! j I I - National Roofing Contractors Association

.,."in method of application including hot-roofing asphalt, torch-welding, cold adhesives and self-adhesion. Membranes are lapped 3 inches on theside and 6 inches on the end. The cap sheet is surfaced with granules to provide a finished surface on application.B.T.L. Weatherproofing Systems Inc., a joint venture company fonned by Vedag GMBH of West Gennanyand the Building MaterialsDivision of Bakelite Thennosets Limited of Canada. Contact Tri-R Products, in Detroit, Mich. at (313) 545-8888 or B.T.L WeatherproofingSystems Inc. in Montreal, Quebec, Canada at (514) 364-5224 and Toronto, Ontario, Canada at (416) 89().4800 (1-800-387-9598 from U.S.).6. BunER MANUPACIURJNG COMPANYMR-24 is factory prepunched and is applied only to prepunched- faced or field~rilled structurals. A layer of faced blanket insulation is placedbetween the purlins and MR-24 for energy conservation and to eliminate condensation.CMR-24 utilizes a continuous corrugated metal liner panel (decking) with rigid insulation board and the double lock standing seam roofsystem (MR-24). CMR-24 is factory prepunched and is applied only to prepunched or field~rilled structures. A vapor retarder is placedbetween the corrugated liner and the rigid board insulation.7.~Built-up roofing specs: All Celotex built-up roofing specs are now published with prefIX letters AGS (e.g., AGS-4-C-G) indicating use of Celo-Glass AGS Ply Sheet, a premium glass ply sheet with properties exceeding ASfM D-2178 Type VI and NBS-BSS #55 recommendations. Useof Celotex Celo-Glass AGS Ply Sheet is required to qualify for Celotex .Specification. Warranty. Celotex APP and Celotex SBS modifiedbitumen products exceed the tensile strength recommendations of NBS-BSS #55.Celotex also has available cold process modified bitumen systems using Celotex SBS mineral surface cap sheet with SBS modified bitumenadhesive.8. a>Ol.EY ROOFINGFiberboard may be used for certain applications. Contact CRSI for further infonnation..r9. DERMABrr WAmRPROOPING INc.DWI roofing and waterproofing modified bitumen membranes are manufactured using state-of-the-art technology. DWI membranes co:1sistof two plies of APP or SBS modified asphalt reinforced with a one-ply polyester mat. All APP products are sold under the Dennabit name.SBS products are sold under the Elasphalt name. The product number designates the thickness of the membrane and weight of the reinforcingmat. Thus 4170 would indicate a 4mm membrane with a 170 gram polyester mat.DWI also manufactures and sells on a special-order basis self-adhering modified bitumen peel and stick as well as membranes with differentthicknesses, ranging from 1mm to 5mm, different types of reinforcements, such as fiberglass, fleece, or polyester film or any combination of theabove, depending upon the application requirement.DWI membranes can be torched, hot applied, cold applied, or self-adhered to all roof decks, including metal, wood, or concrete. All DWImembranes need to be applied over an asphalt-saturated base sheet or asphalt base primer. Specification manuals can be ordered free of chargeby calling Roger Wood at 1-800-533-7394.All Dennabit and Elasphalt 4170 series modified bitumen membranes have successfully passed material tests conducted by UnderwritersLaboratories (UL) and Factory Mutual (PM). Please refer to the appropriate UL and PM guide manuals for specific designs and ratin~.10. Dm~ USADibiten modified bitumen roofing membranes are APP modified bitumen bonded to a tough, resilient nonwoven polyester core material. Theyare available in both smooth-surfaced (Dibiten Poly /4 and Dibiten Poly/5) and slate flake-finished (Dibiten Poly /4.5 Granular) varieties. Surfacecolor for Dibiten Poly/4 and Dibiten Poly/5 is black; Dibiten Poly/4.5 Granular is available in a wide range of colors. Also available is DibitenBlack Granite surfaced with fine black slag particles. All the Dibiten APP products are torch applied. Dibiten modified bitumen membranesare well suited for most types of roofing applications, and the smooth surfaced membrane is used in a variety of waterproofing applications aswell. Dibiten USA recommends their specifications manual be consulted for application requirements and details prior to application of product.Specifications are available for single- or double-layer applications. Some specifications require application of roof coatin~. UL-listedspecifications may be obtained by consulting the most current edition of the Dibiten USA specifications manual, and, because these specificationsare subject to continuous change, the technical department should be consulted for verification of current status. Dibiten membranes have beenused successfully in Europe since the late '60s, and in the U.S. since 1978. Dibiten USA encourages technical inquiries at their toll free numbers:1-800-DIBITEN (U.S.), 1-800-367-8315 (California), or 1-800-527-1123 (Canada).-."1'217