Caulking Flashing Around Chimney

Chimney flashing is the layer of sheet metal that connects the roof to the chimney. A second layer of metal is embedded in the chimney mortar joints and folded down to cover the top of the step flashing. Check flashing around the base of the chimney along the walls and around the plumbing vents.

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It is designed to be the seal that prevents water from entering your home by running down the chimney.

Caulking flashing around chimney.

Getting the right sealant on your flashing is the best bet. Square step flashing to fit 1 1 2 in. Sections of l shaped sheet metal are woven into the shingle courses and lapped up the side of the chimney. Embed the corner step flashing in the caulk and nail it to the roof with two roofing nails.

Effective roof flashing around a chimney includes two layers. Most often when a chimney leaks the leak originates in that spot. Apply a jelly bean size dollop of caulk at the corner where the chimney meets the roof. One laying involves tightly playing sheet metal around the chimney edges.

In the second layer more sheet metal is inserted into the chimney mortar joints and folded over to cover the first layer. The first is called step flashing. Snip and bend a piece of prebent 8 in. Look for areas where water might be getting in gaps bent flashing holes made by roofing nails etc.

Around the front corner as shown. Silicone caulk w caulking gun. Turbo poly seal makes it easy to seal between the bricks and it makes a perf. Next comes the counterflashing.

Proper flashing around a chimney includes two layers. Flashing is your main defense against leakage so you want to make sure it is securely fastened and that there are no holes or gaps.