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Attic vent pipe leak.
First of all going from 3 in.
Dealing with a leak around the roof vent pipes can be a huge problem as well.
Fix a leaky roof vent pipe with a oatey rubber gasket.
We had assembled the exhaust vent pipes using pvc pipe that goes up through the ceiling and on into the attic where it connects via a y pipe to the main vent pipe going out to the roof.
You ll also be surprised to know that a lot of homeowners are at a loss as to why that area is leaking.
Roof leaks around vent pipes is relatively common.
Steps for fixing a leaking rooftop vent pipe.
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.
Attic condensation is due to humid air leaking or vented into the attic.
You re also in luck because this article is going to help you a lot.
Vent pipes penetrate all the way through the roof in several locations of the house and each one needs to be maintained to keep water out.
Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe.
Sometimes vents like this had to be.
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.
Transition coupling either plastic like this or banded rubber to join a 3 in.
Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket.
Cut away the old caulk from around the vent pipe.
Vent pipe leaks during heavy rain can occur if you have cracks in your vent pipe boot or flashing.
Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem.
Someone took a shortcut.
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.
Use the knife blade to scrape the pipe clean and smooth.
Is unusual although it may be required by your local plumbing code.