Exhaust Vent Roof Leak

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.

Exhaust vent roof leak.

Sun exposure and heat especially during the summer can cause the rubber boot to crack creating the space for water to leak in. Roof vents are made from different materials. I thought it was a roof leak too until i stuck my finger into the piping inside the exhaust unit and there was a pool of water inside. A roof that leaks around a vent pipe is a common cause of small water stains on a ceiling or water leaking into a home.

Most vents have an integrated base flashing typically made. 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. If your turbine vent is in good condition turns properly and has no missing fins the leak may be occurring around the base of the vent. These boots vary in quality flexibility and longevity.

These collars consist of a metal base generally made out of aluminum and a rubber boot integrated into the top of the collar. Years ago the bathroom exhaust started dripping water. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. Damaged vent pipe collars typically v ent pipe leaks occur at the collar surrounding the base of the vent pipe where it breaks through the surface of the roofing material.

I went into our attic which unfortunately is so short you have to crawl like a crab in there and noticed that the bathroom exhaust vent vented into the attic. Use the knife blade to scrape the pipe clean and smooth. Steps for fixing a leaking rooftop vent pipe. Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.

Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe. Fix a leaky roof vent pipe with a oatey rubber gasket. When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.