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Serving the Greater Houston Metro and surrounding areas for over 19 years. With over 35,000 satisfied customers, American Fireplace Inc. has over 50 years combined experience!

Repairing Chimney Flashing

If you have a leaky chimney itís not always easy to figure out the cause of the leak.   We have noticed that in many cases, faulty or bent chimney flashing is the cause of the leak. Chimney flashing is a metal joint that is located at the base of the chimney on the exterior. When the flashing is installed correctly, a watertight seal is formed so that water canít enter from underneath the flashing. But like everything else, over time the weather corrodes the flashing reducing its overall effectiveness.  When American Fireplace technicians perform an annual chimney inspection; we always check to ensure that the flashing is tightly sealed.

Chimney flashing is installed by joining two metal panel parts.  The base flashing is the first part and is installed underneath a shingle and bent upward against a masonry chimney.  This part of the chimney flashing takes a beating from the weather and itís in this metal part that we find cracks and holes.

After the base flashing is installed, the counter flashing is installed over the base flashing onto the chimney mortar joint. High-quality urethane caulking should be applied, to complete the job so that itís waterproof. If the chimney flashing was correctly installed and the caulking has just worn down, we just will add more caulking. Itís when the flashing materials are not installed correctly leaving spaces between the base and the counter flashing will require more extensive repairs. In those cases we will replace the chimney flashing altogether.

Different weather requires different chimney flashing materials. In Houston, we tend to use galvanized steel and aluminum for chimney flashing installation, although we will use copper when we have a little more budget. Itís more durable and the corners can be soldered for an even stronger bond.

Leaks from corroded metal or improper chimney flashing installation donít always appear immediately. Moisture shows up on the ceiling or in the attic causing the wooden beams and drywall to rot. Youíll usually notice staining on the wall and ceiling after it rains. It doesnít take long for a small leak to turn into a big problem.

Thatís where we come in. American Fireplace has been installing, repairing and cleaning chimneys and fireplaces for more than 20 years. There isnít a water leak problem that we havenít been able to solve over this time. Thatís why when customers tell us that they have a leaky chimney, itís important that we perform a water test before the problem is diagnosed and any work is undertaken. Even the most experienced chimney technician will have difficulties pinpointing the point of entry for water. American Fireplace, We Care about Your Air!

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