How To Flash A Metal Roof Chimney

Pound the flashing into the grooves and fasten with the drive in expanding anchors.

How to flash a metal roof chimney. Hammer 2 roofing nails into the flashing and roof. Install two layers of butyl tape sealant under perimeter of pan flashing. Fit an 8 inch 20 3 cm piece of square step flashing over the chimney s front corner. Trace the outline of the base of the rubber boot onto the metal roof with a pencil.

First fasten the lower sheet of roofing in place alongside the chimney then install the base flashings at the bottom and sides of the chimney. Flashing the area of a chimney with a rubber roof system is very tricky. Drill a small hole in this spot to mark the chimney s center. Slide the rubber boot over the pipe to check the fit.

Rivet the pan flashing to the sidewall flashing. Pan flashing should extend at least 12 inches up the roof plane. Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in. Apply sealant to sidewall flashing where pan flashing tabs will overlap.

Remove the rubber boot. Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit. As the side base flashing approaches the valley flashing it will have to be shaped to lie in the lower trough section of the roofing so that the second sheet of roofing will lie flat.

Place a small drop of caulk where the roof and chimney meet at the chimney corner. Set the flashing aside. When installing a chimney for a wood stove on a metal roof you ll first need to assess the position. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim.

Bend a piece of cap flashing to fit around the top corner of the chimney and add the cap flashing across the back of the chimney. Place the chimney where it would be related to the stove and mark the center of the chimney on the ceiling.