A lead flashing sleeve is crimped into the top of the pipe penetration and extends down over the pipe with a minimum one-inch clearance at the top and an eight-inch minimum height. The flashing base flange is set into roof cement over interply felt flashing and integrated with the single-ply roofing membrane. The roof assembly is supported by a one-quarter-inch DensDeck roof board and roof sheathing installed over structural framing.
PIPE PENETRATION SINGLE-PLY ROOFING 2 1/2 # LEAD FLASHING SLEEVE - CRIMP INTO PIPE. SET BASE FLANGE INTO ROOF CEMENT OVER INTERPLY FELT FLASHING, PER ROOFING MANUFACTURER'S SPECIFICATIONS MIN. 1" 8" MIN. 1/4" DENSDECK, INSTALL PER MANUFACTURER'S SPECIFICATIONS SHEATING, SEE STRUCTURAL DRAWINGS
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