Leaking Chimney Can Come Heavy Summer Rains

Summer rainstorms are often a welcome for cooling off hot sunny days and for keeping our lawns and gardens nice and green! Unfortunately, heavy rain can also lead to a leaking chimney. During the summer, chimney leaks are the among some other common chimney issues that we encounter as we meet and talk with homeowners. Even chimneys with no history of issues can develop leaks and water damage over the course of just one summer.

What causes chimney leaks?

Chimney cap: The chimney cap protects the top of your flue from water entry, as well as animals and debris. Without a properly fitted chimney cap, the flue and fireplace are left completely exposed to water entry from rain.

Flashing: Flashing is the water tight strips that seal the seam between your roof and the chimney structure. If flashing is incorrectly installed, damaged, or merely loses its seal due to wear and tear or age, water can easily seep through any gaps. This can cause water damage to not only the roof and chimney, but also the ceilings and walls around the chimney.

Masonry damage: If one side or part of your chimney is often directly exposed to rainfall or other sources of water, masonry repairs may be needed due to the deterioration or become damaged faster than the rest of the chimney.

Symptoms of a leaking chimney

Many homeowners falsely assume that all leaky chimneys present themselves as visible water in the fireplace or flue. However, because of the size and complexity of most chimney systems, chimney leaks are often not recognized until they’ve already caused significant damage.

Below are some of the signs that may indicate your chimney is leaking.

  • Water or condensation inside the firebox
  • Sound of dripping water in the chimney
  • Moisture, leaks, or water staining on walls or ceilings around chimney
  • Musty or dank odors, especially after it rains
  • Cracked or chipped interior or exterior masonry

Preventing a leaking chimney

The best way to prevent chimney leaks is by having regular preventative maintenance done on your fireplace and chimney. Annual chimney sweepings and inspections can often identify any new chimney or masonry damage, allowing you to have it repaired before it leads to a chimney leak.

Another option for preventing leaks and water damage to your chimney is to have your masonry waterproofed. The waterproofing process involves the application of a specially designed sealant that keeps water out while allowing the masonry to retain its semi porous nature. These products can even be applied to chimneys with existing water damage as a way to keep it from getting worse.

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Joshua Reckelhoff

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