Fix Roof Vent Pipe Leak

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.

Fix roof vent pipe leak. They can be several feet above the leak or to the right or left of it. When this happens vents can spring leaks. Typically vent pipe leaks occur at the collar surrounding the base of the vent pipe where it breaks through the surface of the roofing material. Fix a leaky roof vent pipe with a oatey rubber gasket.

There are many possible parts of the roof potentially leaking but one of the most common ones is the area around the roof vent. This is especially true if you can t seem to pinpoint the source of the leak. The collar s job is to create a tight seal keeping rainwater and debris from getting into your attic. Best way to fix a leaking roof vent pipe this video shows the installation of a perma boot on a residential roof.

Steps for fixing a leaking rooftop vent pipe. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. This old house general contractor tom silva shows how to create a watertight seal around a vent pipe. These collars consist of a metal base generally made out of aluminum and a rubber boot integrated into the top of the collar.

You re in luck if you re able to pinpoint the source. Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket. See below for a shopping list and tools subscribe to. Roof leaks around vent pipes is relatively common.

If left unchecked the water that seeps in can eventually cause mold and structural damage to your home. This is not to say that it s not going to be a problem. For example in a lot of cases it could be from around the roof vent pipes. 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.

Use the knife blade to scrape the pipe clean and smooth. If you have attic access the easiest way to track down a leak is to go up there with a flashlight and look for the evidence. Penetrations can include plumbing and roof vents chimneys dormers or anything else that projects through the roof.