Effects of the Winter Freeze Thaw Cycle on the Chimney Masonry
What are the effects of the winter freeze thaw cycle on the chimney masonry the Chicagoland area? While you’re enjoying the warmth of a crackling fire, snow, rain, and ice are accumulating on the brick exterior of your chimney.
Throughout winter, temperatures often fluctuate above and below the freezing mark. When the temperature drops below freezing, moisture sitting in the bricks and mortar turn to ice, causing it to expand. As the ice crystals grow, it creates cracks in the bricks and mortar. When the ice melts during the day, these cracks fill with more moisture, only to freeze again when the temperatures go below freezing, restarting the process.
This cycle repeats throughout the Winter season and gradually worsen the damage. Over time, these expanding cracks cause bricks to flake and pieces fall off including chunks of mortar.
If this freeze thaw cycle continues to deteriorate over time and is not checked, it can weaken the chimney to the point of partial or complete collapse. It goes without saying, a deteriorating chimney poses safety risks, including an increased chance of fire and carbon monoxide poisoning.
Yearly Chimney Inspections Are Key to Prevention
Scheduling annual chimney inspections can help detect early signs of winter damage before they turn into costly repairs. During a level 1 inspection, a Superior Chimney technician conducts a visual assessment of both the interior and exterior of the chimney. This inspection can reveal issues such as missing bricks, deteriorating mortar, damage to the chimney crown, and water leaks. Taking care of these problems early not only extends the life of your chimney but also ensures your fireplace functions safely and efficiently.
Tuckpointing to Repair Chimney Damage
For chimneys with some masonry deterioration, Superior Chimney professionals use a technique called tuckpointing. This involves filling in cracks and voids with a specially formulated bonding compound. The repair material is carefully blended seamlessly with the existing bricks and mortar, restoring the chimney to its original appearance. However, if the brick and mortar has sustained severe damage, a partial or complete chimney rebuild may be necessary to restore the chimney’s integrity.
Using a Waterproof Agent to Extend the Life of the Chimney
Applying a waterproof agent such as Chimney Saver, is an effective way to protect your chimney from absorbing water. Before applying the waterproof agent, any existing masonry damage will need to be repaired. Using the wrong type of waterproofing product can cause more harm than good, so it is essential to hire a licensed and experienced chimney professional such as Superior Chimney. Experts will apply the agent that keeps moisture out while allowing the bricks to release trapped water vapor. To maintain protection, the waterproof coating should be reapplied every 8 – 10 years. Our technicians will keep an eye on it for you during our yearly inspection.
Contact our office today to schedule a chimney professional to check the effects of the winter freeze thaw cycle on the chimney masonry.
This post first appeared on https://www.superiorchimney.net
