The flue liner, which may be clay tile, concrete, or flexible metal tubing, helps ensure that the smoke and fumes vent out the chimney, protecting the interior masonry from the intense heat in the fireplace. Flue Liner DeteriorationĪ deteriorating flue liner also referred to as a chimney liner, is another reason for a leaky chimney. Unfortunately, without an annual inspection, most homeowners are unaware of chimney crown cracks until more severe damage occurs. Even a lightning strike can cause significant damage to the chimney crown. However, the porous surface is prone to cracking – often due to an aging chimney, house settling, and extreme weather conditions. Its purpose is to protect the interior masonry walls from water damage. The chimney crown is the concrete surface that tops the entire masonry structure. So, it’s vital to have annual chimney inspections to protect your chimney and roof. However, by the time you notice water stains, the leak may have caused water damage to your attic and roof deck, which can lead to wood rot, mold, and structural problems. Some of the tell-tale signs that indicate your flashing may need repair or replacement are water stains on the ceiling or walls by the fireplace. Normal wear and tear, heavy snow accumulating on the roof, frequent rain, and even improper installation can cause the chimney flashing to fail, exposing the chimney to water leaks. The sheet metal flashing creates a watertight seal where the chimney meets the roofline. The chimney flashing is another common source of water leaks. When the metal damper is warping or corroding, has extensive creosote buildup, or has cracks in the rubber gasket, it doesn’t form an airtight seal so that water will leak through these small gaps into your fireplace. Another reason is a damaged damper or gasket.
It is easy to forget to close the damper after a cold and busy winter season. Damper Is Open or DamagedĪn open or damaged damper is a common reason for water coming through the chimney, mainly when the fireplace is not used in the spring and summer. In this article, we’ll explore the five common reasons for water coming in through your chimney. So, anytime you hear the sounds of dripping water in the chimney, notice water dripping or a puddle in the fireplace, it indicates a leaky chimney that needs repair. However, moisture, whether it’s in the form of rain or condensation, can damage the fireplace and chimney. Here in Buffalo, Rochester, and Western New York, we are accustomed to snowy winters and humid summers. Why is Water Coming in Through My Chimney?
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