How To Flash A Chimney On A Flat Roof

Apply butyl tape to the underside of the closure.

How to flash a chimney on a flat roof. Panels above the chimney should be removed. This can be a source for anything from smoke to steam. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Place the step flashing over the caulk and onto the chimney.

Place a small drop of caulk where the roof and chimney meet at the chimney corner. In most cases it is essential to use a skilled craftsman to wrap a layer of the rubber material into a step flashing and then counter flash with aluminum or copper. Flashing the area of a chimney with a rubber roof system is very tricky. Locate all of the areas around the flat roof where water can potentially enter.

Pound the flashing into the grooves and fasten with the drive in expanding anchors. Set the flashing aside. Look for any type of vents as well. It is a time consuming process.

Fit an 8 inch 20 3 cm piece of square step flashing over the chimney s front corner. Flat roof flashing is also installed around the perimeter of the roof to protect the underside of shingles. Bend legs up the chimney sides about 1 inch. Trim panels to fit around the chimney.

Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Look for the chimney or any type of pipe coming out of the building. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.