Metal Roof Flashing Around Chimney

Trim panels to fit around the chimney.

Metal roof flashing around chimney.

Effective roof flashing around a chimney includes two layers. Fold closure 90 degrees and. Panels above the chimney should be removed. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

Two ways to flash roof edges. In the second layer more sheet metal is inserted into the chimney mortar joints and folded over to cover the first layer. Flashing is installed to surround roof features such as vents chimneys and skylights. Fit the flashing up against the front of the chimney.

Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Apply butyl tape to the underside of the closure. One common method is to lay the edge metal under the eaves membrane and over the rake. Bend legs up the chimney sides about 1 inch.

The part of the flashing that lies flush with the roof should overlap the roofing shingles. One laying involves tightly playing sheet metal around the chimney edges. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.