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