Roof Exhaust Vent Leak

This is why roofers add a flashing to the vent cap.

Roof exhaust vent leak.

Steps for fixing a leaking rooftop vent pipe. You have to understand that the vent is installed by making a hole in the roof. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. Cut away the old caulk from around the vent pipe.

A handyman could likely replace the cap be sure to ask before having one come out. Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing. Sounds like the leak is where the exhaust pipe penatrates the roof. Even if you created a hole that s of the perfect size for the vent pipe there will still be gaps around the pipe.

Roof vent pipes from plumbing or exhaust vents penetrate the roof and are usually sealed using a collar style flashing made out of a flexible material like epdm rubber or flexible pvc. Fix a leaky roof vent pipe with a oatey rubber gasket. These boots vary in quality flexibility and longevity. There s an issue with the flashing for the vent cap.

A roofer would be a sure bet to repair replace whatever it is. Use the knife blade to scrape the pipe clean and smooth. Leaking roof vent pipe roof vent pipes are common areas for roof leaks. The roof vent pipe is installed cut through the roof and around the pipe attached to the roof is surrounded with rubber boot as insulation for the gap between the pipe and roof.

Roof vents are made from different materials. The leaking may first be seen in the attic but if you don t catch it right away you may see water coming into the house dripping on the floor. When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.