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THERMOPLASTIC MEMBRANE <br />ROOFING - ADHERED <br />Section 07541 <br />15-1207 <br />Sarnafil's representative. One inch (25 mm) wide cross-section samples of welded seams <br />shall be taken at least three times a day. Correct welds display failure from shearing of <br />the membrane prior to separation of the weld. Each test cut shall be patched by the <br />Applicator at no extra cost to the Owner. <br />3.10 MEMBRANE FLASHINGS <br />All flashings shall be installed concurrently with the roof membrane as the job progresses. <br />No temporary flashings shall be allowed without the prior written approval of the Owner's <br />Representative and Sika Sarnafil. Approval shall only be for specific locations on specific <br />dates. If any water is allowed to enter under the newly completed roofing, the affected area <br />shall be removed and replaced at the Applicator's expense. Flashing shall be adhered to <br />compatible, dry, smooth, and solvent -resistant surfaces. Use caution to ensure adhesive <br />fumes are not drawn into the building. <br />Follow manufacturer's current recommendations for proper installation. <br />Consult Sika Sarnafil Technical Department for securement methods. <br />3.11 METAL FLASHINGS <br />A. Metal details, fabrication practices and installation methods shall conform to the applicable <br />requirements of the following: <br />1. Factory Mutual Loss Prevention Data Sheet 1-49 (latest issue). <br />2. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - <br />latest issue. <br />B. Metal, other than that provided by Sika Sarnafil, is not covered under the Sika Sarnafil <br />warranty. <br />C. Complete all metal work in conjunction with roofing and flashings so that a watertight <br />condition exists daily. <br />D. Metal shall be installed to provide adequate resistance to bending to allow for normal thermal <br />expansion and contraction. <br />E. Metal joints shall be watertight. <br />F. Metal flashings shall be securely fastened into solid wood blocking. Fasteners shall <br />penetrate the wood nailer a minimum of 1 inch (25 mm). <br />G. Airtight and continuous metal hook strips are required behind metal fascias. Hook strips are <br />to be fastened 12 inches (0.3 m) on center into the wood nailer or masonry wall. <br />H. Counter flashings shall overlap base flashings at least 4 inches (100 mm). <br />Hook strips shall extend past wood hailers over wall surfaces by 1-1/2 inch (38 mm) minimum <br />and shall be securely sealed from air entry. <br />22 <br />