How To Seal Leaky Roof Vent

Apply a thick bead of lap seal caulk around the seam.

How to seal leaky roof vent.

A code lead jack is going to be much better because it has a much larger base to it which sits flat on the roof. Start by removing the old lead jack and removing shingles around it. Fix a leaky roof vent pipe with a oatey rubber gasket. Bring a leaky roof vent up to code.

Given the most common causes is cracked or damaged rubber boot the most ideal solution is to remove it and replaced it with a new one. A bad lead jack becomes a leaky roof vent because it starts to dry rot in the sun. See below for a shopping list and tools subscribe to. Use the knife blade to scrape the pipe clean and smooth.

Install a code lead jack in its place. Place the nozzle of the caulk tube at a point where the vent and roofing material meet. Squeeze the trigger of the gun while simultaneously pulling it slowly along the seam and pushing down firmly. For this it is better to hire a professional roofer to handle the work.

Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. When the roof vent is leaking the actual cause must be identified first. This old house general contractor tom silva shows how to create a watertight seal around a vent pipe.