Installing L Flashing On Roof

Most flashing is 8 inches wide.

Installing l flashing on roof.

Step flashing can be purchase pre molded into the l shape or flat. Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. You continue this process around the length of the chimney cutting each step flashing to fit. Flashing is installed to surround roof features such as vents.

Under the base part of the flashing use plastic roofing cement and finish attaching it to the roof with galvanized roofing nails. Step flashing on roof peak. Completing a professional grade step flashing installation is important. Begin by removing the shingles at the affected area and removing old flashing if present.

Roof shingle over step flashing. This how to video explores proper roof flashing installation for shingle roofing applications. Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. Step flashing is installed where the roof and the side wall meet to defend against water penetration.

4 inches should go up the house wall and 4 inches should go on top of the porch roof shingles. If you purchase the flashing flat you will have to mold each piece yourself. Then nail the new l shaped flashing under the builder s felt but above the fascia board. 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.