March 19, 2015 6:00 am
The experts at the CSIA advise homeowners to look for:
Rust stains – More particular to factory-built fireplaces, rust is a critical red flag that water is accessing your chimney and threatening the integrity of the structure. Rust stains could reveal themselves around the outside of the upper chimney or along the inner lining of the fireplace.
Dripping or standing water – This may seem obvious, but water pooling anywhere in and around your masonry or factory-built chimney and fireplace structure means water has an access point to your home.
Bent or damaged flashing – The metal materials used to help seal your chimney from rooftop water runoff must be flush to the chimney structure. Flashing, crickets or other devices can warp or separate from the chimney over time, exposing your structure to water.
If you notice any of these signs, the CSIA suggests using a chimney cap, applying waterproofing agents or calling a certified chimney sweep professional. A chimney cap, also known as a rain cover, works to protect your chimney the way your roof works to protect your house. Waterproofing agents added to the interior of the chimney create a barrier while still allowing moisture to escape. Never use paint or any non-vapor-permeable water sealer because these can trap moisture inside the chimney, hastening deterioration.
Published with permission from RISMedia.