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<br />075400.12 – THERMOPLASTIC SINGLE-PLY ROOF SYSTEM <br /> <br />Project Manual for Whitted Building Roof Replacement <br />Orange County, Hillsborough, NC <br />Prepared by Atlas Engineering, Inc., 551-A Pylon Drive – Raleigh, NC 27606 <br />May 2022 <br /> <br />to the warranting manufacturer. Provide a dedicated generator for seaming equipment. Mark and <br />patch area where automatic welder is stopped. <br /> <br />E. Once seam area has cured, probe the entire length of lap edge with an approved seam-probing tool <br />for voids or seam deficiencies. Repair deficiencies same day seam is probed. Perform destructive <br />testing of seams (peel tests) at the frequencies and test sizes required by the membrane <br />manufacturer. Repair test locations. <br /> <br />3.03 FLASHINGS <br /> <br />A. Install flashing membrane where shown on the drawing to provide watertight transitions at <br />perimeter details, transitions, and at items penetrating membrane in accordance with project <br />specifications and drawings and the manufacturer’s installation instructions. Confirm use of proper <br />flashing color to match the adjacent membrane. <br /> <br />B. Flashing membrane shall be fully adhered and fastened to penetration substrates, and heat-welded <br />to the adjacent membrane, as shown on the project drawings. Where adhered, flashing should be <br />installed in adhesive as shown on the drawings or required by the manufacturer, in sufficient <br />quantity to ensure total adhesion. Use substrate primers as recommended by the roof manufacturer. <br />If the manufacturer will not allow flashing to be adhered over bitumen residue, the contractor will <br />install a layer of plywood on the walls and to be included in their bid. <br /> <br />C. Secure the membrane at the base of expansion joints, wall transitions, curbs, etc. 8" on center, <br />unless otherwise noted on the detail drawings or specified by the membrane manufacturer. <br />Securement of the membrane perimeter to the deck is also acceptable. <br /> <br />D. Install “T” patches at all intersections. Install patches at all automatic welder “starts” and “stops” <br />(locations should be marked as seaming is being performed). <br /> <br />E. Clean all pipes, curbs, walls, and other existing substrates to remove debris and previous materials <br />prior to installation of new flashings. <br /> <br />F. Use pre-formed corners on all inside and outside corner flashings. <br /> <br />G. Vertical flashing shall be terminated a minimum of 8" above the roof surface. For flashing heights <br />lower than 8" the contractor must either make modifications to the existing penetration of transition <br />to allow for proper vertical flashing height or shall obtain written approval from the manufacturer <br />for review by the Engineer. <br /> <br />H. Flashing higher than 40″ will require supplemental securement installed in accordance with the <br />manufacturer’s requirements. <br /> <br />I. Probe and repair all seams between the flashing and the membrane the day of installation. Use <br />probing methods and tools recommended by the roof system manufacturer. <br /> <br />3.04 MEMBRANE PATCHES <br /> <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD