Prepare the roof vent pipe by removing up to three courses of shingles above the existing pipe flashing to ensure that the back flange is covered by the shingles. Also, remove and discard the exist- ing pipe flashing and any old roof cement. Apply roofing cement around the pipe and underlay- ment, as it penetrates the roof to create a weather-tight seal. If necessary, install new shin- gles up to the pipe penetration
and notch shingles around the plumbing pipe.
Remove the protective plastic layer (if painted Pipe Boot), then place Pipe Boot next to the plumb- ing pipe and visually check pitch alignment. If pitch adjustment is needed, pinch the front corners to increase the pitch or push down on the front of the Pipe Boot to decrease the pitch until plumb. Note: The plumbing pipe should extend 2 to 3 inches above the base sleeve to allow for proper roof expansion and contraction. Pipe Boot base sizes are available in both standard and high-pitch sizes (3/12 – 14/12) should a custom fit be needed.
Next, apply a bead of a polyurethane sealant on the rim of the plumbing pipe.
Place Pipe Boot over the plumb- ing pipe, seating the patented TightLOCK top on to the pipe. Turn the TightLOCK Top clockwise 1/8 inch to ensure that it is secure. Nail the base to the roof using the embossed guides and install two nails into flange on the back of the base. Continue installing the shingles, lapping them over the side and back flanges (notching the shin- gles as required). Apply a bead of sealant to the exposed nail heads on the base. For venting pipes that are 15 to 24 inches tall, an optional
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