Roof Leaking Around Vent Pipe

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.

Roof leaking around vent pipe.

If the collar is cracked or damaged it will need to be replaced. As mentioned there s a rubber boot that serves as a seal to prevent water from leaking in. Rusty and cracked vent pipe collars will allow the water to first pool around then seep through the interior walls of your home causing great damage. There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent.

You ll also be surprised to know that a lot of homeowners are at a loss as to why that area is leaking. In this video this old house general contractor tom silva shows how to create a watertight seal around a vent pipe. Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing. The rubber boot for the roof vent covers the hole and seals the gap around the pipe.

If you re one of them then you re not really surprised. Vent pipe leaks are very common and vent pipe flashing should be regularly inspected to prevent roof leaks. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. When your roof was installed each vent pipe received a flexible boot to seal water around the round surface of the vent pipe.

How to fix a leaking roof vent pipe flexible roof sealant apply flexible roof sealant black jack roof patch rubberized roof cement from a can or tube to fill holes gaps flashing and loose shingles around vent pipe. These boots vary in quality flexibility and longevity. It basically does the same job as the chimney flashing. This is further sealed with a sealant designed for roofs.

Roof leaks around vent pipes is relatively common. Cut away the old caulk from around the vent pipe. 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. Deterioration of the underlying metal flashing and roof cement around vent pipes is also a common occurrence.