Use the knife blade to scrape the pipe clean and smooth.
How to seal roof pipe.
Slip a proper sized flashing on.
Ensure it drapes like a woman s dress over the old flashing.
Remove the nails that hold the vent pipe flashing to the roof.
Apply a generous bead of roofing sealant around the base of the pipe with the caulking gun.
Use the knife blade to scrape the pipe clean and smooth.
You can do this by running a putty knife across 10 inches of the top row.
Step 3 slide the rubber boot over the pipe.
Apply a thick bead of lap seal caulk around the seam.
You need to do this in.
Cut the pvc pipe just below the elbow.
There may be nails positioned underneath the shingles across the top row.
Cut away the old caulk from around the vent pipe.
Insert the putty knife under the corner of the flashing where it is nailed to the roof to protect the shingles.
Add a bead of sealant on the traced line on the roof.
How to seal a plumbing vent pipe on the roof 1.
Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe.
Here s how to seal around a vent pipe by replacing them.
Some nails will be near the bottom of the pipe others.
Steps for fixing a leaking rooftop vent pipe.
Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket.