Step flashing can be purchase pre molded into the l shape or flat.
Installing l flashing on roof.
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.
Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint.
Begin by removing the shingles at the affected area and removing old flashing if present.
Roof shingle over step flashing.
Flashing is installed to surround roof features such as vents.
If you purchase the flashing flat you will have to mold each piece yourself.
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.
You continue this process around the length of the chimney cutting each step flashing to fit.
This how to video explores proper roof flashing installation for shingle roofing applications.
Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge.
Bend the corner flashing tightly around the corner.
Step flashing is installed where the roof and the side wall meet to defend against water penetration.
Completing a professional grade step flashing installation is important.
Step flashing on roof peak.
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.
