How To Add Roof Flashing

Install the step flashing before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof.

How to add roof flashing. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. After this incise the first flashing to bend properly so that it can go round the front of the chimney its side as well as the base. Once the shingles are installed lay the flashing about 4 inches past each end of the chimney. Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.

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. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Bend it back so that it overlaps the corner flashing. Gaf mastering the roof chapter 13 flashing is used to seal and protects joints in a building from water penetration by direct the flow of water away from.

Once you perform the step above use plastic roof cement under the base part of the flashing. 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. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.

Then set the piece down. How to install step flashing with a wall corner step three. Begin by removing the shingles at the affected area and removing old flashing if present. Nail it in place with two nails one.

Once even a small section of roofing cement fails you ll have a leak. Hammer one nail to the. Next place your vent flashing on top of the membrane.