Chimney flashing is located around the base of your chimney where it meets the roof. The purpose of flashing is to seal the area between the chimney and the roof, ensuring that water cannot seep into this area creating serious damage to both the chimney and roofing materials.
For each chimney structure, there are different types of flashing that work best to prevent water intrusion. A few of these flashing types include step flashing, counter flashing, and apron flashing. Each type of flashing has a different installation process designed to most effectively protect the chimney and roof.
Water intrusion around the base of the chimney can cause serious damage to both your chimney and the roof. Over time, water intrusion can cause the roofing and masonry to deteriorate and the interior of your home to suffer from leaks, mold, and mildew.
Water is particularly harmful to masonry. When water enters cracks in the chimney, it can freeze during colder months, causing the masonry to expand and contract, which further exacerbates the cracks and can even lead to crumbling. This is called the freeze-thaw cycle. Flashing ensures that water doesn’t find its way into these areas, extending the lifespan of your chimney and roof.
One of the major problems with water intrusion around your chimney is the potential for mold and mildew growth. Mold growth can not only cause unpleasant odors but also contribute to health problems such as respiratory issues and allergies. Flashing helps prevent this issue by keeping moisture out, creating an environment where mold and mildew cannot thrive.
While chimney flashing is designed with durability in mind, it doesn’t last forever. Here are some signs that your flashing may need repair or replacement.
If you notice water stains or leaks around your fireplace or chimney area, this can be a clear sign that your flashing may no longer be doing its job properly.
If possible, visually inspect the flashing around your chimney for signs of damage, rust, or missing pieces. If any part of the flashing is compromised, it needs to be repaired. We recommend scheduling a professional chimney inspection, as accessing this area may not always be safe to DIY.
Cracks in the chimney can allow water to seep in. If you notice cracks, it’s important to check the flashing as well. Where chimney damage is, more damage is common to follow.
Flashing may eventually begin to rust or corrode as a result of exposure to the elements. If you spot any rust or corrosion, it may be time to replace or repair the flashing.
Chimney flashing may not be the most glamorous part of your chimney system, but it should never be ignored. Properly installed and maintained flashing ensures that your home stays protected from water damage. Regular inspections and timely repairs of your chimney flashing are crucial for avoiding expensive repairs and keeping your chimney safer and more efficient.
At National Chimney, we understand the importance of a safe and functional chimney. Our team is here to help keep it all in check from inspections and cleanings to repairs and installations. Give us a call or contact us online today to schedule your chimney and fireplace services!
