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2.06 FLEXIBLE FLASHING <br /> A. Manufacturer's recommended modified bitumen flashing. <br /> 2.07 ACCESSORIES <br /> A. Roofing Nails: Galvanized or non-ferrous type and size as required to suit application. <br /> B. Pressure Relieving Vents: Plastic or Metal one-way valves. Provide vents in accordance with <br /> manufacturer's recommendations. <br /> C. Mechanical Fasteners for Insulation: Manufacturer's recommended fasteners and as required <br /> to meet FM 1-90 requirements. <br /> D. Traffic Surfacing: Manufacturer's standard cap sheet of a color contrasting. Provide traffic <br /> surfacing from point of access to roof to roof installed equipment, and each side of roof installed <br /> equipment <br /> PART 3 -- EXECUTION <br /> 3.01 EXAMINATION <br /> A. Verify deck surface is dry, sound, clean and smooth, free of depressions, waves, or <br /> projections, properly sloped to gutter. <br /> B. Beginning of installation means acceptance of the surface of the substrates. <br /> 3.02 PROTECTION <br /> A. Protect building surfaces against damage from roofing work. <br /> B. Where work must continue over finished roof membrane, protect surfaces. <br /> 3.03 INSULATION APPLICATION <br /> A. For structural concrete decks, prime deck surface with Asphalt/Concrete Primer then embed <br /> in a 25 pound per square (plus orminus 20%) mopping of ASTM Type III asphalt, two layers of <br /> insulation in accordance with manufacturer's instructions. Lay second layer of insulation with <br /> joints staggered from first layer. <br /> B. Lay insulation boards with tightly butted, staggered joints. Cut insulation to fit neatly to <br /> perimeter blocking and around protrusions through roof. <br /> C. Install no more insulation than can be properly covered by the end of the each day with <br /> roofing membrane. <br /> 3.04 MEMBRANE APPLICATION <br /> A. Install glass fiber ply sheets and modified bitumen sheets and flashing in accordance with <br /> manufacturer's instructions. <br /> B. Prime all masonry and metal surfaces with GAF Asphalt/Concrete Primer and allow to dry <br /> thoroughly. <br /> C. Asphalt should be heated so that felts are installed with the asphalt within its equiviscous <br /> temperature range.Mop applied sheets must be installed with ASTMD 312, Type III asphalt at a <br /> minimum temperature of 400 degrees Fahrenheit, at the point of application, with a target <br /> temperature of 425 degrees Fahrenheit, or 20 degrees Fahrenheit above the EVT, whichever is <br /> higher. The maximum allowable asphalt temperature, in the kettle, is 500 degrees Fahrenheit. <br /> Heat the asphalt in accordance with the manufacturer's instructions. <br /> D. Install glass fiber ply sheets using Type III asphalt at a rate of 25 pounds per square (plus or <br /> minus 20%). <br /> E. Install membrane by solidly mopping in 25 pounds per square (plus or minus 20%) of asphalt <br /> to base. <br /> F. Apply glass fiber ply sheets and membrane smoothly without wrinkles, fishmouths or tears. <br /> Provide membrane side laps of 4 inches and 6 inch end laps. Side and end laps should have <br /> 1/4 inch minimum flow out of bitumen. <br /> G. Extend glass fiber ply sheets and membranes 2 inches past the top of the cants onto vertical <br /> surfaces. <br /> H. When inclement weather is expected, install a water cut-off at the end of the day's operation. <br />