composition-base flashing. Intricate metal tarred felt so that the first extends not lees than three (3) inches cap flashings for this unit must be fabricated and continuously beyond the outer edge of the flange and the second not leas 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 leas 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 felts with a mopping of hot coal tar pitch. Over the flange apply with alternate moppings, two (2) rein forcing plies of tarred felt so that the first extends not less than three (3) inches bejrond the outer edge of the flange and the second not less than six (6) inches. Roof Opening *--Ventilator Curbs extending 8 inches to 12 inches above roof surface shall be provided at all openings for skylights, ventilators, expansion joints, etc., to provide for in stallation of adequate base flashing. Wood Cent 4" x 4" 24 TCI 00 FLASHING DETAILS (continued) EDGE DETAILS Tapered Cant Flat and Steep Junction r* t--Em Raised Edge Hanging Gutter NOTE: For Mushroom Vent details, see page 26 and refer to Koppers Supplemental Specifications. T Vmt Hds Ope*** ir to 24' O.C 25 FLASHING DETAILS (continued) Relief Joint Equipment Support W--4Unm* UT OC tO~O.C r*io-AAk. Isolated Flashing For Movement Roof Vent WALKWAYS Treated Wood Walkway Traffic Pad Waterproofing and Dampproofing Waterproofing and dampproofing requirements vary '^rom one project to another. No two sets of require* ments 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 material*. Experience has proven, that when difficult protection problems have been encountered, coal tar waterproofing 8a \ZS Ko 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-acholaatic 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 SI,000 grant for tuition assistance at each of the several participating colleges and universities. In such cases where tuition costs may be leas 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 CHICAGO. ILLINOIS 60603 122 South Michigan Avenue Tel: 312-939-2400 DETROIT, MICHIGAN 48203 301 W. Eight Mile Road Tel: 313-366-5200 HOUSTON, TEXAS 77015 Industrial Road Gate #1 Tel: 713-453-5446 KANSAS CITY, MISSOURI 64116 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 225 H. K. Porter Building 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 WOODWARD, ALABAMA 35189 (Birmingham) Tel: 205-788-1611 'District Office* KOPPERS COMPANY, INC. TAR & CHEMICAL DIVISION Pittsburgh. Pa. 15219