Replace Roof Vent Pipe Seal

Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe.

Replace roof vent pipe seal.

Slide the replacement rubber gasket over the pipe and press it down tight to the flange. Roof jacks fit over plumbing vent pipes that protrude through the roof to keep them from leaking. Run a bead of silicone caulk around the vent pipe opening in the roof. To replace a damaged roof vent jack on your home.

Squirrels can damage the jacks by chewing on the soft lead covering to sharpen their teeth. Steps to replacing a roof vent jack. Works for any size pipe. Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket.

Use your cutters to trim the seal until it fits neatly over the old seal. Use the knife blade to scrape the pipe clean and smooth. Remove the plastic backing from the roofing membrane and slide it over the vent pipe and down onto the roof. Dry fit it in place and make sure everything lines up and looks good add tip ask question comment download.

Video turorial on how to change out a plumbing vent boot.