A chimney that leaks when it rains is one of the most common calls we get, and one of the most important to fix quickly. Water is the number one enemy of masonry. Here is what causes chimney leaks and how they get fixed.
The Most Common Causes
- A cracked or missing chimney cap. The cap keeps rain out of the flue; without it, water pours straight down.
- A damaged crown. The concrete slab at the top cracks and lets water into the masonry.
- Failed flashing. The metal seal where the chimney meets the roof is the single most common leak point.
- Porous or cracked brick and mortar. Old masonry soaks up water like a sponge.
How Each Is Fixed
The fix depends on the source. A missing cap is a simple installation. A cracked crown is sealed or rebuilt. Failed flashing is re-sealed or replaced. Porous masonry is repointed and treated with a breathable waterproof sealant.
A proper diagnosis matters, because a leak often has more than one cause. That is why we start with a full inspection rather than guessing.
Why You Should Not Wait
A small leak today becomes rotted framing, interior water stains, a rusted damper, and a deteriorating flue liner tomorrow. In Connecticut, water that gets in also freezes and expands, multiplying the damage each winter.
Professional Chimney Repair in Connecticut
King Cleaning Air Duct provides chimney repair across Connecticut, including Chimney Repair in Manchester CT, Chimney Repair in Vernon CT, Chimney Repair in South Windsor CT. We are a local, insured company with honest, up-front pricing. Call 860-736-3836 for a free quote.
Frequently Asked Questions
Why does my chimney only leak sometimes?
Leaks often depend on wind direction and rain intensity. A driving rain from one direction can find a gap that a light rain does not, which is why intermittent leaks still need attention.
Is a leaking chimney an emergency?
Not an immediate emergency, but it should be addressed quickly. Water damage compounds fast, especially through Connecticut’s freeze-thaw winters.