Apply the last row of shingles that is just below the vent pipe as shown in figure 1.
Roof flashing vent pipe installation.
You can also caulk around the top of the gasket.
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.
Roof flashing installation instructions 1.
Installing an extra rubber gasket over top of the new pipe flashing will prolong the useful life of that pipe collar.
Select appropriate size flashing for each vent pipe through roof.
How to find a leak.
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.
Apply the roofing felt on the roof cutting a hole for the vent pipe.
Figure 1 install shingles just below vent 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.
Slide the new flashing over the vent pipe and under the shingles above the pipe.
If you intend to install or repair roof flashing then you ll need to pay attention to size.
Use one roofing nail in each corner of the flashing to secure it to the roof.
Roofing nails per side photo 2.
Painting the pipe and flashing will give you a consistent look across the roof so the pipes don t stand out as much.
Seal the underside of the flashing as shown below.
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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.
Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place.
