Bend the flap down and nail along the top edge.
How to add corner roof flashing.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Nail it in place with two nails one.
Move the piece of wall or roof edge flashing either way as necessary so one end extends 16 inches beyond the corner of the wall or the roof sheathing.
3 mark the flashing at the corner using a.
Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint.
Run the base flashing 4 to 5 in.
Most flashing is 8 inches wide.
4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles.
Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.
The metal flashing must overlap the material not the other way around.
Bend it back so that it overlaps the corner flashing.
There are two good ways to handle corner flashing.
Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.
Ensure it sits flat and extends at least 8 inches above the shingles.
Next place your vent flashing on top of the membrane.
Then set the piece down.
Hammer one nail to the.
Then nail the new l shaped flashing under the builder s felt but above the fascia board.
How to install step flashing with a wall corner step three.
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.
