You can be sure that winter brings rain, dew, and fog along with occasional snow and ice events. Now is the time to prepare your chimney for winter, which is greatly impacted by all forms of moisture. When the chimney in your home is exposed to moisture, it can change the state and structure of your chimney, especially if the water exposure occurs during a time of extremely high or low temperatures and for a prolonged period of time. Without the proper preparation any of the following may occur as a result of chimney moisture:
Metal plus moisture equals rust. Rust can deteriorate the cap and the flashing on your chimney if not addressed properly by a professional chimney inspector.
Buildup of Creosote
Creosote is a black sludge that can build up inside your chimney flue with increased exposure to moisture. Your chimney should be free of creosote for safety reasons. Over time it can increase the likelihood of a chimney fire.
Moisture can damage a chimney’s brick exterior. If the chimney bricks crack they may fall out, which makes your chimney extremely exposed to moisture. Masonry cracks should be repaired as soon as possible so that small issues don’t turn into high-cost problems.
Chimney leaks are not safe or effective if you want a warm, cozy fire in your fireplace this winter. Make sure there is no water dripping into your chimney or drafty air inside the firebox.