How To Flash Around A Round Chimney On A Metal Roof

Place the step flashing over the caulk and onto the chimney.

How to flash around a round chimney on a metal roof.

A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Flashing is often made of metal which is the norm on a metal roof. Hammer 2 roofing nails into the flashing and roof.

Bend legs up the chimney sides about 1 inch. It s typically made of thin pieces of impenetrable material which inhibits water leaking around the chimney preserving the building from moisture and mold issues. Fit an 8 inch 20 3 cm piece of square step flashing over the chimney s front corner. I then pushed the flashing onto the sealant and proceeded to fasten the flashing to the roof with roofing screws.

The rubber boot is trimmed to fit around the pipe and then secured to the roof with screws and sealant. The flashing can be installed quickly and easily with kits that use rubber pipe boots. The evenly spaced ridges of the roofing profile present a real challenge. I have to flash a chimney where it penetrates a corrugated metal roof with ridges 8 inches o c.

The self tapping washer screw type for even better waterproofing i then used the same sealant and dispensed a thick bead around the exterior of the flashing and smeared it flat to ensure a complete seal around the metal. Panels above the chimney should be removed. Place a small drop of caulk where the roof and chimney meet at the chimney corner. When visualizing a flashing strategy for the down slope face of the chimney picture the plane of the roof at the top of the ridges not at the lower flat portion of the.

Trim panels to fit around the chimney. Set the flashing aside.