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While water in the fireplace can be easily cleaned up, it should never be ignored. Chimney leaks, even minor ones, can cause serious damage throughout your fireplace system.

Signs of a Chimney Leak

While chimney leaks are often discovered by the presence of water in the firebox, there are a number of other signs that water entry may be affecting your chimney. The following are just a few of the signs of a chimney leak.

  • Moisture, dampness, or water in the firebox
  • Rust on the damper
  • Masonry spalling
  • Sounds of dripping inside the chimney

What Causes a Chimney Leak?

Because chimneys are complex structures there are a number of ways that water can get into the chimney system. The following are three of the most common areas where water can enter your chimney.

  • Chimney cap. A chimney cap is a metal top with mesh sides that protects the top of the flue from animal, debris, and water entry. A damaged, sized or incorrectly installed chimney cap allows water into the unprotected chimney.
  • Chimney crown. Made of stone or cement, the chimney crown is a slab that covers and seals the top of the chimney. Because of their location, chimney crowns are prone to overexposure to the elements; chips and cracks from repeated exposure can create chimney leaks.
  • Chimney flashing. Flashing is when metal strips and other waterproofing materials are layered on the joint between the roofline and the chimney. This watertight seal can be damaged by weather, overexposure, improper installation, or even roof repairs. Leaky flashing can damage not just the chimney, but also nearby walls, ceilings, and building materials.

Repairing a Leaky Chimney

Before repairing a leaky chimney, the source of the water entry must be identified. Identifying and repairing the source of a leak before repairing the damage ensures that the leak will not return in the future. A chimney inspection is often the best way to identify the source of a leak as well as evaluate the damage a leak has caused.

Once the source of the leak has been identified, the damaged caused by the leak can be repaired; repairing a leaky chimney as soon as possible prevents serious masonry or structural damage from occurring. There are a few of the ways your chimney can be repaired after a chimney leak. One option is to replace damaged bricks and mortar through tuckpointing. Another option is to install a new chimney cap.

Preventing Future Chimney Leaks

One way to protect your chimney against future leaks is by having the masonry waterproofed. In the waterproofing process, a water repellent specifically designed for masonry is applied to the bricks and mortar of your chimney. Our SaverSystems products help prevent leaks by repelling water from the masonry and can used to stop additional water damage from occurring.

A leaky chimney is more than just a minor inconvenience. You should repair leaks as soon as possible to prevent dangerous chimney damage from occurring. For more information on preventing or repairing chimney leaks, contact Jack Pixley Sweeps today.