How To Install A Metal Roof Flashing Around A Chimney

Around the front corner as shown.

How to install a metal roof flashing around a chimney. To help you install chimney flashing on a metal roof here are some tips for you. Pan flashing should extend at least 12 inches up the roof plane. Rivet the pan flashing to the sidewall flashing. Place a second piece of 8 inch 20 3 cm flashing against the chimney.

Secure a shingle over the second piece of flashing with a nail. Once the pan flashing is in place nail it to the roof sheathing and lay the shingles over the flashing. Step flashing on roof peak. Snip and bend a piece of prebent 8 in.

Apply butyl tape sealant to the bottom of an offset cleat and install the cleat six inches above the chimney base. The flashing should partially overlap the shingle that covers the first piece of flashing. Apply a jelly bean size dollop of caulk at the corner where the chimney meets the roof. On each end of the pan flashing cut about 1 1 2 in.

Square step flashing to fit 1 1 2 in. Roof shingle over step flashing. If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend. Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe.

Along the bend at both ends so that the flashing bends around the chimney at the bottom and overlaps at the ridge. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. Secure a shingle over the corner flashing using a hammer and roofing nail.

Installing chimney flashing on a metal roof is a laborious business but if you love to work with your hands and you want to save some money on professional fees you may want to try doing this carpentry job on your own. Hammer 2 roofing nails into the flashing and roof. Remove the rubber boot. Trace the outline of the base of the rubber boot onto the metal roof with a pencil.

Slide the rubber boot over the pipe to check the fit. Screw the pan flashing to the roof with gasket screws.