How To Repair Roof Leak Vent Flashing

Pull or cut off any nails.

How to repair roof leak vent flashing.

Cut away the old caulk from around the vent pipe. When applying the cement you want to apply a very liberal quantity. To replace flashing around the vent pipe first remove the shingles covering the flange at the back and sides. Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket.

Flexible roof sealant apply flexible roof sealant black jack roof patch rubberized roof cement from a can or tube to fill holes gaps flashing and loose shingles around roof vent new vent shingles replace worn out roof vent with a new one and shingle around it to provide a better roof leak repair. Slide the new flashing over the vent pipe and under the shingles above the pipe. Recaulk the corner flashing if any areas have hardened caulk. Replace any missing or rotted siding above the step flashing on dormers.

Of course you don t want cement oozing all over your roof but you do want to ensure a strong seal. Replace the shingles and cover the nail heads with roofing cement. Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk. Use the knife blade to scrape the pipe clean and smooth.

Then run a second bead of caulk just below the first bead. Purchase the cement in a tube that will fit your caulk gun. Once you ve located the leak you can get to work. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.

Pry and lift off the flashing. If you simply purchase the right materials you ll have to look for instructions online. If you re dealing with a leak around the roof vent pipes then this could be the culprit. They play an important role of sealing roof penetrations so water don t penetrate.

As you lift the shingles apply the cement to the back of the shingle about six inches in. There are damages to roof flashing and or boot covers. Position a new vent pipe flashing over the vent push it down into place and nail where shingles will cover it. If they re damaged there s a good chance that a leak is already happening.

If you buy a repair kit you should have access to instructions that you can use when fixing your roof.