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.
Installing vent pipe roof flashing.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
When you install roof flashing you will need to use a sealant.
Slide the new flashing over the vent pipe and under the shingles above the pipe.
Put one nail in the bottom edge with a dab of caulk under it to seal the.
Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place.
Over time the flashing around plumbing vents can rust or deteriorate and it will need to be replaced.
Next place your vent flashing on top of the membrane.
Be sure to clean the outside of the pipe from old caulk that could be in the way of the flashing.
Carefully remove all the shingles from the flashing.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Apply the roofing felt on the roof cutting a hole for the vent pipe.
These need to be fabricated or ordered to match a specific roof pitch and pipe diameter.
Use one roofing nail in each corner of the flashing to secure it to the roof.
Apply the last row of shingles that is just below the vent pipe as shown in figure 1.
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.
If nailed to both the flashing may deform under the pressure from shifting brick or wood.
Roofing nails per side photo 2.
The metal flashing must overlap the material not the other way around.
How to install flashing around a vent pipe five steps to replace a vent pipe flashing 1.
The main reason homeowners choose to install or replace the vent pipe flashing on their roof is to stop or prevent leaks which may also help extend the lifespan of the roof.
While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall.
It s soldered to a roof flange that layers into the shingles.
Remove the old and clean the pipe.
Figure 1 install shingles just below vent pipe.
The traditional pipe flashing is a soldered lead riser pipe that encloses the vent pipe and folds in the pipe at the top.
