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6. Various sheet metal sections shall be uniform with corners, joints and angles <br />mitered, sealed and secured. <br />7. Exposed edges shall be returned (hemmed); both for strength and appearance, <br />and sheet metal shall be fitted closely and neatly. <br />8. Provide cleats or stiffeners and other reinforcements to make all sections rigid <br />and substantial. <br />9. Sheet metal shall be fabricated, supported, cleated, fastened and joined to prevent <br />warping, "oil canning", and buckling. <br />10. All sheet metal details shall provide for redundancy including but not limited to <br />sheet metal underlayment and/or sealants. This secondary protection shall be <br />installed, sealed and lapped to ensure a redundant layer of protection will shed <br />moisture infiltration in the sheet metal fails. <br />B. Sheet Metal Underlayment: <br />1. Fully adhere to substrates where indicated in Contract Drawings. <br />2. Lap adjoining sections a minimum of 3" and fully adhere. . <br />3. Shall extend beyond wood blocking a minimum of 1 " at roof edges and parapet <br />walls. <br />4. At roof edges and parapet walls, sheet metal underlayment shall be installed <br />concurrently with roof membrane and flashing installation. Temporary weather <br />protection utilizing other materials is not acceptable when sheet metal <br />underlayment is specified. <br />C. Fasteners: Shall be size and type required by Florida Product Approval or NOA. <br />1. All fasteners to be rust resistant and compatible with materials to be joined. <br />2. All exposed fasteners shall be stainless steel screws with washers fastened <br />through 5/16" predrilled oversized holes. <br />3. All exposed fasteners into concrete or masonry shall be metal based expansion <br />anchor with stainless steel pin with washers fastened through 11/32" predrilled <br />oversized holes. <br />4. All exposed fasteners shall have factory painted heads to match the sheet metal <br />color. <br />5. Exposed horizontal surface fasteners are not acceptable. <br />D. Soil Pipe <br />1. Provide Prefabricated Pipe Penetration Flashing as shown in detail drawing with <br />a 4" minimum flange. <br />2. Set flange in a full bed of roofing cement over base ply and strip in as specified. <br />3. Provide separate flashing cap extending a minimum of 1" down inside pipe, and <br />a minimum of 3" down outside the pipe. <br />4. Clean and solder all seams. <br />E. Elevation Wall Stucco Stop Counterflashing <br />1. Fabricate counterflashing as shown in detail drawings in 10' lengths. <br />2. Carefully bend existing stucco stop out of the way for reroofing. <br />3. Install counterflashing as indicated in detail drawings and secure to existing <br />stucco stop 12 inches on center. <br />4. Counterflashing shall extend a minimum of 1.5 inches below base flashing <br />termination. <br />Indian River County West WWTP <br />Roof Replacement 07 62 00-5 Sheet Metal Flashing and Trim <br />