How To Install Roof Flashing Around A Chimney

Then spread the plastic roofing cement along the base flashing sheet underside and simply place the flashing around the base of the chimney and over the shingles.

How to install roof flashing around a chimney.

Now you need to install the step flashing. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Damaged or improperly installed roof flashing especially around the chimney or dormer is one of the most common causes of roof leaks. Use a circular saw to saw grooves into the mortar joints.

According to the federal emergency management agency fema improper roof flashing could lead to wood rot and even deck collapse. Fit the front cap flashing around the front of the chimney. So chances are if you ve been looking into your roof and its flashing you. Use mortar nails to secure the base flashing to the chimney.

Bend the cap flashing around the front of the chimney. The grooves should be 1 inch 2 5 cm deep. Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Pound the flashing into the grooves and fasten with the drive in expanding anchors.

Make sure you leave a gap of two inches at the base for the water to drain.