Installing Roof Vent Flashing

Bend the corner flashing tightly around the corner.

Installing roof vent flashing.

After selecting an area to install from inside the building square the template between the roof rafters and outline with a marker. However over time the flashing can wear out and allow water to penetrate the interior of your home. Next place your vent flashing on top of the membrane. 1 remove nails holding down shingles above the pip.

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. Roof flashing is standard around any pipe vent. Begin by removing the shingles at the affected area and removing old flashing if present. The shape of vent flashing is typically a cylinder with a wide flange at the base which is lapped into the shingles as the roofing is installed.

These need to be fabricated or ordered to match a specific roof pitch and pipe diameter. Then nail the new l shaped flashing under the builder s felt but above the fascia board. The traditional pipe flashing is a soldered lead riser pipe that encloses the vent pipe and folds in the pipe at the top. Next use a reciprocating saw with a rough in blade to cut the out the marked template.

Installing a new pipe vent flashing is easy and can be done in a short time. The tools needed are readily available at your local home improvement store. Vent pipe flashing fits over flues or pipes. Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.

Roof shingle over step flashing. Step flashing on roof peak. Using a sawzall cut any roofing nails in the area of the lower mounting plate flush with the sheathing. 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.

Step 1 climb to the roof. Drip edges are strips of flashing material that run along roof eaves and rakes to prevent water from seeping under the finished roof along its edges. The metal flashing must overlap the material not the other way around. Slide the new flashing over the vent pipe and under the shingles above the pipe.

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