Installing Flashing For A Roof Vent

Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.

Installing flashing for a roof vent.

These need to be fabricated or ordered to match a specific roof pitch and pipe diameter. Traditional flashings still work. Slide the new flashing over the vent pipe and under the shingles above the pipe. Step 2 loosen shingles.

To install vent pipe flashing you will be placing the upper portion below the shingles while allowing the bottom portion that extends below the pipe to lay exposed on top of the shingles. Most will need an extension ladder. The traditional pipe flashing is a soldered lead riser pipe that encloses the vent pipe and folds in the pipe at the top. The flashing for your plumbing vent needs to be large enough to surround the vent so it should be just wider than the vent s diameter.

How to install vent pipe flashing on an existing roof step 1. Install galvanized metal flashing. Step 4 complete finish work. Use the mallet to gently tap down the sides of the flashing so that it follows the profile of the tiles.

Run a bead of silicone on the two tiles next to the flashing. Pry back the shingles that are above and on both sides of the vent pipe using a pry bar. How to install roof flashing for a vent. The best method for sealing valleys is to install a strip of roofing felt or a waterproof membrane in the valley over the roof deck before installing roofing felt.

It s soldered to a roof flange that layers into the shingles. Slide the vent under the shingles so they cover the top half of the vent flange. Apply a bead of asphalt roof cement on the bottom of the vent. Install the flashing by sliding it into place so that it is sitting under the tiles above it.

Seal the top of the counter flashing and any gaps with plastic roofing cement. You ll need to get on the roof to install a new flashing. Step 1 climb to the roof. The lower half of the flange sits on top of the shingles.

It is important that. The flashing should be installed under the. Step 3 install new flashing. Place the new flashing over the vent and into the correct position.