How To Install Flashing On A Porch Roof

If you already have faulty flashing installed you. Place the flashing between the joint of the house and the roof. The corner cut should be facing upwards.

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Next place your vent flashing on top of the membrane.

How to install flashing on a porch roof.

Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent. Lay the cut flashing down at the corner over a shingle that is already in place. The metal flashing must overlap the material not the other way around. Gently hammer the 45 degree cut around the corner of the porch roof seam.

Then nail the new l shaped flashing under the builder s felt but above the fascia board. Prepare the area where you will install the roof flashing. The flashing on the wall should be flush against it and the porch roof portion should be on top of the shingles. How to install porch roof flashing step 1.

Begin by removing the shingles at the affected area and removing old flashing if present. Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place. Try to keep the nails as flush as possible to the edges. Nail the flashing securely in place using roofing nails.

Measure the length of the porch roof joint to determine how much flashing you will need. 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.