Flashing A Stone Chimney On A Metal Roof

On each end of the pan flashing cut about 1 1 2 in.

Flashing a stone chimney on a metal roof.

Don t use aluminum flashing for this situation as the masonry will corrode the aluminum. Allowing for movement chimneys have a foundation which may be independent from the house. It s typically made of thin pieces of impenetrable material which inhibits water leaking around the chimney preserving the building from moisture and mold issues. Cut the base flashing.

A piece of metal that is sealed to the chimney surface and covering the top of the step flashing to form a water tight barrier by directing water over and away from the step flashing. Apply sealant to sidewall flashing where pan flashing tabs will overlap. In any case the roof deck may move relative to the masonry chimney and good flashing details anticipate. A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.

Pan flashing should extend at least 12 inches up the roof plane. A typical roof to chimney flashing will consist of two parts. Cut the flashing to fit along the chimney s front. Chimney boot for a metal roof.

Comprised of step tins rubber or some other type of membrane. For a better connection hem the end of the metal being inserted into the stone and tap in small v shaped pieces of metal to open the hem and wedge both sides of the hem to the reglet. Let s focus on masonry chimneys since they are the most challenging and one of the most common. Round metal chimneys will be flashed much like pipes.

Install two layers of butyl tape sealant under perimeter of pan flashing. The lower step flashing. The first part is a one piece pan that is bent at a right angle and laid with one leg against the chimney and the other on the roof. Cut and fold pan flashing to fold up the back of the chimney and over the sidewall trim.

And the upper counterflashing. Each leg should be about 6 in. Along the bend at both ends so that the flashing bends around the chimney at the bottom and overlaps at the ridge. Use tin snips to cut the bent base flashing that you ordered from the sheet metal shop.

Bend 1 side of the flashing around 1 edge of the chimney.