Sealing Roof Leaks Around Chimney

Chimney flashing installs at the lower sides of a chimney and continues under the roofing.

Sealing roof leaks around chimney.

Chimney roof leaks are usually caused by gaps or cracks between the metal flashing used to join the chimney to the roof and the chimney. Even if you are not comfortable with climbing up to the roof and doing it yourself it makes more economic sense to hire a professional to do the sealing than to leave the chimney unattended. After a leak has developed in a chimney the normal thing to do is seal the crack. The bricks go up around the tile flue liners but at the top you need something to stop the rain and snow from just falling in around the tiles.

The chimney crown is the cement part on top of the chimney. Most leaks are the result of deterioration of the sealant where the flashing meets the chimney. The 1 000 or so that you will have to spend to hire a professional and pay for the materials required will rid you of worries for over a decade. But if you have problems with water leaking around the outside of your chimney down into your walls you may have a problem with worn out flashing or sealant.

2 many chimney leaks are from cracks in the chimney crown. Roof flashing around chimneys can separate from the brick allowing rainwater to leak inside the house. You can see that the very purpose of the chimney crown is to keep rain out. Chimney flashing is the layer of sheet metal that connects the roof to the chimney it is designed to be the seal that prevents water from entering your home by running down the chimney.

Or you may have a poorly designed valley at the bottom of the roof slope and directly above your chimney that catches debris snow and ice. People will use any product for that purpose. Clean any leaves or other debris out of the gap between the flashing and chimney. We have seen all kind of caulking products to tar.

To repair loose roof chimney flashing. The end result is the chimney leak just got worse. Most often when a chimney leaks the leak originates in that spot. Leaks around fireplace chimneys are common and can be hard to identify the source.