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5 <br /> i flURir/ - •� - PRODUCT DATA SHEET <br /> I��I� THE WORLD'S BEST ROOFS <br /> DURO-LAST® TORCH DOWN VAPOR BARRIER <br /> DESCRIPTION: <br /> Duro-Last®Torch Down Vapor Barrier(DL-TD-VB) is <br /> an SBS modified bitumen base ply for use in Duro- <br /> Last Roofing Systems. DL-TD-VB is composed of a 11-1M W <br /> proprietary formulation of elastomeric styrene- ,� , c) <br /> butadiene-styrene polymer modified bitumen and is W <br /> reinforced with a high quality random glass fiber � > <br /> mat. The topside is surfaced with fine mineral LA cr.) <br /> aggregate and the underside is surfaced with =- - ^� o <br /> LL <br /> polyolefin burn-off film to optimize heat welding. �J <br /> DL-TD-VB can be used within a Duro-Last Roofing 4 II-W <br /> System to minimize vapor transmission. Duro-Last r U <br /> recommends the use of vapor barriers, however it is ( `----' <br /> the responsibility of the Duro-Last contractor of <br /> record to ensure that all applicable specifications, <br /> building codes, regulations and ordinances are <br /> complied with and followed. A roofing professional, <br /> such as a consultant or architect, should be utilized • Structural Concrete (cast in place or precast) <br /> for correct roofing system design prior to installing <br /> any roofing system. • Gypsum (cast in place or precast) <br /> • Lightweight Concrete (insulating or cellular) <br /> BENEFITS • Wood (Plywood, OSB or Lumber) <br /> • Self-sealing • Cement Block/Masonry <br /> • Slip resistant <br /> APPROVED DIRECT-CONTACT ASSEMBLIES <br /> • Substrate board not required for most <br /> applications The following membrane assemblies are approved <br /> for direct contact with the DL-TD-VB. All other <br /> • Puncture resistant assemblies must be separated from the DL-TD-VB <br /> • No primer required on steel decks or within by any Duro-Last slip sheet, insulation or cover <br /> mechanically fastened roof systems. board. <br /> • Ideal for mechanically fastened or adhered • Duro-Fleece®and Duro-Fleece Plus® <br /> roofing systems <br /> oAdhered directly to DL-TD-VB with Duro-Fleece <br /> • Resistant to work crew traffic CR-20 Membrane Adhesive (Splatter). <br /> ACCEPTABLE SUBSTRATES: WB II Adhesive is not allowed. <br /> Prior to installation of the DL-TD-VB, the substrate FACTORY MUTUAL REQUIREMENTS <br /> must be smooth and level without significant surface Factory Mutual projects that require DL-TD-VB will <br /> irregularities or depressions. It must be clean, dry require an increase in the preliminary attachment of <br /> and free of grease, dust and loose debris. Do not insulation and/or cover boards underneath <br /> apply to wet or damp surfaces. Concrete and mechanically fastened roofing systems. Each board <br /> gypsum decks must be cured prior to installation. must be fastened at a rate of one fastener and plate <br /> The installing contractor is responsible for following per two square feet. Corner and perimeter <br /> applicable building, plumbing and electrical codes. enhancements are not required for preliminary <br /> DL-TD-VB Primer is not required when the roof attachment. <br /> system is mechanically fastened or when the ORDERING: <br /> substrate is a steel deck. When used within an Rolls may be ordered individually. Each roll <br /> adhered roof system, the following substrates will measures 3.25 ft. by 49 ft. and will cover 147 square <br /> require the use of DL-TD-VB Primer prior to feet with a 3-inch overlap. <br /> installing DL-TD-VB: <br /> • 101-lb roll (Item#1347) <br /> • <br /> www.duro-last.com =- 800-248-0280 <br /> Duro-Last,Duro-Fleece,Duro-Fleece Plus,Duro-Tuff and"World's Best Roof are registered trademarks owned by Duro-Last,Inc. <br /> Created:01/17/2018 Revised:08/27/2018 <br />