DuraVent FasNSeal Variable Pitch Roof Flashing: seals the vent opening on flat or sloped roofs
The DuraVent FasNSeal Variable Pitch Roof Flashing is a cover that seals the opening where a vent passes through the roof. It fits roofs from flat up to a 9 in 12 pitch. Its upper edge tucks beneath the roofing above the vent, while its lower edge overlaps the roofing below. Choose a size from 3 to 16 inch on this page to match your vent. For a single wall run, DuraVent requires two separate parts: a roof jack inside the flashing and a storm collar above it. The collar closes the gap around the pipe.
FasNSeal is DuraVent’s stainless steel vent for high efficiency gas boilers, furnaces, and water heaters, built to carry pressurized exhaust and its acidic condensate outside. The vent must finish at least 2 feet above the roof line and higher than any wall within 8 feet. A vent standing more than 6 feet above the roof needs extra support. Have a double wall vent? See the DuraVent FasNSeal Variable Pitch Roof Flashing for W2. The DuraVent FasNSeal Variable Pitch Roof Flashing ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.








Commercial projects may require custom parts and unique system designs. Duravent offers complete project assistance:








































