A do it yourself video detailing step by step how to flash a chimney with our metal roofing chimney kit.
Flashing a stone chimney on a metal roof.
Flashing is a method of weatherproofing the base of a chimney.
Bend 1 side of the flashing around 1 edge of the chimney.
Cut the flashing to fit along the chimney s front.
Allowing for movement chimneys have a foundation which may be independent from the house.
Comprised of step tins rubber or some other type of membrane.
Use tin snips to cut the bent base flashing that you ordered from the sheet metal shop.
Cut the base flashing.
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.
Round metal chimneys will be flashed much like pipes.
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.
Apply sealant to sidewall flashing where pan flashing tabs will overlap.
Flashing is often made of metal which is the norm on a metal roof.
Chimney boot for a metal roof.
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.
On each end of the pan flashing cut about 1 1 2 in.
Don t use aluminum flashing for this situation as the masonry will corrode the aluminum.
Each leg should be about 6 in.
Rivet the pan flashing to the sidewall flashing.
A typical roof to chimney flashing will consist of two parts.
The lower step flashing.
Install two layers of butyl tape sealant under perimeter of pan flashing.
In any case the roof deck may move relative to the masonry chimney and good flashing details anticipate.
Let s focus on masonry chimneys since they are the most challenging and one of the most common.
And the upper counterflashing.
Pan flashing should extend at least 12 inches up the roof plane.
