Laserfiche WebLink
evaporation rate provided by membrane manufacturer. <br /> N. Walkway Pad: Shall be walkway pad by manufacturer of membrane. <br /> O. Pre-Fabricated Expansion Joint: Shall be manufacturer's approved pre-fabricated <br /> expansion joint made with polyester reinforced membrane,neoprene foam and galvanized <br /> metal. <br /> P. Polymer Clad Metal: Refer to Section 07 62 00-Sheet Metal Flashing and Trim <br /> PART 3 EXECUTION <br /> 3.01 SUBSTRATE PREPARATION <br /> A. Verify that the substrate is dry, clean, smooth, and free of loose material, oil, grease, or <br /> other foreign matter. Sharp ridges and other projections and accumulations of bitumen <br /> shall be removed to ensure a smooth surface before roofing. <br /> B. Asphalt roofing substrates shall be removed, covered, or flashed using compatible, <br /> approved materials. PVC shall not come in contact with substrates containing asphalt <br /> materials. <br /> C. Any deteriorated substrate shall be repaired. <br /> D. Beginning installation means acceptance of prepared substrate. <br /> E. Provide necessary protection from adhesive vapors to prevent interaction with foamed <br /> plastic insulation. <br /> 3.02 MEMBRANE INSTALLATION(SCREWS AND PLATES) <br /> A. General <br /> 1. Membrane is to be attached with membrane fasteners and plates according to <br /> membrane manufacturer's requirements. <br /> 2. Membrane overlaps shall be shingled with the flow of water. <br /> 3. Full-width rolls of membrane shall be fastened perpendicular to the direction of <br /> the steel deck flutes. <br /> 4. Tack welding of membrane rolls for purposes of temporary restraint during <br /> installation is not permitted. <br /> B. Perimeter and Corner Areas <br /> 1. Over the properly installed and prepared substrate surface, half-width rolls (60" <br /> width) are to be installed either parallel or perpendicular to the entire perimeter <br /> edge. Membrane fasteners and plates are installed along the edge of the membrane <br /> on the fastening line six(6")inches on center. Plate is held back 1 inch from the <br /> outer edge of the membrane. The adjacent half-roll is positioned to overlap the <br /> fastened edge of the first half-roll by 5-1/2 inches in accordance with the overlap <br /> lines marked on the sheet's edge. The 5-1/2 inch overlap will allow the top <br /> membrane to extend 2-1/2 inches past the membrane fastener and plate for heat- <br /> welding. Fasteners shall clamp the membrane tightly to the substrate. In corner <br /> areas where perimeter half-rolls intersect, add rows spaced 54-1/2" on center of <br /> membrane fasteners and plates over the top of the half-rolls and weld a coverstrip <br /> above them for watertightness. <br /> Sebastian Corners Roof Replacement 07 54 00-6 Thermoplastic Single Ply Roofing <br />