Fixing Leaky Roof Vents

Across the joists lay a.

Fixing leaky roof vents. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. Find the water entry point. You may have to remove damaged sections of pipe too. The immediate thing to do is to contain dripping water from the leak.

Replace the rubber boot if it has split and redo any sealing with more caulk. Use the knife blade to scrape the pipe clean and smooth. The water entry point may not always the same as where the water drips. Recaulk the corner flashing if any areas have hardened caulk.

Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk. Cut away the old caulk from around the vent pipe. Steps for fixing a leaking rooftop vent pipe. Replace any missing or rotted siding above the step flashing on dormers.

Replace these if you re able and add a little pipe sealant to the seams when you screw a new section of pipe into place. Apply a thick bead of lap seal caulk around the seam. Make a temporary patch.