How To Install Vent Pipe Flashing On Existing Flat Roof

How to retrofit the ultimate pipe flashing on an existing roof.

How to install vent pipe flashing on existing flat roof.

You don t need to bend back the shingle that s beneath the pipe. Center the pipe in the flashing and push the flexible front corners up or down so that the flashing pipe is parallel to the vent pipe. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof. How to retrofit the ultimate pipe flashing on an existing roof.

Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place. 1 remove nails holding down shingles above the pip. Use roofing nails to install the l shaped flashing flush with the roof and wall then cover it with roofing cement and reattach the roofer s felt. Slide the new flashing over the vent pipe and under the shingles above the pipe.

Finally reattach all shingles removed in the process. Now that the old flashing is gone you can slide the new flashing over the pipe vent and maneuver it under the shingles above the pipe. Watch our demonstrator use an innovative pipe boot that can be cut to size and fixed to. You can bend them back by working a putty knife under the bottom of each tab and slipping it through the adhesive to break the seal.

Use one roofing nail in each corner of the flashing to secure it to the roof.