Install Flashing Roof Vent

Remove the old and clean the pipe.

Install flashing roof vent. Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place. 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. After installation you ll then re lay the shingles you removed to provide a comprehensive water tight solution. How to install flashing around a vent pipe five steps to replace a vent pipe flashing 1.

Carefully remove all the shingles from the flashing. 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. Be sure to clean the outside of the pipe from old caulk that could be in the way of the flashing. Use one roofing nail in each corner of the flashing to secure it to the roof.

Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof. Slide the new flashing over the vent pipe and under the shingles above the pipe. Typically flashing is installed using roofing nails and roofing cement. Further your step flashing pieces need to be 10 inches 254 mm long and at least 2 inches 50 mm wider than the exposure of the shingle you re using.

In order to properly install new flashing you ll have to remove the shingles surrounding your old flashing and then re lay them after installation.