How To Install Vent Flashing On Flat Roof

Roof flashing will be found in a number of different locations on your roof.

How to install vent flashing on flat roof.

If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend. Begin by removing the shingles at the affected area and removing old flashing if present. Step flashing on roof peak. Flat roof flashing is also installed around the perimeter of the roof to protect the underside of shingles.

Drip edge the drip edge is flashing that directs water into the gutters. Locate all of the areas around the flat roof where water can potentially enter. 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. Then nail the new l shaped flashing under the builder s felt but above the fascia board.

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. While you are up on the roof you should inspect all of the areas so that you don t have to return any time soon. Roof shingle over step flashing. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.

Use one roofing nail in each corner of the flashing to secure it to the roof. This can be a source for anything from smoke to steam. Look for any type of vents as well. Slip a flat bar under the edge of the vent flashing and pop the nails up photo 1.

Bend the corner flashing tightly around the corner. Slide the new flashing over the vent pipe and under the shingles above the pipe. 1 remove nails holding down shingles above the pip. Look for the chimney or any type of pipe coming out of the building.