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IRC-1838 Indian River County Main Library Roof Replacement 07 62 00-5 Sheet Metal Flashing and Trim 2. Slip flashing shall extend a minimum of 2 inches below base flashing termination and shall fit tightly against curb. 3. Secure slip flashing 12” on center of a minimum of two fasteners per side of the curb. 4. Notch and lap ends of adjoining sections not less than 4”; apply sealant tape between sections. 5. Lap miters at corners a minimum of 1 inch and apply sealant between laps. Rivet at 2” on center. E. Multiple Pipe Penetration 1. Fabricate pitch pan, pipe enclosure flashing, and closure cap as shown in detail drawings. Refer to SMACNA Architectural Sheet Metal Manual Figure 8-8B or 8- 9A depending upon direction of pipes. 2. Size pitch pan minimum 2" larger than the penetration on all sides. Provide a 4" minimum flange and double walls with minimum depth of 6". 3. Set flange of pitch pan in full bead of roof cement and strip-in flange of metal edge as specified. 4. Install 2" wide aluminum tape around all sides of pitch pan extending 1/2" above top edge. 5. Fill pitch pan with non-shrink grout to a depth of 2" from the top of the tape. 6. Fill pitch pan with pourable sealer to the top of the tape. Slope to shed water. 7. Secure pipe enclosure flashing and cap as indicated in detail drawings. 8. Clean and solder all seams. F. Base Flashing Closure 1. Install new closures where base flashings abruptly end. 2. Completely solder or seal all joints to be watertight. 3. Install closures over membrane and under finish ply of base flashing. 4. Extend closures up under counterflashings or copings. 5. Install closures to completely seal ends of base flashings, membrane and cants as well as end joints of edge metal. 3.3 CLEANING AND PROTECTION A. All sheet metal work shall be thoroughly cleaned of all asphalt, scrapes and dust. B. Scratches through the metal finish shall be replaced to the Owner’s satisfaction. END OF SECTION 07 62 00