The vent sleeve is another term for which roofing component?

• A. Collar.
• B. Chimney cap.
• C. Flashing.
• D. Ridge vent.

Answer: (A)

The key idea is understanding how a vent passes through a roof and is sealed. A vent sleeve is the through-roof piece that surrounds the vent pipe as it penetrates the roof deck. The ring around that pipe, sitting at the roof surface and integrated with the flashing, is called the collar. In practice, the vent sleeve and the collar refer to the same component: the ring that accommodates the vent pipe and provides a sealing surface for shingles and flashing to keep water out. This is distinct from a chimney cap (which sits on top of a chimney), ridge vent (which runs along the ridge), or generic flashing alone. So, the vent sleeve is another term for the collar.