How To Install Vent Pipe Flashing On Existing Metal Roof

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How to install vent pipe flashing on existing metal roof. Typically flashing is installed using roofing nails and roofing cement. Roofing nails per side photo 2. How to install a flashing on a metal roof. Slide the new flashing over the vent pipe and under the shingles above the pipe.

Rubber vent flashing automatically adjusts to any pitch lift the vent enough to spread caulk under the sides but not the bottom edge then nail with three 1 1 4 in. Put one nail in the bottom edge with a dab of caulk under it to seal the. Hammer the nails into the top and sides of the flashing. Below are some links to the tools i used on this project.

1 remove nails holding down shingles above the pip. After installation you ll then re lay the shingles you removed to provide a comprehensive water tight solution. 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. To make the installation easier you can turn the flashing as you lower it in place.

I prefer to use a dsa flashing also known as a dead soft aluminum flashing. This is how i installed my dwv drain waste vent pipe through my metal roof. Following is the proceedure for installing the dsa flashing. Be sure to subscribe.

The flashing should be installed under the top and side shingles but it should be laid above the shingles that are below the vent pipe.