Document nm6GpwwxJQLrVDQN26kyGRZ21

1 ,* %a .-V#V * BUILT-UP ROOFING * SPECIFICATIONS MANUAL FOR ARCHITECTS AND ENGINEERS / f s < COAL TAR PITCH ROOFING WATERPROOFING DAMPPROOHNO^ROOFINSUCATIOK^FLASHmOS i(' I cMrillCtppn y MMJp NEW CONSTRUCTION Dock Ceaitructiaa S^o and at Daok In Taara Typaat Surface H*. af Spot Pag* PBoa No. No. FLAT DECKS Waad Pourad Cawpat*. Pourad Oypaunt - - or-r o*.2* o*4*- pr.-r 0*4*. 25 SSblS: ,MT 13 10; Grand ar Slag IS- - . ir 3 *' T3 Gkfaa4.ar.Sag 3- Precart Concrete -' Procaat fypeum, pourad gypauai. Gypeum ratal bound pimtk Matal widt inuUoi Prcmcneda Til* wr. Poured Caapata Watar Caaltd arar poured canerata.'paurad lyyaia, *r < procaat caapata tlab 0*4" (T-2* r.4* <r-2* o*-r o.r 0*.|* " '> CM* or-r r Orauol ar Slag 4 13 OraOal arSIpg -.3 ' 33 braoal ar Slag . 3 13 Oraaal ar Slag, - 4 23 ' Oraaal ar Slag V '13 .Ooaval ar Slag 4 3 10 pfgmgggdt JR| 4 ' 33 ` Otatral ar Slag 13 Ok*tel or Stag " 4 4 STePDfCKS - 1** " 5: 2' ' 3 . 30* 3 3 ;4 7 ... A . 10 P 11 P 12 3 13 1 IP * 10 30 10 23 11 34 11 - Aggregate Surfaaa' Wood. Pourad or Procaat Gypcuei. Gypeum Molal mind Plank Pourad aad Piaoaot Coraato, and ratal widt latMladaa PWlfTWI MotsmR 2*4* r-4* 3*4* r-d' 30 Oraual ar Slag* S SO0-A " n 13 Oraaal ar'Slag 4 IR04 i* . 30 Oraaal ar Sag ' 4- 100-A 13 13 Oraaal ar Stag 3 33004 13 ' -cj Waad r-* 3*-f* 13 Mmmd-, te 31-A 13 3 44 13 FoufW ClMftN If PfWfld Gyp*wm r-** 3*4* M 10 Minorai 3 334 <9 3 P4 .-13, . Precast Gypeam, Gyptum Metal Sound Plonk, Procast ConoRt* r.* 3*-P* 13 kUnofoi 10 MilMTOl 3 ' 34-A It . 2 33-A 13 Swrfocw Sm Kopf>#r* Supplemental lviltUp Roofing Spwificatlw for buying nd detail* of Smooth Surfoco Stoop Roofing. RE-ROOF INC INSULATION Dock Centtrvctien Wood, Preca* Gypwm, Gypeum Metal Sound Plonk Poured Concrete, Poured. Gypwo ond Precatf CewtMte Slot:* Metal , Urr-o--iwIJot^iy- Pv-o--n-u4*toPi-w--i-i Moriwol Hwmtdby Normal unity-HL "ra^-^-Rt mO.t, High FLASHINCS Typ* CoonpatiHan to Compaiition to Compaiitian I, ratal Cap and Nr War and ratal Cop ond Mctai Cap and Mctol Cop a Nothing ftaa# fiaohing Dttaih (Vanta, SMdl, Drain* and othor Jainr^ Phdahing Stripe far Eavat and Udga* and in Taara 10 13 23 Non* Mar 23 WATERPROOFING AND DAMPPROOFINC Oangfal Inttrvctiora................................................................ Membrane Water pt a*Sag..................................................... Poge-N*. 1*-' Spat. N*. 200 201 303 203 304 Pap* Ha. >4 14 . .|j IS: 15 Spaa. Nat/i 101 10* 107 100 110 . Pap* Ha.' 1*-1P IP ' IP 1S-I* IS-lt '2041 2143 Poge Ha 33 2444 2447 Koppers Goa Tar built-up roofing Koppers coal tar, built-up roofing provides ` one of the most durable roofing mem branes' known. The advantages are found in the inherent superior characteristics of coal tar pitch, the only time proven water proofing material for low-slope mats. > Coal tar'pitch has a natural resistance to water, and -even air and water vapor penetration. A- tight molecular structure enables coal tar pitch to permanently r withstand water penetration and forther ' prevents oxidation of the roof surface. Koppers water-cooled mof specifications take advantage of the unigoe-Water- resistant chiracterisdcs of cotftar pitch ( to give you mamttafeftceEftee roofing. - Anther unique feature of Koppers ioal tar roofing is im permanent selfhealing ability. Alligatoring and hairline cracks, common to most materials, even tually cause damage to the roofing mem branes. Coal tar pitch', has a property - known as "cold-flow," which automatic - ally corrects these conditions before seri ous damage takes place. This "cold-flow" feature even heals small mechanical frac tures 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 perform ance, at no extra cost. And you'll be covering your building with nature's finest protective material. KOPPERS COMPANY, M TAR PRODUCTS DIVISION . Pittsburgh, Pa. 15219 V' $- A Koppers Slag or Gravel Surfaced Roof consists of layers of tarred felt cemented with p:tch to form a continuous skin over the entire roof deck. The actual waterproofing agent is the pitch. The number ot layers or "plies" of tarred felt required varies from 3 to 5 and depends on the type of deck and the length of service desired. The number of plies used does not affect the impermeability ot the rooting, hut a greater number does prolong its life. Either slag or gravel provides a satisfactory surface. GENERAL REQUIREMENTS' This manual contains roofing specifications and procedures which are based on the many years ot Koppers experience and generally accepted good roofing practice. They are in tended to provide the architect, engineer, general contractor and roofer with the proper information to plan and construct the best built-up roof with the most time-proven materials available today. The following requirements are part of the detailed specifica tions contained m the following pages. * _ should it be appfirtf when subsequent traffic trom roofing crews, otlttr trades, and* equipment may damage it. A tem porary roof should'be applied to the deck prior to laying of ^ any insulation or roofing until ail' danger of damage frotri" these haiards ha* been eliminated.- Over metal decks all insulation shall be installed perpen dicular to the direction of the flutes. r *7 'S'* . Expansion Joints* . '*`e < Dck It is the responsibility of the designer of the. building to pro All decks shall be installed in accordance with the deck men- vide for adequate expansion joints!. *. utacturer specifications. They shall be 'properly graded to For the protection of the roofing system against splits caused drain outlets and shall be clean, smooth, completely dry. by expansion and contraction, Koppers recommends thut un rigid, and free of debris. Any deck defect shall be corrected . expansion joint be installed: 1) on large roof areas"ai least-, before, application of roofing. every 200 feet in each direction, 2) at all places whejvthe structural supports and roof assembly change difrttiort. In approving any deck as satisfactory to receive a Koppeis roof, only the deck surface is accepted.'it is the responsibility < ot the building designer and deck manufacturer to. provide. , .3). where type of deck material changes. 4),whcre control. -.expansion, or contraction joints are provided in structural . steely deck material, or deck system. ; Jgr expansion and contraction, and for support of maximum' anticipated loads'. Application of Felts ' Roof Openings Curbs extending 8* to 12' above roof surface shill be pro vided at all openings for skylights, ventilators, `expansion joints, etc. to provide for installation of adequate base. Hashing. Roof Drains All roofing is to be built up in place with alternate shoppings and layers of felt over the proper preliminary work as spe cified in-this book under the several subheads tor various types of deck construction and slope. Application is to be made by experienced workmen only and in the manner here-; inafter described. The finished roof is to consist of the num\ ber of plies and type of surfacing as specified under the proper subhead in the specifications. All roof drains shall be provided with metal roof drain flash ing flanges which extend at least 4" beyond drain opening and shall be stripped wih felt in accordance with drain detail All drains should be provided with expansion joint sleeves. Vapor Barrisr 1 Apply the roofing so that the direction of the flow of water is over and not against laps. Broom or press all plies of felt into the hot pitch and lay without wrinkles, buckles 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 pli<s of felt'not less -than 10 inches. End-stripping or taping of these laps is not permitted. The desirability or necessity for a vapor barrier .depends on . The widths of felt are laid shingle fashion, not only because many variables such as climatic conditions, soil conditions, : this method produces a stronger membrane but because it building occupancy, etc. The proper.design and specification' also makes it possible to construct a roof-of rany.-dcsired of such vapor barrier, or the omission of such vapor barrief, number of plies in a single progressive mopping. This is thus becomes the sole responsibility of the designer or owner. accomplished by varying the widths of the edge'laps. Three- Any subsequent failures, due to either the installation or lack ply roofing, for example, is achieved by lapping each Width of such installation, will not be Kippers' responsibility This-, approximately two-thirds over the preceding width: for 4 will also apply if it appears desirable to install such vapor plies, a lap of approximately three-fourths the width is barrier to the underside of the entire roofing assembly. required. In all cases the plies of felt must be laid shingte fashion. Insulation Application of felts in a method where ftgo plies are-laid over two plies, three plies over one ply, or any combination All roof insulation shall be dry when installed. It should not be applied over anything but a completely dry substrate nor other than ail plies together in shingle fashion will not be permitted at any time except as may be speciftcalfy provided for in our printed specifications. 7C|0 r Eopp*rs Flat Roois ADVANTAGES OF COAL TAR PITCH FOR FLAT ROOFS Two important questions should be asked about any roofing to be applied on flat decks: 1. Can it resist prolonged contact with water without deteriorating? 2. Does it have the ability to heal itself automatically? "Roofs' built with Old Style Pitch* and XpprovetTTarred Felt DO resist water and they DO heal themselves. .\ RESISTANCE TO WATER 1. Prolonged contact with water is a condition almost impos sible to avoid on Rat roofs. Poor drainage, low spots, or settle ment of the building may cause it. Service records of over 50 years by coal tar pitch roofs with little or no attention prove the resistance of tar to water. Old Style Pitch is practically insoluble in water, none of its constituents having more than a slight water solubility. Koppers Built-up Roofing is resistant to moisture and sunshine. THE SELF-HEALINC PROPERTY 2. Weathering and rapid changes in atmospheric conditions can cause cracks in the top surfaces of some types of roofing. However the vital consideration is whether these cracks are permanent if they do appear. Old Style Pitch has a property technically known as "cold flow" and even at ordinary temper atures 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 Roofs readily conform to slight irregularities in the deck and yet remain waterproof, . - THE EXTRA HEAVY TOP POURING Additional protection is given a Koppers Roof by the extra heavy top covering of roofing pitch which is poured on (not" mopped). THE CRAVEL OR SLAG SURFACE The gravel or slag surface on a Koppers Roof provides an armor against hail, driving rain, sleet and snow. It also pro vides additional wearing surface which protects the roof against foot traffic. Roofs with gravel or slag surfaces cling to the deck even in severe wind storms. THE EXTRA SATURATION OF THE FELT The tarred felt ushd in Koppers Roofs absorbs one and onehalf times its own weight of coal tar during saturation. This large proportion of saturant insures high strength and maxi mum durability. PRESERVATIVE AND NON-CORROSIVE ACTION Old Style Pitch contains coal tar creosote, which is unsurpassed as a preservative for wood, felt or other materials which are used in roofing construction. Koppan StMp Roofs In conjunction with, flat roofs, Koppers Company, Inc. will bond three types of steep roofs. Koppers Slag or Gravel Surfaced Steep Roofs for slopes from two (2) inches to four (4) inches per foot are constructed of asphalt saturated felts set in steep asphalt A top coating of steep asphalt, into which either slag or gravel is imbedded, completes this type construction. Koppers mineral surface steep roofs are constructed of Koppers Asphalt Felts set m Koppers Steep .Asphalt. The surface material is composed of Koppers Selvage Edge Mineral Sur face roofing, a heavy asphalt saturated felt thirty-six (36) inches in width, of which nineteen (19) inches is bare and seventeen (17) inches of the top surface is covered with gran ules. This is embedded in Koppers steep asphalt with each sheet lapping the preceding sheet nineteen (19) inches, thereby pre senting to the elements a continuous tough granule surface. Koppers smooth surface steep roofs are constructed of perfo rated asbestos felts thoroughly impregnated with specially refined asphalt firmly embedded in Koppers Steep Asphalt. Koppers Perforated Asphalt Saturated Asbestos Felts produce a long lasting weather resistant roof. For detailed specifications regarding smooth surface steep asbestos roofs refer to Koppers Supplemental Built-Up Roofing Manual. Koppm Roofing Bonds Bonds on Koppers Roofing and Flashings are issued by Koppers Company, Inc., and its surety on roofs constructed according to Koppers specifications and when applied by roofing contractors approved in writing by Koppers Company, Inc. The Koppers bond guarantees that, in accordance with the terms of the bond. Koppers will make repairs to the roof which are necessitated by ordinary wear and tear by the elements to keep that roof in watertight condition. The Koppers bond is not available on roofs over private residences. It does not cover the installation or replacement of any decking, vapor barrier materials, insulation, or metal work. The Koppers bond is not intended as a substitute for a commonsense roof-maintenance program by the owner, nor is it an effective instrument in the face of abuse to the roof by excessive foot traffic and abuse from other trades, etc. NOTE--Koppers Company, Inc., trill issue Roofing Bonds in such portions of the United States as are covered by its inspection service. General Roofing Information The intent of these specifications is to provide a water tight roof. The quantities of pitch shown are for estimating purposes only. .The specified number of plies of approved taned felt must be used. The methods of construction outlined in these specifications must be followed unless modifications are allowed by Koppers Company, Inc. KOPPERS 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 an approximate weight of 15 pounds per 108 square feet, or 60 pounds per roll. Koppers Approved Tarred Felt meets the following specifica tions: The Underwriters' Laboratories. Federal Specifications No. HH-F-201. A.S.T.M. D-227. OLD STYLE PITCH# Complies with the following standard specifications: Federal Specifications R.P. 381 Type I (Federal Specifica tions Board)--"Coal Tar Pitch for Built-up Roofing." A.S.T.M. D-450 Type A. Underwriters' Laboratories. Old Style Pitch is sold in metal containers, 450 to 500 lbs., and in bulk. UNDERWRITERS' LABORATORIES CLASS A RATINC Roofs constructed according to Koppers specifications, with slag or gravel surfaces, carry the Class A rating of the Under writers' Laboratories. 4 deck construction: WOOD DECKS Gravel or slag embedded in pouring of pitch Alternate layers of pitch and felt Mopping of pitch layers of felt Sheathing paper Wood deck incline: MAXIMUM INCUNC 2 IN. * FT. surface: 8d Ko 25 year _ 5 ply _ Spec. No. 1 20 year 15 year -- 4 ply -- Spec. No. 2 10 year -- 3 ply -- Spec. No. 30 For convenience in estimating use these material quantities MATtllAU Ipse. No. 1 per 100 m. ft. Spec. Ne. 2 Spec. Me. 20 Sheathing Paget Oravel Ot Slag Ska. 71 he. ISO he. 400 he. 0 3001k*. Ilk*. SOhe. 12S Ike. 400 hei Ol ' 300 he. S tin. 40 lb*. 12S Ike. 400lbf. O* 3001k*. SPECIFICATIONS Select clauses as required. Optional clauses in italkr . . Condition of Surface to Receive Roofing Do not apply roofing to any surface which is not reasonably smooth and free from projections or holes which might cause puncture of roofing membrane. Lumber shall be seasoned and dry. Immediately before the application of the roofing, thor oughly clean the surface of dust and all loose material. Roof deck shall be properly graded to outlets. Application of Roofing Materials 1st. Apply one (!) thickness of twenty-five (25) pound (5 pounds per 100 sq. ft.) sheathing paper over entire surface of deck, lapping each sheet two (2) inch over preceding sheet. Nail in place. 2nd. Sp. M*- 1 Spec. N*. 2 Apply over the entire sur face of the sheathing paper, two l2) dry plies of Kopptrs Approved Tarred Felt. Lap' plies nineteen 119) inches. Nail at lap on twelve (12) inch centers. 2nd. Spec. Me. SO Apply over the sheathing paper, one tl) dry ply of Koppers No. SO Tarred Fett. Lap ply four 14) inches. Nail at lap on twelve (12/ inch centers. 2nd. Shredded Weed Piker Decks . . . On Shredded Wood Fiber Decks. Koppers Coated Base Sheet lapping each sheet four (4) inches over preceding sheet and nailing with Capped ES Nails at lap no less than nine (9) inches, and down center of each sheet on eighteen 118) inch centers shall be substituted for the two plies of Koppers approved Tarred Felt in Specs. No. 1 and No. 2 and for the one ply of Koppers No. 30 Tarred Felt in Spec. No. 30. 3rd. Mop with Old Style Pitch the entire surface, preceding, the application of additional plies of felt and apply over the entire surface as follows: 4th. Spec. Me. 1 Koppers Approved Tarred Felt, lapping plies twentyfoiui and two-thirds 124*^/ inches. 4th. Spec. Me. 2 Spa*. No. 30 Apply two (2) pliesKrf Kop pers Approved Tarred Fett. lapping plies nineteen (19) inches. Mop solidly between plies with Otd Style Pitch so that in no space shall felt touch felt. On slopes exceeding one (1) inch and less than two (2) inches nail each sheet of felt with simplex fiat head or one (1) inch barbed roofing nails through fiat tin discs, two (2) inches from the back edge on twenty-four inch centers. 5Hi. 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. Slag or gravel shall be from one-fourth (V*) to five-eighths (H) inches in size and shall be dean and dry. Central Pitch shall not be heated above four hundred (400) degrees F. Tarred felt shall be laid without wrinkles or buckles. Gravel or slag shall be applied within eight (8) days after application of felts. During freezing weather, all expoaed felts shall be either immediately graveled or slagged in. or. if this is impossible, exposed felt surfaces shall be glazed with a mop ping of pitch. BRIEF SPECIFICATIONS The roofing is to be applied by a roofing contractor approved by Koppers Company, Inc., who shall apply the roofing in stria accordance with Koppers Specifications (No. 1 for 25 years. No. 2 for 15 years. No. 30 for 10 yean) and requirements, and subject to Koppen inspection and approval. Upon completion of the work, the contractor is to furnish Koppen Roofing Bond to the owner. Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain a Koppers Roofing Bond. 5 deck construction: POURED CONCRETE and POURED GYPSUM DECKS incline: MAXIMUM INCLINE 2 IN. PER FT. surface: Gravel or dog eeibedded in pouring of pitch A1tomato layers of pitch and fait Mopping of pitch Poured concrete or poured gypsum deck My" - 4pl* - ^ No- 5 15 year -- 3 ply -- Spec. No. 7 IE FOURIO tmilM DCCX It NOT THOROUOMT DRY, Amy ROOFWtO ACCOROMO TO SFfCtFICATION No. 11 FOR 23 VIAas ANO No. 13 FOR 15 YfARS. Alw fif SpMmUmm M*. Ml h Imh^cNm For convenience in estimating use these material quantities MATOHAU (Mr 100 Sq. Ft. PlttkFeered Ceeciete Footed typiie Fa* Omsl e Stag Spec. No 5 175 Se. 145 fc*. Hh. 4001k*. 300 k. Spec. No. 7 150 he. 140 St. 45 Ike. 4001k*. 3001k*. 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 rea sonably smooth and free from projections or holes which might cause puncture of roofing membrane. Surfaces must be dry. Immediately before the application of the roofing, thoroughly clean the surface of dust and loose materials. Roof deck shall be properly graded to outlets. Decks of incline exceeding one (1) inch and less than two (2) inches to the foot shall permit nailing, or creosoted nailing strips must be set in the deck flush with its surface, these strips to be spaced three (3) feet apart and placed up and down and not across the slope of the roof. Application of Roofing Materials 1st. (A) Over Peered Coecretet Mop deck completely with Old Style Pitch. ( B ) Over Pound Oyptum: Strip mop the deck with moppings of Old Style Pitch spaced approximately six t6> inches apart. 2nd. Spec. No. J Apply over the entire sur face. four 141 plies of Kop- pers Approved Tarred Frit, lapping plies twenty-seven and one-half i27'n inches. Mop solidly between each 27^1 inch lap with Old Style Pitch so thnt in no place shall felt touch felt. 2nd. *p. *- 7 Apply over the entire sur face three 131 plies of Koppers Approved Tarred Felt, lapping plies twenty-four and two-thirds (2d*s) inches. Mop solidly between the 24V> inch lap with Old Style Pitch so that in no place shall felt touch felt. 6 Where slope of deck is more than one 11) inch but less than two (2) inches per foot and deck permits nailing, nail along back edge of sheet, nails to be spaced twenty-four (24) inches o.c. Where nailing strips are insulted, nail each ply of felt with one (l) inch barbed roofing nails through flat tin discs three (3) inches from upper edge on three i.3) foot centers. 3rd. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, in which, while hot, embed not less than four hundred (400) pounds of one-quarter (V.) to five-eighth (%) inch clean dry gravel or three hundred (300) pounds of slag for each one hundred U00) square feet. Pitch shall not be heated above four hundred (400) degrees F. Tarred felt shall be laid without wrinkles or buckles. Gravel or slag shall be applied within eight (8) days after application of felts. During freezing weather, all exposed felts shall be either immediately graveled or slagged in. or. if this is impossible, exposed felt surfaces shall be glazed with a mop ping of pitch. BRIEF SPECIFICATION The roofing is to be applied by a roofing contractor approved by Koppcrs Company, Inc., who shall apply the roofing in strict accordance with Koppers Specifications (No. 3 for 25 years, No. 7 for 15 years) and requirements, and subject to Koppers inspection and approval. Upon completion of the work the contractor is to furnish Koppers Roofing Bond to the owner. Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain a Koppers Roofing Bond. *|o o deck construction: PRECAST CONCRETE SLAB DECKS incline: MAXIMUM INCUNE 2 IN. PER FT. surface: BEAM Grovai or (lag omboddod in pouring of pitch Altornoto layers of pilch and fait Spot or (trip mopping* of pitch Prtcatt concrete dab dock io -- 4 ply -- Spec. No. 10 15 y*ar -- 3 ply -- Spec. No. 11 For convenience in estimatinq use these material quantities MATERIALS par 100 ** Ft. Pitch Pah Oraval OR Stag Spac. No. 10 140 lb*. 40 lb*. 4001b*. OR 000 lb*. Spac. No. 11 140 Ih*. 4)ht 4001b*. OR 000 Nm. SPECIFICATIONS Select clauses as required. Optional clauses in italic. Condition of Surfoco to Receive Roofing Do not apply built-up roofing to any surface which is not rea sonably smooth and free from projections or holes which might cause puncture of the membrane. Surfaces must be dry. Imme diately before the application of the roofing, thoroughly clean the surface of dust and loose material. Decks of inclines exceed ing one (1) inch and less than two (2) inches to the foot shall permit nailing, or creosoted nailing strips must be set in the deck flush with the surface, these strip* to be spaced three (3) feet apart and placed up and down and not across the slope of the roof. AU joints between precast concrete slabs shall be pointed up with plastic cement which shall be troweled so that the top surface is level with the deck. Roof deck shall be properly graded to outlets. Application of Roofing Materials 1st. Each stab shall be spot or strip mopped with Old Style Pitch, keeping pitch moppings back at least four (4) inches from edge of each slab joint. 2nd. Spec. N*. IQ Apply over the entire surface four (4) plies of Koppers Approved Tarred Felt, lap ping plies twenty-seven and one-half 127 Vs) inches. Mop solidly between each 27 *-5 inch lap with Old Style Pitch so that in no place shall felt touch felt. 2nd. Iim. n*. 11 Apply over the entire surface three (3) ptes of Koppers Approved Tarred Felt lap ping plies twenty-four and two-third (241b) inches. Mop solidly between the 241b inch lap with Old Style Pitch so that in no place shall felt touch felt. Where slope of deck is more than one (I) inch but less than two (2) inches per foot and deck permits nailing, nail along the back edge of the sheet, nails to be spaced twenty-four (24) inches o.c. Where nailing strips are installed, nail each ply of felt with one (1) inch barbed roofing nails through flat tin discs three (3) inches from upper edge on three (3) foot centers. 3rd. Pour over the entire surface of the roofing membrane a uniform coating of approximately seventy-five (73) pounds of Old Style Pitch, into which, while hot, embed not less than four hundred (400) pounds of one-quarter (Vi ) to five-eighths (4t) inch clean dry gravel or three hundred (300) pounds of slag for each one hundred (100) square feet. General Pitch shall not be heated above four hundred 1400) degrees F. Tarred felt shall be laid without wrinkles or buckles. Gravel or slag shall be applied within eight (8) days after application of felts. During freezing weather, ail exposed felts shall be either immediately graveled or slagged in, or, if this is impossible, exposed felt surfaces shall be giazed with a mop ping of pitch. BRIEF SPECIFICATIONS The roofing is to be applied by roofing contractor approved by Koppers Company. Inc., who shad apply the roofiip m strict accordance with Koppers Specifications (No. 10 for 25 years. No. 11 for 15 years) and requirements, and subject to Koppers inspection and approval. Upon completion of the work, con tractor is to furnish Koppers Roofing Bond to the owner. Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain a Koppers Roofing Bond. 7 deck construction: PRECAST or POURED GYPSUM DECKS incline: /MAXIMUM INCLINE 2 IN. HI FT. surface: 20 yIS5 PJy* SP*C-No*12 15 y*ctr*4 ply-Spec. No. 13 IF FOUttO YF*UM THOtOUOHlY MY SFfCIFICATION Na. S FOt 23 YIAt AND N*. 7 FOR IS Y1A* MAY U USR>. For conronionco In ostimating uu thM material quantities MATRIAU pm 1M Sq. Ft. Spec. N*. 12 Spec. N*. 13 Fitch TwtmI Felt Ofml o An ISO the. 7Jib*. 4001b*. OR 90011m. 1231b*. 401b*. 4001b*. OR 3001b*. i ' .< I Wi 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 rea sonably smooth and free from projections or holes which might cause puncture of the membrane. Surfaces must be dry. Imme diately before the application of the roofing, thoroughly clean the surface of dust and loose material. All joints between pre cast gypsum slabs shall be properly grouted; grouting not required on gypsum metal .bound plank. Roof deck shall be properly graded to outlets. Application of Roofing Materials 1st. Apply over the entire surface two (2) dry plies of Koppers Approved Tarred Felt. Lap plies nineteen (19) inches. Nail at lap on twelve (12) inch centers. ALTERNATE: Apply over entire surface one (t) ply -of Koppers Coated Base Sheet, lapping each sheet four (4) inches over preceding sheet and nailing at lap no less than nine (9) inches, and down center of each sheet on eighteen (18) inch centers. 2nd. Mop with Old Style Pitch the entire surface preceding the application of additional plies of felt. 3rd. **N*- U --Apply three 13) plies of Koppers Approved Tarred Felt, lapping plies twenty-four and two-third i24Sji inches. Where slope of deck is more than one ill inch hut less than two I2l inches, nail each sheet of felt with one and one-half ll`/i) inch barbed roofing nails through flat tin discs or with staples, six l6> inches from the buck edge on twenty-jour (24) inch centers. All laps shall be mopped with pitch the full twenty-four and two-thirds (242o / inches, so that m no place shall felt touch fell. 8 3rd. Spec. N. 13 Apply two (2) plies of Koppers Approved Tarred Felt, tapping plies nineteen (19) inches. Where slope of deck is more than one (1) inch but less than two (2) inches, nail each sheet with one and one-half ll'/i) inch barbed roofing nails through flat tin discs or with staples, six 16) 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 fell 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 one-quarter (Vi) to five-eighth (%) inch clean dry gravel or three hundred (300) pounds of slag for each one hundred (100) square feet. Pitch shall not be heated above four hundred (400) degrees F. Tarred Felt shall be laid without wrinkles or buckles. On Gypsum decks only bright (non-galvanized) nails or the FeltFast ES nail should he used. Gravel or slag shall be applied within eight (8) days after application of felts. During freezing weather, all exposed felts shall be either immediately graveled or slagged in. or. if this is impossible, exposed felt surfaces shall be gia2ed with a mop ping of pitch. BRIEF SPECIFICATION The roofing is to be applied by a roofing contractor approved by Koppers Company, Inc., who shall apply the roofing in stria accordance with Koppers Specifications (No. 12 for 25 years. No. 13 for 15 years) and requirements, and subject to Koppers inspection and approval. Upon completion of the work, the contractor is to furnish Koppers Roofing Bond to the owner. Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain a Koppers Roofing Bond. i i deck construction: m METAL DECK with INSULATION *-- Gravel or slag tmbaddad in pouring of pitch f` incline: MAXIMUM INCLINE 2 IN. EE* FT. surface: 8q Ko 25 year 20 year 15 year 4 ply -- Spec. No. 17 3 ply -- Spec. No. 18 For convenience in estimating use these material quantities MATERIALS or 100 Sq. Ft. Spot. No. 17 Spa*. Na. IS AepMr F*h (*) ZSIte Mite. (*) 23 Ite. 43 Ite. Mtch * Ol Oroval 173 Ite 300 Ite OR 400 Ite. 143 Ite. 300 Ite OR 400 Ite (*) Wfct* wore ikon tayar a# intulariaa mttalUd end mpMf it mopped ktWMH layoff, odd 25 paundt ptr square far oath wuppiag. , SPECIFICATIONS twenty-four and two-third (244b) inches. Mop solidly between each 244b inch lap with Old Style Pitch Select clauses as required. Optional clauses in italic. so that in no place shall fell touch ;elt. i Condition of Surface to Rocoivo Roofing ALTERNATE: 2nd and 3rd. As a substitute for the first piy of tarred , Metal roof decks shall be dry, clean and free from rust or oily substances. Immediately before the application of the insula* non. thoroughly clean the surface of rust and loose material. Roof deck shall be properly graded to outlets. Application of Insulation and Roofing Materials felt apply one ply of Hoppers Coated Base Sheet in a solid mop ping of Steep Asphalt directly over insulation tapping each sheet four 14) inches over preceding sheet. Mop entire surface with uniform coating of Old Style Pitch. Spa*. Na. 17. Apply over the base sheet three (3) plies of tarred felt lapping plies twenty-four and two-thirds (244b) inches and 1 1st. Alt insulation shall be run perpendicular to the direc- mopping solidly between each ply with Old Style Pitch. t non of the flutes in the metal deck. All layers of insulation shall Spa*. Na. It. Apply over the base sheet two (2) plies of tarred be parallel to preceding layers. felt lapping plies nineteen (19) inches and mopping solidly be insulation shall be secured to the metai deck by a mopping of tween each ply with Old Style Pitch. t steep asphalt. Under side of insulation may be mopped when if slope of roof exceeds one (1) inch per foot, each ply of felt , applied over open-nb decks when the opening at the top of the and base sheet shall be nailed through flat tin discs nine and ridges is one (I) inch or more. The insulation must be thor one-half (9VS) inches from the back edge and on twelve (12) oughly dry and of approved type and. if the roof incline exceeds inch centers. Nails shall be soft nose roofing nails three-quarters one (1) inch per foot, must be able to retain nails. When more (Vi) inch longer than thickness of the insulation so that points than one < 11 layer of insulation is usad-lMCm* s^fMt hf'Mtch of nails will turn and clinch on under side of insulation. s layer shall be coated with Steep AsphaU jnia'WhicKlwhikjpot. 4Hi. Pour over the entire surface of the rooftnfiflhibrane a embed the succeeding layer. (This is optional because layers may uniform coaung of approximately seventy-five (75TT)ounds of be clipped together with mechanical fasteners.) All joints shall Old Style Pitch into which, while hot. embed not less than four . be broken between the layers of insulation. Edges shall be hundred (400) pounds of one-quarter <V4) to five-eighth t Va) , brought closely together and shall not be forced into place. No inch clean dry gravel or three hundred (300) pounds of slag more insulation shall be installed at any one time than can be for each one hundred (100) square feet. , protected by pitch and felt in case of sudden weather changes. Cut-offs consisting of two (2) plies of Tarred Felt and moppings Gonoral of Steep Asphatt extending on to the deck at least six (6) inches Pitch shall not be heated above four hundred (400) degrees F. and four (4) inches on top of the insulation shall be applied Tarred Felt shall be laid without wrinkles or buckles. at the end of each day's work over exposed edges of insulation. Gravel or slag shall be applied within eight (8) days after These cut-offs shall be removed at the start of the next days work. application of felts. During freezing weather, all exposed felts If slope of roof exceeds one (1) inch per foot, in addition to shall be either immediately graveled or slagged in. or, if this is , being set in steep asphalt, insulation must be fastened to the impossible, exposed felt surfaces shall be glazed with a mop deck by means of screws, clips, or cleats which shall be placed ping of pitch. at each comer and at the center of each sheet of insulation. When more than one (1) layer of insulation is applied, fas BRIEF SPECIFICATION teners shall be driven after top layer of insulation is applied. The roofing is to be applied by a roofing contractor approved 1 2nd. Mop a uniform coating of Old Style Pitch over the insu lation preceding the application of roofing membrane. 3rd. spa*. N,. IT Apply over the entire surface, 1our I4i plies of Hoppers Approved Tarred Felt, lappnig plies . < enty-seven and one-half 127!/s) inches. by Koppers Company, Inc., who shall apply the roofing in strict accordance with Koppers Specifications (No. 17 for 25 years. No. 18 for 15 years) and requirements and subject to Koppers inspection and approval. Upon completion of the work, the con tractor is to furnish Koppers Roofing Bond to the owner. Kop pers will not be responsible for any damage to or below built-up Mop solidly between each 271m inch lap with Old Style Pitch roofing caused by or as the result of insulation. so that in no place shall felt touch felt. 3rd. Spa*. N*. t( Apply over the entire surface, Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain three (Jj plies of Hoppers Approved Tarred Felt, lapping plies a Koppers Roofing Bond. 9 T surface: PROMENADE TILE SURFACING Til* set in cement mortar Loyr of fait Mopping of old style pitch Alternate layers of old style pitch and felt Mopping of old style pitch Poured concrete slab deck incline: MAXIMUM INCLINE 1 IN. PEE FT. deck construction: 10 yar -t- 5 ply -- Spec. No. 20 For convenience in estimating use these material quantities MATfKIAU per IOO Sq. Ft. Spec. N*. 20 Old Style Pitch Felt US lbs. 75 lbs. SPECIFICATIONS Condition of Surface to Receive Waterproofing Do not apply built-up roofing to any surface which is not smooth and free from projections and holes which might cause puncture of the membrane. Surfaces must be dry. Immediately before the application of the roofing, thoroughly clean the surface of dust and loose material. Roof deck shall be properly graded lo outlets. Application of Waterproofing Material 1 st. 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 Oid Style Pitch solidly between each 19 inch lap so that in no place shall feit touch felt. 3rd. Mop the entire surface of the first two plies of felt pre ceding the application of additional plies with Oid Style Pitch. 4tii. Apply over the entire surface two (2) plies of Koppers Approved Tarred Felt, lapping plies nineteen (19) inches. Mop Old Style Pitch solidly between each 19 inch lap so that in no place shall felt touch felt. 5Ht. Before laying the tile, the surface of the roofing shall be thoroughly cleaned and the roofing mopped with Old Style Pitch into which, while hot, embed one (1) layer of tarred felt, lapping each sheet two (2) inches over the preceding sheet. Only part of the roof surface shall be covered with the last ply of felt at one time, the tile then being laid over that portion at once. 6tfi. The vitrified clay tile shall be set in not less than threequarters (%) inch of Portland Cement Mortar (I to 3 mix). The joints shall be grouted full with Portland Cement Mortar 'I to 2 mix). The tile shall be laid to show three-sixteenths 10 (H.l inch to one-fourth (V*) inch joints. Expansion joints three-quarters (H) inch wide filled with plastic mixture, which must be approved by the architect, shall be provided between the tile and all flashings. Either metal or mastic expansion joints shall be provided throughout the roof surface as may be necessary. Expansion joints shall extend through to the roofing and shall be spaced not more than twenty (20) feet apart in any direction. They shall also be installed at all walls, skylights, curbs, etc. > General (f insulation is required use rigid board type. Pitch shall not be heated above four hundred (400) degrees F. Felt shall be laid without wrinkles or buckles. All end laps shall be staggered at least six (6) inches. Tile shall be applied within eight (8) days after application of felts. During freezing weather, exposed felt surfaces shall be glazed with a mopping of pitch. BRIEF SPECIFICATION The waterproofing is to be applied by a roofing contractor approved by Koppers Company, Inc., who shall apply the waterproofing in strict accordance with Koppers Specification No. 20, and requirements, and subject to Koppers inspection and approval. Notice: Koppers Company, Inc., will not be responsible or liable for leaks due to the installation, contraction or expan sion of Promenade Tile and will not be responsible for the taking up and replacing of tile in order to locate leaks through the waterproofing. Detail specifications on pages 16 to 22 are a part of this speci fication where applicable. WATER COOLED ROOFS deck construction: incline: surface: 8a * KoMAXIMUM INCLINE I IN. PEI FT. 20 yJS -- 4 ply -- Sp*c No. 23 15 year -- 3 ply -- Spec. No. 24 TOR BONDED FLASHINGS ON WATER COOLED ROOFS - SEE SPECIFICATION No. 110 For convenience in estimating use these material quantities MATCHAU per 100 tq. h. Spec. Me. 13 Spec. Ne. 24 ftMh Mr Orevei o lMfce. Mb. 70o0he. 500 he. 2151k*. 45 lb*. 700 he. Ol 5001b*. SPECIFICATIONS Select clauses as required. Optional clauses in italic. Condition of Surface to Receive Roofing Do not apply built-up roofing to concrete surfaces which are not reasonably smooth and free from projections and holes which might cause puncture of the membrane. Surfaces must be dry. Immediately before the application of the roofing, thoroughly clean the surfaces of dost and loose material. Application of Built-Up Roofing 1st. Mop deck completely with Old Style Pitch. 2nd. Spw.Me.J3 2nd. m*. m Apply over the entire sur Apply over the entire sur face four (4) plies of Koppers Approved Tarred Kelt, face three (3) plies of Hop pers Approved Tarred Felt, lapping plies twenty-seven lapping plies twenty-four and one-half (27Vs) inches. Mop solidly between each 27 Vs inch lap with Old Style Pitch so that in no place shall felt touch felt. and two-third <24Vs) inches. Mop solidly between each 24*5 inch tap with Old Style Pitch so that in no place shall felt touch felt. All felt shall be turned up not less than four (4) inches at vertical surfaces. 3rd. Pour over the entire surface of the roofing membrane, a uniform coating of approximately seventy-five (75) pounds of Old Style Pitch, into which, while hot, embed not less than four hundred (400) pounds of clean dry gravel or three hundred (300) pounds of slag for each 100 square feet. 4Hl. All loose gravel or slag shall be swept from surface and a second uniform pouring of approximately eighty-five 185) pounds of Old Style Pitch shall be applied over the gravel or slag, into which, while hot, shall be applied a second layer of three hundred (300) pounds of gravel or two hundred (200) pounds of stag for each 100 square feet. The entire surface shall then be thoroughly broomed free from all loose gravel or slag. It is advisable to roll the finished surface with a light roller so that aggregate is thoroughly embedded. General Pitch shall not be heated above four hundred (400) degrees F If insulation is required, it must be of the rigid board type. Tarred felt shall be laid without wrinkles or buckles. Cant strips are required at all vertical surfaces. At points where water pressure from the spray is excessive, the roof surface shall be protected with creoeoted board platform or other suitable construction to break the force of the water. These platforms shall be laid on top of the roof surface and not fastened to the deck. BRIEF SPECIFICATION The roofing is to be applied by a roofing contractor approved by Koppers Company, Inc., who shall apply the roofing in strict accordance with Koppers Specifications (No. 23 for 25 years. No. 24 for 15 years) and requirements, and subject to Koppers inspection and approval. Upon .completion of the wont, the contractor is to furnish Koppers Roofing Bond to the owner. Koppers Roofing Bonds furnished where Koppers Inspection Service is available. Detail specifications on pages 16 to 22 are a part of this specifi cation where applicable and must be adhered to in order to obtain a Koppers Roofing Bond. 11 incline: STEEP ROOFS deck construction: MAXIMUM INCLINE * IN. PER PT. MINIMUM INCLINE 2 IN. PER FT. surface: 20yar--5ply--Spc.No.300A a!mm?cTd ISyear--4ply--Spac.No.2500A ao.Tm? m*a*o 20 yaar--4 ply--Spec. No. 800A 2, wTc^l*d 15year--3ply--Spec.No.3200A m/mTcard Estimating Quantities per 100 sq. it. MATERIALS KappatR Asphalt Friiaar (axcapt an matal) Kappars Na. 15 Asphalt Fait Kappars Staap Asphalt Gnav#4 er JlMflnf $lf Epac Na. SOOA (20 Yaar) 75 Iks. 125 tbs. 400 tbs. 300 lbs. Spaa. Na.2500A (15 Yaar) Mlbs. 100 lbs. 400 lbs. 300 lbs. Spaa. Na. MOA (20 Yaar) 1 fai. M tbs. 150 lbs. 400 lbs. 300 lbs. Spaa. Na. 3200A (15 Yaar) Ipal45 lbs. 125 Iba. 400 lbs. 300 lbs. SPECJFICATIONSs Select clauses as required. Optional clauses in italic. Condition of Surface to Receive Roofing: FOR WOOD DECKS: Same as described under Spec. No. 1. FOR POURED AND PRECAST OYPSUM: Same as described under 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, the creosote 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 screws, expanding nuts or cleats which shall be placed at each corner and at the center of each sheet of insu lation. When more than one layef"of insulation is applied fas teners shall be driven after top layer of insulation is applied. Application of Roofing Materials: 1 st A-l (Spec. Na. SOOA acid Spec. Ne. 2SOOA) Over fitk-entire surface lay i2) plies Koppers No. IS Asphalt Felt. Lap each sheet nineteen 119) inches over preceding sheet. Nail in place. A-2 (Spec. Ne. EQOA end Spec. Ne. 3200A} Over Poured Concrete: Coat entire surface with Koppers Asphalt Primer. Over Precast Concrete: Hold asphalt primer back two (2) inches from all slab joints. 2nd B-l (Spec. Ne. MOA end Spec. Ne. 2500A) Mop entire sur face with Koppers Steep Asphalt into which, while not, shall be applied the felts. B-2 (Spec. Ne. SOOA end Spec. Ne. 3200A) Over Poured Concrete: Mop deck completely with Koppers Steep Asphalt. Over Precast Concrete: Mop deck with Koppers Steep Asphalt holding back two (2) inches from all joints. Over Metal Decks: Mop insulation completely with Koppers Steep Asphalt. 3rd C-l (Spec. Ne. MOA) Over the entire surface lay three (3) plies of Koppers No. IS Asphalt Felt lapping each sheet twenty-four and two-thirds (24-2/3) inches over the preceding sheet. Mop the full width under each ply with Koppers Steep Asphalt and nail through flat tin discs two (2) inches from the upper edge on nine (9) inch centers. C-2 (Spec. Ne. 2500A) Over the entire surface lay two (2) plies Koppers No. IS Asphalt Felt lapping each sheet nine teen 119) inches over the preceding sheet. Mop the full width under each ply with Koppers Steep Asphalt and nail through fiat rin discs two (2) inches from the upper edge on nine (9) inch centers. 12 C-3 (Spec. Ne. ROOA) Over the entire surface lay four (4) plies of Koppers No. IS Asphalt Felt lapping each sheet twenty-seven and one half (27-1/2) inches over the preceding sheet. Mop the full width solid under each sheet with Koppers Steep Asphalt and nail through fiat tin discs on nine (9) inch centers. On precast concrete decks the first mopping is to be held back two (2) inches from all joints. C-4 (Spec. Ne. 33Q0A) Over the entire surface lay three (3) plies of Koppers No. IS Asphalt Felt lapping each sheer twenty-four and two-thirds (24-2:3) inches over the preceding sheet. Mop the full width solid under each sheet with Koppers Sleep Asphalt and nail through flat rin discs on nine (9) inch center. On precast concrete decks the first mopping is to be held back two (2) inches from all joints. 4th D Over the entire surface apply a uniform coating of Koppers Steep Asphalt into which, while hot, embed not less than 400 lbs. of gravel or 300 lbs. of slag for each one hundred (100) square feet. The surfacing aggregate must be an approved type, range from one-fourth (1/4) to five-eighths (5/8) inches in size and be clean and dry. General Koppers Steep Asphalt shall not be heated above 475F and shall not bo applied to the roof at a temperature of less than 400F. All felt shall be laid without wrinkles or buckles. At junction of steep and fiat roofing, the roofing on the flat sur face shall be carried up the inclined surface not less than twentyfour (24) inches before the steep roofing is applied. Application of steep roofing shall start at the point of junction with the flat roof. On Gypsum Decks only bright (non-galvanized) nails or the Felt-Fast ES nail should be used. On Metal Decks the felts over insulation shall be nailed through flat tin discs with soft nose roofing nails three-fourths (3/4) inches longer than the thickness of the insulation so that points of nails wul turn and clinch on underside of insulation. BRIEF SPECIFICATION The roofing is to be applied by a roofing contractor approved by Koppers Company, Inc. who shall apply the roof in strict accord ance with Koppers Specifications (No. 300A and No. 800A for 20 years--No. 2J00A and No. 3200A for 15 years) and require ments and subject to Koppers inspection and approval. Detail specification on pages 14 to 22 are a part of this specifica tion where applicable and must be adhered to In- order to obtain a Koppers Bond. NOTE: Koppers Company, Inc. will issue roofing bond when roofing is applied according to Specifications Nos. 300A, SOOA. 2S0OA and 3200A ONLY when applied in conjunction with Koppers Bonded Flat Roofing. See Koppers Supplemental BuiltUp Roofing Specification Manual for smooth surface asbestos steep roofs. ~\ i t \ l t incline: STEEP ROOFS MAXIMUM INCLINE 9 IN. Eft FT. MINIMUM INCLINE 3 IN. EE* FT. deck construction: surface: 15 y*ar - Spoc. No. 31-A ~ 10yoar-Spoc.No. 4-A ***- 15yoar-Spoc.No.33-A JrI>Ti*oc`_ 10 roar - Spoc. No. 9-A StTSW?" 15 fas - Spoc. No. 34-A SVc*"**10 rwr - Spoc. No. 35-A "'c****** ~ Estimating QuantitiM p#r 100 sq. ft. MATIRLAL Ksppsrt Asphalt Ertmsr Bad Ra*M Shtartilng Ksppsn Stssp Asphalt Ksppan Na. 13 Asphalt Fait Ksppsts Sahtaps Edga Rf*. Spas. Na. 31-A (ISyaar) 3 Ms. EOtbs. JOlht. 110 Mm. Spac Na. 4-A (lOysar) 40 Ms. 30 Ms. 110 Ms. Spaa. Na. 1S-A US rear) ' I tai. IWMs. 30 tbs. 110 Ms. Spat Na. E-A (lOyaas) 0 Ms. 30 Ms. 110 Ms. Spac j Spaa. Na. 34-A 1 Na. DM (ISyaar) | (lOysar) EOMa. tO Ms. SOMs. 30 tbs. 110 Ms. | 110 tbs. Condition of Surface fo Receive Roofing Materials WOOD DECKS: Same as described under Spec. Nos. 1, 2 and 30. POURED .CONCRETE and POURED OYESUM. Same as described under Specs. Nca. 5 and 7. PRECAST CONCRETE: Same as described under Specs. Nos. 10 and 11. PRECAST OYPSUM AND GYPSUM METAL BOUND PLANKS: Same as described under Specs. Nos. 12 and 13. Application of Roofing Materials A. Preliminary Procedure A-1 (Spas. Ns. 31-A) Apply at right angles to incline of roof one (1) thickness of twenty-five (23) pound (5 pounds per 100 sq. ft.) sheathing paper over the entire surface of the deck, lap ping each sheet one (1) inch over the preceding sheet. Nail to hold in place. A-2 (Spaa*. Nm. 33-A aad E-A) Apply to the entire surface of the deck a pruning coat of Asphalt Primer and allow to dry for a period of not less than six (6) hours. Then la) Ovr Esarsd cKrm Mop deck completely with Koppers Steep Asphalt. tb) Over Eiand Oypwm: Strip mop the deck with six (6) inch wide moppings of Koppers Steep Asphalt B. Application of Asphalt Felts B-l (Spac*. Nm. 31-A. UM ad 34-A) Apply at right angles to the incline over the entire surface, two (2) plies of Koppcn No. 13 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 ooe-half (1V4) inch barbed roofing nails through fiat tin discs (or with staples for gypsum decks). Mop solidly between plies with Koppers Steep Asphalt B-2 (Specs. Nat. 4-A aad UM| Apply at right angles to the incline over the entire surface, one (1) ply of Koppers No. 30 Asphalt Felt lapping ply four (4) inches. Nail each ply edge on eighteen (18) inch centers with one and one-half (lVi) inch barbed roofing nails through flat tin discs (or with tuples for gypsum decks.) B-3 (Spec- Na. *-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 118) 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, aad eighteen (18) inches respectively from the upper edge at each nailing strip. C. Application of Mineral Surface Roofing (Spaa*. Na*. 4-A, E-A. 31-A, 33-A, 34-A aad 33-A) Beginning at the low point thoroughly mop a portion of the aspnalt teit 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 tarred felt surface with steep asphalt and into tuis, white hot, embed thoroughly the next sheet of mineral surfaced roofing, taking care that the lower edge meeti 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) indies, nailing the underlying sheet with six (6) ooe (1) inch barbed roofing nails through flat tin discs, starting one (1) inch from the lower edge, spaced five (3) inches ox. 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 nib 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 strip* are installed, sheets shall be nailed along the selvage edge with three (3) inch nails driven through flat tin discs, spaced five (3) inches apart at each nailing stnp and set back two (2) inches from the mineral surface. General Mineral surfaced roofing is to be cut in strips not exceeding twenty (20) feet in length prior to using, aad is to be stacked flat for a sufficient time to permit these strips to become per fectly flat Asphalt Felt and Mineral Surface Roofing shall be laid without wrinkles or buckles. Steep Asphalt shall not be heated above four hundred seventyfive (473) degrees F. At junction of steep and fiat roofing, the roofing on the flat sur face is to be carried up the inclined surface not leu 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. BRIEF SPECIFICATION NOTE: Koppers Company. Inc. will issue roofing bonds where roofing is applied according to the above specifications only when applied in connection with flat bonded Koppers Roofing. General 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 individual insulation manufacturer conflict with the following, the insula tion manufacturer's specification shall be followed. The rooflng insulation must be kept dry both before and after application. (Coppers Company, Inc., Guarantee Bond Covering Built-Up Roofing and {hashing 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 substrate. WOOD NAIUNO mm The general contractor shall provide wood nailing strip* which shall form a nailing base under ail metal flashing aprons and flanges. Strips shall be the full thickness of the insulation and shall extend not less than one (1) inch beyond the apron or flange and shall be securely fastened to the roof deck. cant mm Cant strips on wood decks shall be set on top of the insulation and secured by nailing through the insulation to the deck. On non-combustible decks where the cant is formed with gypsum or concrete, a square shoulder the full thickness of the insula tion at the bottom of the cant shall be formed. NAILS Nails shall be galvanized rooting nails driven through flat tin discs, or Simplex flat bead roofing nails. Nails for use with insulation shall be of sufficient length to pass through the insulation and penetrate into, but not through, the deck construction, with the exception that on steel decks where nailing is necessary, the nails shall be soft-nosed roofing nails which shall not penetrate the steel deck. CUT-OFFS Cut-offs consisting of two (2) plies of tarred felt and moppings of Old Style Pitch or Asphalt extending onto the deck at least six (6) inches and four (4) inches on top of the insulation, shall be applied at the end. of each day's work over exposed edges of insulation. Cut-offs must be removed when work is resumed. It is recommended that cut-offs be omitted at all edges of insulation adjoining parapet walls, cants, eaves, vertical sur faces, etc. Cut-offs may be installed in one continuous direction to the edges at the option of the architect or engineer. General Application of Insulation Insulation must be thoroughly dry and of approved type, and must be able to retain nails, if the slope of the deck exceeds one (I) inch per foot. 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 (Vi ) inch clearance. When more than one (I) layer of insulation is used, joints between layers shall be broken. All layers shall be parallel to preceding layers. Or*r wood, procast gypsum, gypsum moted bound plank docks -- for normal conditions INSULATION SPECIFICATION NO. 200 Application of Insulation The roof deck shall be covered with one (1) layer of red rosin sheathing paper weighing not less than five (5) pounds per one 14 hundred (100) square feet. Sheathing paper shall be lapped two (2) inches and secured to the deck by nailing. Over Preeast Gypsum and Gypsum Metal Bound Plank Decks, sheathing paper may be omitted. On decks having inclines up to two (2) inches per foot, each sheet of insulation shall be secured to the deck by nails at each of the four corners and on inclines exceeding two (2) inches per foot, nails are to be spaced one (1) foot apart, and stagger nailed through the longitudinal center of each sheet. All nails shall penetrate the deck at least three-fourths (V*) inch. Nailing of two layers of insulation shall be through the second or top layer only. Application of Roofing Above Insulation If more than one layer of insulation is installed and joints broken, or if ship-lap type is used, roofing above insulation shall be constructed according to Koppers Specifications Nos. 5. 7, g-A, 9. 32-A. 33, 41-A. 800-A or 3200-A. depending upon the slope of the roof. If only one layer of insulation is installed, or if ship-lap type is not used, the roofing shall be applied according to Koppers Specifications Nos. 1, 2, 3-A, 4. 23-A, 30, 31. 40-A, 300-A or 2500-A on wood decks, with the exception that the red rosin paper may be omitted provided it has been installed below the insulation. Orr wood, pourod or precast gypsum and gypsum metal bound plank decks -- for high humidity INSULATION SPECIFICATION No. 201 Application of Membrane Below Insulation 1. The wood roof deck shall be covered with one (1) layer of red rosin sheathing paper weighing not less than live 15) pounds per one hundred (100) square feet. The sheathing paper shall be lapped two (2) inches and secured to the deck by occastunal nailing. On poured, precast gypsum or gypsum metal hound plank, sheathing paper may be omitted. Ifjoints 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 entire surface, lapping each sheet nineteen (19) inches over the preceding sheet and nailing the sheets in place. On decks hav ing inclines two (2) inches to six (6) inches per foot, use No. 15 Asphalt Felt. 3. Follow (2) in Specification No. 203 for 2-ply vapor barrier. 4. Extend all felts up vertical surfaces not less than eight (8) inches. After the insulation has been laid, turn these eight (8) inch extensions down over the exposed surface of the insulation and thoroughly mop with Old Style Pitch when installing flat roofs, and steep roofing asphalt when installing steep roofs. Application of Insulation 1. Mop the entire surface with a uniform coating of Old Style Pitch into which, while hot. firmly embed the insulation. When roofs have an incline of from two (2) inches to six (6) inches per foot, use Steep Roofing Asphalt. 2. On decks having inclines two (2) to six (6) inches per foot, each sheet of insulation shall be secured to the deck by nails at each of the four comers, and on inclines exceeding six <6) inches per foot, nails are to be spaced one 11) foot apart along edges and stagger nailed through the longitudinal center of each sheet. All nails shall penetrate the deck at least threefourth (Vi) inch. Nailing of two layers of insulation shall be through the second or top layer only. When insulation is laid in two layers, mop the entire surface or the first layer with Old Style Pitch on Aat roofs and Steep Asphalt on steep roofs into which, while hot, embed the second layer of insulation. (This is optional as layers may be clipped together with mechanical fasteners.) Application of Roofing Above Insulation Roofing shall be applied according to Koppers Specifications Nos. 5. 7, 8-A. 9. 32-A. 33, 41-A, 800-A or 3200-A. depending upon the slope of the roof. Ort poured concrete, poured gypsum and precast concrete slab -- for normal conditions INSULATION SPECIFICATION No. 202 FOR FIAT OfCXS Application of Insulatioa 1. Apply a uniform coating of Old Style Pitcb to the deck. If precast concrete slab or tile deck, strip mop with Old Style Pitch up to four (4) inches from the edge of each joint. While the pilch 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 STOP OCCKS (Indio* 2 t* 6 Inch** (Mr Foot) Application of Insulation 1. Apply a uniform coating of Steep Roofing Asphalt to the deck into which, while hot, embed the insulation. On precast tile or slab deck, strip mop with Steep Roofing Asphalt up to four (4) inches from the edge of each joint. 2. If there are two (2) layers of insulation, the entire first layer shall be coated with Steep Roofing Asphalt into whieh, while hot. embed tbe second layer of insulation. Each sheet of insu lation shall be secured in place by nailing. If two (2) layers of insulation are used nailing shall be through the top layer only. Nails shall be spaced one (1) foot apart and shail pene trate the deck at least three-quarters (44) of an inch and shall be spaced along the edge and stagger nailed through the longitudinal center of each sheet of insulation. When the deck will not permit nailing (which necessitates nail ing 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.'s Specifications Nos. 5, 7, 8-A. 9, 20. 23. 24. 32-A. 33. 41-A. 800-A or 3200-A, depending upon the slope of the roof. Over poursd concrsts and prscast concrsi* slab -- for high humidity INSULATION SPECIFICATION No. 203 FOR FLAT HOC! Application of Membrane Below Insulation 1. Apply a uniform coating of Old Style Pitch to the deck. On precast concrete stab or tile deck, strip mop with Old Style Pitch up to four (4) inches from the edge of each joint. 2. Lay over the entire surface two (2) full thicknesses of Kop pers Approved Tarred Felt, lapping each sheet nineteen (19) inches over the preceding sheet--mopping with Old Style Pitch the full nineteen (19) inches so that in no place shall felt touch felt. 3. Extend all plies of felt up vertical surfaces noc leu. than, eight (8) inches and after insulatioa has been htstfeHefi' tum this eight (8) inch extension down over the exposed edge of insulation and thoroughly mop with coal tar pitch. Application of Insulation Apply a uniform coating of Old Style Pitch over the entire sur face into which, while hot, embed the insulation. If there are two (2) layers of insulation mop the entire surface of the first layer with Old Style Pitch into which, while hot. emhed the second layer of insulation. Application of Roofing Above Insulation The roof shall be applied according to Koppers Company. Inc.'s Specifications Nos. 3, 7, 20, 23 or 24. FOR STOP OICXS findIn* 2 to 4 Inch** par F**t) Application of Membrane Below Insulation 1. Apply a uniform coating of Steep Roofing Aspbait to the deck. On precast concrete or tile, strip mop with Steel 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. 13 Asphalt Felt at right angles to the incline of the roof lapping each sheet nineteen (19) inches over the pre ceding sheet Each sheet shall be nailed with one (1) inch barbed roofing nails through flat tin discs eight (8) indies from the upper edge and nails shall be spaced not more than one (1) foot apart. Where nailing strips are used the felt shall be nailed with two (2) nails through fiat 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 not leu than eight (8) inches and after insulation has been installed turn this eight (S) inch extension down over the exposed edge of insulation and thoroughly mop with Steep Asphalt. 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 insulatioa shall be secured in place by nailing. Nails shall be spaced approximately one (1) foot apart and shall penetrate tbe deck at least three-fourths (44) of an inch and shall be placed along edge and stagger nailed through the longitudinal center of each sheet of insulation. When the deck will not permit nailing (which necessitates pro viding nailing strips), insulatioa shall be secured to each nail ing strip with nails spaced approximately one (1) foot apart. Nailing of two layers of insulation shall be through the top layer only. Do not nail the first layer. Application of Roofing Above Insulation The roofing shail be applied according to Koppers Company, Inc.'s Specifications Not. S-A, 32-A. 41-A, 800-A or 3200-A. depending upon the slope of the roof. Ovsr metal decks -- for high humidity INSULATION SPECIFICATION No. 204 Note: Koppers Company, Inc. will not bond roofing over metal decks unless the metal deck is insulated. Application of Membrane Below Insulation 1. Mop the metal deck with Steep Asphalt 2. Lay over the entire surface two (2) full thicknesses of fifteen (13) pound Asphalt Felt lapping each sheet nineteen (19) inches over the preceding sheet mopping with Steep Asphalt the full width of the nineteen (19) inch lap. Extend all felts up on vertical surfaces not less than eight (8) inches. After the insulation has been laid turn these eight (8) inch extensions down over the exposed surface of the insulation and thoroughly mop with Old Style Pitch when installing fiat roofs, and Steep Asphalt when installing Steep Roofs. Application of Insulation Apply a uniform coating of Steep Asphalt into which, while hot. embed the insulation. When more than one (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 roof exceeds one (1) inch per foot, the insulation shall be secured to the deck through the top layer with the proper devices provided by the deck manufacturer. Application of Roofing Above Insulation The roofing shall be applied according to Koppers Company. Inc.'s Specifications Not. 8-A, 17, 18, 32-A. 41-A. 800-A or 3200-A. depending upon the slope of the roof. Orsr foamglas or fibsrglas insulation For information as to the application of these insulating materials over metal decks consult your Koppers representative. Application of roofing to be the same as over other types of rigid insulation on flat roofs where nailing is not necessary. We will not bond roofing when nailing of insulation or felts over insulation is required. On wood decks with inclines under one (1) inch per foofr use Specification No. 201 on page 14. Orsr lightweight masonry insulation Application of a Koppers Bonded Roof over these types of fills varies considerably according to the characteristics of the masonry fill and the conditions under which the roofing ma terial is to be applied. Contact your Koppers representative for our roofing specifications over the type of masonry insulation to be used. A Koppers representative must inspect and approve the condition of the lightweight fill before roofing is applied. 15 8a Ko Due to varying conditions of the roof deck and surface of the old roofing', it wilt be necessary for a representative of Koppers Company. Inc., to approve the type of specifications for reroof ing if a Koppers Rooting Bond is to be issued. No bond will be issued n ilhoiit prior approval from Koppers. However, in gen eral ue recommend the following practice and specifications for re-roofing work. So bond will be issued over any old insulated roof regardless oi conditions unless old roofing and insulation are removed to the deck prior to application of new roofing materials. WHEN OLD ROOFING IS ENTIRELY REMOVED If the old roofing membrane has disintegrated to the extent that it has little value, or if the deck will not render satisfactory service for the period expected of the new roofing, then all old roofing shall be entirely removed. Deck should then be made smooth and any place where it has disintegrated, or where lum ber is defective, must be replaced. Application of New Roofing New built-up roofing shall then be applied according to the specification over the respective type of deck described in this Specification Book. WHEN OLD ROOFING IS NOT TO BE REMOVED Condition of Surface to Receive Roofing If the deck is in satisfactory condition and will render service for the period expected of the new roofing, and the old roofing membrane can be made smooth and clean by the removal of slag, gravel, or excess asphalt coatings, it will not be necessary to remove old roofing. On old asphalt roofing repair all buckles and blisters by cutting open, remopping, and applying 2 plies of felt, new roofing to be installed according to reroofing speci fications. Before the application of new roofing, the surface of old roofing shall be made smooth and clean. In places where surface is slightly rough, a flood coal of Coal Tar Pitch tfor pitch roofs). Asphalt (for asphalt roofs) may be applied to level the surface. When such procedure does not provide a suit able base for new roofing, apply rigid insulation set in Asphalt (over asphalt roofs or Pitch over pitch roofs) over the enure surface of the area to be re-roofed. Application of New Roofing Over Tarred Felt and Pitch Roofing New roofing shall be applied according to Koppers Specifica tions for over Poured Coocrete Decks with the exception that on Wood Decks, 2 plies of Dry Felt shall be applied at all places where there is a possibility of pitch pg through the deck before the application of new built-up roofing. Over Asphalt Roofing on Decks Where Nailing Is Possible Roofing shall be applied armnting to Koppers Wood Deck Specifications with the exception that the red rosin paper is to be climinatrd, If new insulation is installed, apply roofing according to Koppers .Sperification for over Poured Coocrete Decks, setting insulation in asphalt Over Asphalt Roofing on Decks Where Nailing Is Not Possible Roofing shall be applied according to Koppers Concrete Deck Specifications with the exception that each lower sheet of felt shall be strip mopped to the old roofing, and these strip moppings shall be not less than 6 inches apart If new insulation is applied, set in mopping of asphalt to old roofing. Application of New Flashing All old Built-Up flashing must be removed and new Built-Up com position flashing installed according to Koppers' Specifications. GENERAL All metal used in conjunction with the roofing such as flashings, counterflashings, pitch pockets, etc. and ail skylights, ventilators, parapet walls, copings, etc. shall be replaced or properly repaired so that they will render the same length of service as the new roofing. Note: Koppers Company, Inc.. Guarantee Bond does not cover roof insulation or failure of roof deck. The application of a Koppers Bonded Roof over an old roof shall not constitute a waiver of these conditions. ROOFING AND FLASHING BRIEF SPECIFICATION Flashing and roofing shall be installed by a roofing contractor 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 25 year bonds, and sub ject to Koppers inspection and approval. Upon completion of the work, the contractor is to furnish Koppers Roofing and Flashing Bond to the owner. The flashing can be bonded for no longer period than the roof is bonded. Composition boss and mstal cap flashings 10 YEAR --SPECIFICATION No. 101 Application Extend plies of roofing felts and pitch moppings up ail walls, parapets and curbs for t distance of not less than six (6) inches above the roof deck. A raggle of not less than eight (8) inches above the roof deck is to be provided. Prime all masonry walls from top of roofing felts to raggle with Koppers Asphalt Printer. Allow to dry thoroughly. Mop on with Koppers Steep Roofing Asphalt e strip of No. 15 Asphalt Felt extending from e height of not less eight (8) inches on the perpendicular surface to four (4) inches out on 16 ' the roof deck. On top of this apply a second strip of Asphalt Felt with moppmgs of hot steep asphalt, extending the roofing felt onto the roof deck one (1) inch beyond the preceding strip. Mop on with Hoppers Steep Asphalt a strip of No. 15 Asphalt Feit extending from the raggie to not less than four ' 41 inches on the roof deck. Mop on with Hot Steep Roofing Asphalt a strip of 90 pound On top of this apply a -.econd strip of Asphalt Felt with mop- # mineral surface roofing felt of sufficient width to extend from pings of hoc Steep Asphalt, extending the feit onto the roof the raggie to the surface of the deck. Nail with one and one- deck one (1) inch beyond the preceding stnp. Mop on addi half fl W 1 inch barbed roofing nails through flat tin discs at tional strips in a similar fashion until a four-ply 20 year Speci upper edge approximately ten (10) tnches o.c. fication No. 107 or a three-ply 15 year Specification No. 106 r (For brick construction, nail into vertical mortar joints. For concrete construction, nail to creosoted wood nailing strips set reinforcement has been obtained. Mop on with Hoppers Steep Asphalt a strip of 90 pound in flush with the surface.) mineral surface roofing felt of sufficient width to extend from Asphalt felts are not to exceed ten feet three inches (10' 3") in length. Ends of connecting strip* are to overlap three inches the raggie to the surface of the deck. Nail with one and onehaif (14) inch barbed roofing nails through fiat tin discs at and are to break at least twenty-four (24) inches with end laps upper edge approximately ten (10) tnches o.c. (For brick con i of underlying strips. End laps shall be thoroughly mopped with struction, nail into vertical mortar joints. For concrete con steep asphalt struction. nail to creosoted wood nailing strips set in flush with The strips of Mineral Surfaced Roofing shall be cut from across the surface.) T~ the roll so that the ends of each strip shall have a two (2) inch Asphalt felts are not to exceed ten feet three inches (10' ?") in 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. length. Ends of connecting strips are to overlap three (3) inches and are to break at least twenty-four (24) inches with end laps of underlying strip. End laps shall he thoroughly mopped with steep asphalt. Metal Cap Flashing (Not Bonded) The strips of Mineral Surfaced Roofing shall be cut from across T* A metal cap flashing is to be inserted in the raggie immediately upon completion of base flashing. The cap flashing is to extend into the raggie not less than two (2) inches and is to have not less than a four (4) inch exposed apron extending down over the roil so that the end of each strip shall have a two (2) inch selvage. The two (2) inch selvage shall be coated with Flash ing Cement and shall be overlapped by the overlying sheet and be thoroughly pressed into place. the base flashing. Completely fill the raggie with Hoppers flash All plies of felt shall be firmly pressed into mopping* of steep ing cement. asphalt so that there will be no wrinkles in the finished surface. T' As an alternate Koppers flashing cement can be substituted for \ttep asphalt in the application of the flashing felts. 15 YEAR-SPECIFICATION No. 106 25 YEAR-SPECIFICATION No. 107 Metal Cap Flashing (Not Bonded) T Application Metal cap flashing is to be inserted in the raggie immediately upon completion of base flashings. The cap flashing is to extend into the raggie not less than two (2) inches and is .to have not Extend plies of roofing felts and pitch mopping* up all walls, less than a four (4) inch exposed apron extending down over 7 parapets and curbs for a distance of two (2) inches above cant strip. base flashing. Completely fill raggie groove with Koppers Flashing Cement. A raggie not less than eight (8) inches above the roof deck is to be provided. Note: If a Koppers 10, 15 or 25 year Flashing Bond is required, the Sashing must be installed in connection with a Hoppers Prime ail masonry wails from top of roofing felts to raggie Bonded Roof. The flashing can be bonded for no longer period with Hoppers Asphalt Primer. Allow to dry thoroughly. than the roof is bonded. r Metal C--tar Pknhtaf. Baffle ' pentad up villi Koppan Ptashlhf C*meat. i , Seal a# rtf* *f pita* with Koppan Ptashiag Caaaaf. iaffta pointed up with Koppers nothing Cement Metal Caoator Ptaabiof. Seal atV edge of plies with Kappars Ptasbing C*weti. T * 1 ply PO lb. Minora! Surface *--t* I J tfy fO (b. Mineral Surfaced loaf* tap tat ta K--ears Staaa Asphalt or i sat ta Keeeers Steep Asphalt *r K--n Flashina Cement. Koaeers Hashlnp Cooaht. 4 ply Kaaeers 15 lb. Asphalt P*(t Nails through "iet ta K--ears St--p A--halt at Kapoors flashing Coo--t. To on* 1 tart 4, 3, 4 art 7 ta. -- Pact. Prime Well with Koppan Asphalt 2 Ply Koeaon 15 lb. Aiabait Plt la Staaa Asphalt *r K--/ Nblaa Cat--t. To extort 4 art 3 Primer. Kappars Baatthf Pott ta ha carried up Coat Strip aad up Wall at laaat t 2 in. Cant Strip ta ha oappad with Ota Style Pitch ah Piet Boats, or Koppan Koppan lartof Pott ta be carried Stoop Asphalt -- Staap Boats. up Watt at leaat 4 ta. Watt ta be t I with Ota Sty*e Pitch ait Plat loots, or Koppan Stoop Asphalt -- t I Maximum Haight 12"-Minimum Haight S" 17 Mated cap and boM flashing {not bondsd) Composition bass and msted cap flashing for watsrcoolsd roofs SPECIFICATION No. 100 inhere a metal base flashing is used feit reinforcement at ail wall angles, skylight curbs and other vertical surfaces shall be installed as follows before metal base flashing is installed. Extend first two (2) plies of dry roofing felt up vertical sur faces for a distance of not less than four (4).inches and cut off the remaining plies at the angle of the rgof deck. Terminate plies of roofing membrane at vertical surfaces. Mop on with Koppers Steep Asphalt a strut of asphalt felt extending from a distance of not less than ax 0) mehes (or the height of the raggle) up the perpendicular surface to not less than four (4) inches out on flat roofing membrane. On top of this apply a second iii^i tagiapliah frit in jri^opping of steep roofing asphalt, extending, not less than one (1) inch beyond edge of preceding strip. H 5 ply flat roofing is installed, a third reinforcing ply of fell set in steep asphalt is to be applied. . Mop the surface of last piy immediately before installing metal base flashings so that metal base flashing is set in hot pitch. All end joints of reinforcing plies shall break joints and all end laps shall be thoroughly mopped. Installation of Metal Base and Counter Flashing A raggle not less than ten (10) inches above the roof deck is to be provided. The metal base flashing shall extend up the vertical surface not less than ten (10) inches and onto the roof deck not less than four (4) inches. Nail base flashing to tbe deck with one and one-half (lVi) inch barbed roofing nailr. one f 1) inch from outer edge of metal flange on four (4) inch center. For con crete deck, a nailing strip of creosoted wood shall be set in the concrete flush with the surface. Over the part of the metal base flashing extending onto the roof, apply two (2) strips of tarred felt with alternate moppings of roofing pitch. The top strip is to extend two (2) inches beyond the lower strip and both are to be not less than double the width of the flange. Metal cap flashing shall be installed immediately so as to pre vent seepage of water behind base flashing. Metal cap flashing shall extend into the raggle not less than two (2) inches and shall have a four (4) inch exposed apron extending down over tbe top edge of metal base flashing. After the metai cap flashing has been installed, completely fill the raggle groove with Koppen flashing cement. 15 YEAR OR 25 YEAR SPECIFICATION No. 110 . ** Application 3* Cant strip* shall be installed at the angle between the roof deck and the parapet wall or any other similar perpendicular surfaces. Extend plim of roofing felts and pitch stoppings up all walls for a liistggf of two (2) inches above cant strip. A raggle of not less than ten (10) inches above the roof deck is to be provided. Set two plies of Koppers Approved Tarred Felt in troweiings of Koppers tar base roof cgment or in mopping* of Koppers Old Style Pitch. Have plies extending from the bottom of the raggle; the first extending out onto the deck not less than four inches from thg baton oCtha cant strip, and the second, one inch beyond 1: Over this apply two layers of tar saturated asbestos felts simi larly imbedded in Koppers Tar Base Roof Cement or Old Style Pitch. Each ply extending onto the deck ana inch beyond the preceding ply. Nail with one and one-half (l Vi) inch barbed roofing nails through flat tin discs at upper edge approximately ten (10) inches o.c. (For brick construction, nail into vertical mortar joints. For concrete construction, nail to creosoted wood nail ing strips set in flush with the surface.) Feits are not to exceed ten feet three inches (10" 3") in length. Ends of connecting strips are to overlap three (3) inches and are to break at least twenty-four (24) inches with laps of underlying strip. All plies of felt shall be firmly pressed into the troweiings of Koppers Tar Base Roof Cement so that there will be no wrinkles in the finished surface. Coat the entire surface of the composition bsse flashings with a heavy troweling of Koppers Tar Base Roof Cement. Metal Cap Flashing (Not Bonded) Metai cap flashing is to be inserted in the raggle immediately upon completion of base flashings. The cap flashing 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 base flashing. Completely fill raggle groove with Koppers Flashing Cement. Note: If a Koppen 15 or 23 year Flashing Bond is required, the flashing must be installed in connection with a Koppers Bonded Roof. The flashing can be bonded for no longer period than the roof is bonded. 18 f* f` f 1 5 t I i X t t s t F > Stan# Coping *4 . Matol Cowntar Fleshing. loggia pointed up with Kappan Flashing Caaiaat. Motel losa Flashing to sxtond 4 la. on dock. Asphob Fait tainfarcing Flioc (saa ipariOcotlaal. Kappan IS lb. As. phob. Fab <al ia Kappan Stoop Alphatt to aitawl 4 iw. on lack. 5 and 6 in. Flawga Strips aa Ifoppan Tarred Fait iat ia OM Stylo Fttdi. Koppan baiH-ap loodng.* Noil lata Ftoshrng to Dacti wtth| I'/] in. lorbal tooling Noils. Noil* r ing Strips pro*idad whan nacassary. j aA Dock all typos. . loggia palatal up with ICappan Flashing Cataant. Matol Caaalar Flashing. Saal od alga at pKos with Koppan Flashing Caaiaat. 2 ply Koppan IS lb. Tar Soturatod Asbaitoi Fab sat in trawalings of Koppan Tor losa loot Caaiaat, or Mappsd in Koppan OM Stylo Filch. 2 ply Koppan Appro*ad Totrad Fab sat in trawalings at ICappan Tor lasa loot Caraant, or Mappad ia Kappan OM Stylo Fitch. Frisia with ICappan Concrata Friasing Oil (Coal tar basal. Coot antira sarfoca of Caaposllion losa Flashiag wbh o hoory trosraling of ICappan Tar lasa tool Cantant. T% ia. larbod loafing Nalls through Tin Disks on K> in. canton ntaaianiia. Koppan loibmp tooAag.. Haight Mod Not ancoad asghtaan (II) inchaa abora loaf Dock. 19 7s\ca Other flashings SPECIFICATIONS FOR FLASHINGS ON VENT PIPES, STACKS, FLAGPOLES, & OTHER PROJECTIONS All vent pipes. Macks, flagpoles, or other projections penetrat ing the built-up rooting, whether indicated on drawings or not. must have a proper metal sleeve flashing with flange, pan flash ing with flange or other flanged flashing installed. Behind metal sleeve and beneath roofing membrane neat to deck install metal pitch dam as shown in detail. The sheet metal flange must be cemented to the surface of the felt with a mopping of hot coal-tar pitch. Over flanga apply, with alternate moppings. 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 the second not less than six (6) inches. See detail, opposite page. 4S - SPECIFICATIONS FOR FLASHINGS ON STUB COLUMNS Exposed surface of all stub column projections must be pro tected with 3 plies of tarred roofing felt cemented on with a trowel application of flashing Cement. Felt is to be carried out onto the surface of the roofing felts so that the first extends not less than three (3) inches, the second not less than four (4) inches, and the third not less than five (3) 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 sur face 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 t 3) inches beyond the outer edge of the flange and the second not less than six (fit inches. See detail, opposite page. SPECIFICATIONS FOR FLASHINGS ON ROOF DRAINS The sheet metal flange furnished with the drain must be cemented to the surface of the felt with hot coal-tar pitch or flashing cement. Over the flange apply with alternate moppings or trowelings two (2) reinforcing plies of tarred felt so that the first extends not less than three (3) inches beyond the other edge of the flange, and the second not less than six (6) inches. Roof drains must be of a type provided with a wide lead or copper flange. Strainer construction should provide adjustment for meeting variations in roof level or slope. See detail, oppo site page. SPECIFICATIONS FOR FLASHINGS ON PITCH POCKETS FOR FUTURE COLUMNS. SIGN SUPPORTS. AND ANGLE IRONS At all locations where future columns, sign supports, and angle irons are to penetrate built-up roofing, pitch pockets are to be provided with a flanged metal pan. The sheet metal flange must be cemented to the surface of the felt with hot coal-tar pitch or flashing cement. Over the flange apply, with alternate moppings, 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 the second not less than six (6) inches. Fill metal pan with hot coal-tar pitch or flashing cement. Paint exposed sections of all reinforcing rods with dampproofing paint. See derail, opposite page. SPECIFICATIONS FOR CURB EXPANSION JOINTS Curb expansion joints are to be flashed in accordance with Koppers specifications for parapet walls and must provide nail ing to hold metal cap and flashing membrane in place. Metal cap must be designed to expand so as not to disturb flashing. See detail, opposite page.