Adjustable multi-size flashing fits 1-1/4" – 4". Tested for ultraviolet, ozone and weather resistance. Elastomer collar heat tested to 180°F. Approved for type “B” installations
SKU 81942 - 12″ x 16″ Base for 1/4″, 1/2″, 2′, 3″ or 4″ Vent Pipe - Model: CB41 - 5 units per case
1. Select appropriate size flashing for each vent pipethrough roof. Seal the underside of the flashing asshown below.
2. Install flexible collar* over pipe.
3. Push down until base lies flush on rooftop.
4. Nail flashing only where future courses of shingles willcover.
5. Shingle around the bubble of the flashing (cuttingwhere necessary so all shingles are flat on the roof).The shingles should be installed at least halfway downthe flashing base so there are no exposed nail heads.
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