How To Put Flashing On A Roof

Begin by removing the shingles at the affected area and removing old flashing if present.

How to put flashing on a roof.

Step flashing step flashing redirects the water back onto the shingle. How to install roof flashing against a wall. You may want to paint the flashing to match the roof. How to install porch roof flashing step 1.

The metal flashing must overlap the material not the other way around. If you already have faulty flashing installed you. 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. Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

There s no need to nail more than this and don t nail through the flashing into the shingle as this will introduce a potential leak to the roof. Prepare the area where you will install the roof flashing. Bend the corner flashing tightly around the corner. Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place.

Step flashing on roof peak. Roof shingle over step flashing. Next place your vent flashing on top of the membrane. Measure the length of the porch roof joint to determine how much flashing you will need.

Before running the first row of shingles install a piece of step flashing along the sidewall so that it sits tightly against the roof. Step 3 install the flashing. To get the best from the flashing you should fit of the sheet onto the side of the roof and the other half onto the building or addition which it is touching. Then nail the new l shaped flashing under the builder s felt but above the fascia board.

If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend. Align the step flashing with the leading edge of the starter course and nail it in place using one nail in the upper corner. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. This helps to prevent water from sliding around the aluminum flashing and into the roof area.