Laserfiche WebLink
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 ASTM D 312, Type III asphalt <br />at a minimum temperature of 400 degrees Fahrenheit, at the point of application, with a <br />target temperature of 425 degrees Fahrenheit, or 20 degrees Fahrenheit above the EVT, <br />whichever is higher. The maximum allowable asphalt temperature, in the kettle, is 500 <br />degrees Fahrenheit. 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 />Mop three plies of base sheets and one ply of membrane. Install cut -off at all exposed edges <br />of roofing and at roof penetrations. Remove water cut -off upon resumption of work. <br />3.05 TRAFFIC SURFACING <br />A. Using maximum 10' lengths of the cap sheet membrane solidly mop one ply of smooth <br />membrane and one surfaced membrane to the surface of the applied roof. Allow 6 " -12" <br />openings between adjacent sheets for drainage. <br />3.06 FLASHING <br />A. Install flashing according to Manufacturer's specifications. <br />B. Install one pressure relief vent per 1,000 square feet, or part thereof, of roof surface. <br />C. Seal flashing and flanges on all items setting on or protruding through the membrane. Seal <br />flanges between two plies of membrane. <br />3.07 FIELD QUALITY CONTROL <br />A. Inspection and testing will be performed by a Professional Engineering firm or manufacturer's <br />representative approved by the Engineer. <br />B. Correct defects and irregularities reported. <br />30048-005:812,312012 07510 -5 North Olmsted Phase 2 <br />