How To Flash A Chimney On A Metal Roof

Slide the rubber boot over the pipe to check the fit.

How to flash a chimney on a metal roof.

Secure a shingle over the corner flashing using a hammer and roofing nail. Place the step flashing over the caulk and onto the chimney. Fold closure 90 degrees and. Bend legs up the chimney sides about 1 inch.

Place a second piece of 8 inch 20 3 cm flashing against the chimney. Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Panels above the chimney should be removed. Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe.

If you use nails to hold the overlaps you should use a nail gun instead of a hammer to drive the nails into the flashing. Hammer 2 roofing nails into the flashing and roof. Place a small drop of caulk where the roof and chimney meet at the chimney corner. Trim panels to fit around the chimney.

Trace the outline of the base of the rubber boot onto the metal roof with a pencil. Use metal screws or nails to hold the overlaps together then apply caulking material on the seams to seal them off.