Rain Falling Inside the Chimney? Find Out Why
Chimney leaks are among the most common problems people encounter after heavy rains.
Chimney leaks are among the most common problems people encounter after heavy rains. Chimneys are complex structures with multiple components, making it hard to determine the leak source.
Water dripping down the chimney, musty odor, cracked or spalled masonry, condensation inside the firebox, or moisture and water stains on the wall after a heavy rain indicates a problem with the chimney system that needs attention.
Water is hazardous for chimney structures. Rainwater finding its way into the chimney would mean its rapid disintegration. A chimney repair company can inspect and address the suspected leak to prevent significant damage. Let's consider a few reasons that can cause rain to fall inside the chimney:
Structural damage
A common reason why rainfall enters chimneys is wear and tear and damage. The exteriors of the chimney constantly withstand elements like rain, wind, snow, and sun. These can cause the masonry to degrade and create cracks between the bricks or make it spall. Even tiny cracks make the chimney's masonry vulnerable to damage and breakdown from moisture and water. In winters, the crack can worsen due to freezing, thawing, and refreezing of water.
Cracked chimney crown
Another possible source of chimney leaks is a damaged or missing chimney crown. It sits atop the chimney and has a sloped surface to accommodate water runoff and prevent it from entering the flue or damaging the masonry. The crown acts as the first line of defense from the weather elements. Issues like a corroded, bent, chipped, and cracked chimney crown will allow water leaks into the chimney flue and cause extensive damage.
Brick saturation
In brick chimneys, brick and mortar are porous enough to absorb water during rains. A long spell of rain can saturate the bricks, and water can drip inside the chimney.
Age
The chimney's ability to prevent water penetration declines as it ages. While chimney replacement is an option, another cost-effective yet efficient measure is to use a waterproof application to prolong the chimney's lifespan.
Faulty chimney lining
Chimneys have a clay lining inside the flue to prevent rain from entering and offer protection from the heat generated by the fireplace. Over time, the lining develops cracks and chips, and replacement becomes necessary to protect the flue. Chimney relining (replacing the clay lining with more durable steel) will make the chimney structurally sound and prevent water penetration through cracks and holes.
Flashing problems
Chimney flashing is installed where the chimney connects to the roof to create a waterproof seal and keep moisture at bay. Lack of adequate waterproofing during installation or cracks, wear and tear, and deterioration of the flashing over time will allow water to make its way inside. Replace the flashing or apply a sealant to eliminate the entry point.
Keep the raindrops out of the chimney for good
Unnoticed chimney leaks can lead to potential hazards and costly repairs. Regular preventative maintenance is the most efficient way to prevent water and moisture issues. Hire a chimney inspection and repair company to assess the chimney, identify the leak source, and fix it as soon as possible to prevent water damage.