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Homeowners notice chimney leaks when the snow starts to melt or when it rains a lot. If you call us out on a service call to diagnose your leaking chimney, we take a look at all the components of your chimney and fireplace to find the source of the problem. Usually the reason for the leak is lack of a rain cover or possibly that rain drove through the brick and mortar or the chimney flashing.

Chimney flashing is the sheet metal installed between the chimney and roof, ensuring a watertight effect while still allowing for movement between the roof deck and masonry chimney.

chimney flashing
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Glue or tar is a temporary fix to leaking chimneys and usually more work to remove than to fix correctly.

Chimney flashing can be made from galvanized steel sheet metal, Gavlalume (an aluminum-zinc alloy), lead or copper.

The chimney flashing includes base flashing and step flashing on the sides of the chimney. The head flashing at the highest side and the apron flashing at the bottom side of the chimney both need to be secured in a similar fashion.

If the chimney is more than 30” wide, then the chimney requires a chimney saddle or chimney cricket to direct the rain away and prevent pooling water or snow.

If Valley Chimney Sweep & Restoration inspects your chimney and finds issues with your chimney flashing that are causing your leaks like rust, damage (loose or open flashing), or poor installation problems, we will refer you to a local licensed roofing company. Depending on the level of damage, they might recommend chimney flashing repair or chimney flashing replacement. If during your chimney inspection we see a problem with or lack of rain cover, or we see mortar issues, we can repair or replace those items to help fix the leaking issues. We will also check inside the home for damage or evidence of leaking.

Chimney sweeps and roofing companies often work together on your roof. Here is what this Western Chicago roofing company said about working with us.