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Instaling roof vent flashing.
Flashing is installed to surround roof features such as vents chimneys and skylights.
Next place your vent flashing on top of the membrane.
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.
Then nail the new l shaped flashing under the builder s felt but above the fascia board.
1 remove nails holding down shingles above the pip.
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.
Using a sawzall cut any roofing nails in the area of the lower mounting plate flush with the sheathing.
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It s soldered to a roof flange that layers into the shingles.
Roofing nails per side photo 2.
The metal flashing must overlap the material not the other way around.
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.
Next use a reciprocating saw with a rough in blade to cut the out the marked template.
Take your time and do not use a straight blade use a hook blade you can get it at home of the deep.
The traditional pipe flashing is a soldered lead riser pipe that encloses the vent pipe and folds in the pipe at the top.
Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place.
These need to be fabricated or ordered to match a specific roof pitch and pipe diameter.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
After selecting an area to install from inside the building square the template between the roof rafters and outline with a marker.
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.
Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.
