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<br />076200.5 – FLASHING AND SHEET METAL <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 /> <br />B. Confirm that proper installation of roof system components, in accordance with Section 075400 <br />have been completed prior to installation of metal flashings. <br /> <br />C. Proceed with installation only after unsatisfactory conditions have been corrected. <br /> <br />3.04 EDGE METAL <br /> <br />A. Leave a 1/4″ gap between edge metal sections. Install backup plate at joints as recommended in <br />the most recent edition of SMACNA due to coping width. Install two rows of sealant on both sides <br />of the gap. Nail the cover plate to the nailer through the gap in the metal. <br /> <br />B. Secure flanges of edge metal with appropriate fastener at 3″ o.c. Fasteners shall be staggered in <br />two rows with the first rob positioned 1″ from the leading edge of the flange; the second row shall <br />be positioned 1″ from the first row. <br /> <br />C. Form a continuous cleat at the outside of the wall to provide an even edge. Face secure the support <br />cleat at 8″ o.c. within 8 feet of the corner and 12" on center elsewhere. Cleat joints shall coincide <br />with wall expansion joints. <br /> <br />D. Install membrane over top over edge to cover continuous cleat and nails as shown on the drawings. <br /> <br />E. Crimp along cleat at a minimum of 12" o.c. Crimp so that metal is not touching the membrane <br />flashing. <br /> <br />3.05 COUNTERFLASHING INSTALLATION <br /> <br />A. For reglet mounted counterflashing, cut reglet in the existing masonry wall at locations shown on <br />the drawings. Install 2" lead wedges at 12" on center to secure counterflashing. Install sealant <br />along the top of the counterflashing. <br /> <br />B. For surface mounted counterflashing securement, fasten in accordance with the detail drawings. <br /> <br />C. The bottom of the counterflashing shall extend below the adjacent membrane termination bar a <br />minimum of 3", but shall in no case touch the surface of the roof membrane. If vertical flashing <br />terminates, extend counterflashing 6" along wall or around corners as needed to properly cover <br />termination flashings, unless otherwise agreed upon. <br /> <br />D. Secure counterflashings to existing through-wall flashing receivers, existing curbed unit caps, new <br />cut reglets, or at other locations as shown on the drawings. <br /> <br />E. Lap counterflashing joints a minimum of 3"; stagger joints in clamping/termination bar from <br />counterflashing joint by 3’ minimum. <br /> <br />F. Apply sealant between flat surface of counterflashing and receivers, walls, curbs, etc. prior to <br />securing. <br /> <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD