Install a code lead jack in its place.
How to seal leaky roof vent.
Fix a leaky roof vent pipe with a oatey rubber gasket.
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Bring a leaky roof vent up to code.
When the roof vent is leaking the actual cause must be identified first.
Place the nozzle of the caulk tube at a point where the vent and roofing material meet.
A bad lead jack becomes a leaky roof vent because it starts to dry rot in the sun.
And it shrinks and moves and loses that seal that was causing it to be waterproof.
This old house general contractor tom silva shows how to create a watertight seal around a vent pipe.
Cut away the old caulk from around the vent pipe.
Start by removing the old lead jack and removing shingles around it.
Apply a thick bead of lap seal caulk around the seam.
Use the knife blade to scrape the pipe clean and smooth.
For this it is better to hire a professional roofer to handle the work.
Steps for fixing a leaking rooftop vent pipe.
Squeeze the trigger of the gun while simultaneously pulling it slowly along the seam and pushing down firmly.