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B. Provide manufacturers recommended high density fiberboard, 1/2 inches thick, above <br />insulation where required by manufacturer to meet design requirements. <br />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 />