How To Flash A Chimney On A Metal Roof

Secure a shingle over the corner flashing using a hammer and roofing nail.

How to flash a chimney on a metal roof.

Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe. Hammer 2 roofing nails into the flashing and roof. Use metal screws or nails to hold the overlaps together then apply caulking material on the seams to seal them off. Apply butyl tape to the underside of the closure.

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. Place the step flashing over the caulk and onto the chimney. Trim panels to fit around the chimney. Fold closure 90 degrees and.

Place a small drop of caulk where the roof and chimney meet at the chimney corner. Place a second piece of 8 inch 20 3 cm flashing against the chimney. Bend legs up the chimney sides about 1 inch. Slide the rubber boot over the pipe to check the fit.

Cut two opposing 45 degree notches into z closure to allow a 90 degree bend. Remove the rubber boot.