Orange County NC Website
Browse       Search
<br />076200.3 – 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 />D. Cleat: Provide 20 oz. cold rolled copper cleat, 2″ wide min., formed to engage ¾″ and with length such <br />that horizontal leg can be turned over fasteners. Cleat shall be pre-tinned prior to installation with <br />flashings when soldering of the joints are required. <br /> <br />E. Termination bar: Use only membrane manufacturer-supplied aluminum or stainless steel termination <br />accessories, 1/8″ x 1″. Bar shall have pre-drilled slotted holes at 8″ o.c.. No plastic or polymer <br />termination bars will be accepted. <br /> <br />2.03 FASTENERS AND ACCESSORIES <br /> <br />A. Metal-to-metal fasteners: Where not specifically provided as a part of a pre-fabricated <br />assembly/system, provide self-tapping, self-drilling, no. 12 sheet metal screws. Use stainless steel <br />fasteners. Provide EPDM washers with exposed fasteners and coat fasteners to match color of adjacent <br />metal flashing. Fastener spacing: maximum 8" o.c. unless otherwise noted on drawings. <br /> <br />B. Metal to wood: No. 10, stainless steel wood screws. Minimum embedment shall be 1-1/2″. Where <br />exposed, screws must be stainless steel and have an EPDM washer. Fastener spacing: maximum 8" <br />o.c. unless otherwise noted on drawings. Copper fasteners are to be used in conjunction with copper <br />metal. <br /> <br />C. Metal to masonry or concrete: Use 1/4" diameter stainless steel masonry anchors, Rawl “Tapcon” or <br />approved substitute where not exposed. Drive-pin or powder-actuated fasteners must be approved by <br />the Designer to allow for consideration of potential damage to substrates. Minimum embedment shall <br />be 1". Where exposed, fasteners must be stainless steel and have EPDM washers. Exposed fasteners <br />must be coated to match color of adjacent metal flashing. Fastener spacing: maximum 12" on center <br />unless otherwise noted on drawings. <br /> <br />D. Pop Rivets (Stainless Steel): Shall be minimum 3/16" diameter with stainless steel mandrels and <br />washers. Copper pop rivets are to be used in conjunction with copper metal. <br /> <br />E. Pipe Clamps: Shall be stainless steel. <br /> <br />F. Sealant: For sealant in contact with metal, provide gun-grade butyl (concealed) or polyurethane- <br />based sealants (exposed), colors to be selected based on location of use. <br /> <br />G. Stainless steel (Gutter support): Shall be 16 gauge 304 stainless steel wrapped in copper or gutter <br />hanger and brackets shall be formed from minimum 3/16” copper bar. <br /> <br />H. Provide other flashing components and fasteners not specifically described, but required for a complete <br />and proper installation of the work and subject to the approval of the Engineer and/or the Owner’s <br />representative. <br /> <br /> <br /> <br /> <br /> <br /> <br />DocuSign Envelope ID: 89558C18-938A-4BFF-B14A-A2214E8AA5DD