The Chimney Waterproofing Process

Chimneys are made of materials that have all sorts or cracks and crevices- they’re very porous. Like a sponge, these materials hold water. Intermittent exposure to rain will cause deterioration over time as water seeps into these pores. Eventually, these pores will become larger, the water entering them will cause leaks and cracks. Left untreated, your chimney will deteriorate at an increasing rate as more water damage accrues.

Seasonal changes can make this pattern worse. A freeze-thaw effect sets in when water gets trapped inside the material of the chimney and freezes there, often causing cracks. These cracks are larger pathways, allowing more water through once everything thaws out.

This process is halted and may be slightly reversed during a professional waterproofing. Left untreated, not only is your chimney decaying, but the water could seep into other parts of your home, or settle and create mold. Leaving the issue alone will lead to necessary and costly repairs in the future.

This is a newer process. Even a few years previously, there wasn’t much that could stop this onslaught of water as it decayed your chimney. Now with the advances of modern technology you can expect your chimney to hold up better, require fewer repairs, and even look better for far longer than you might expect.

This waterproofing product doesn’t change the normal function of your chimney. In fact, if your chimney is over 5 years old, this process can even improve it’s function.

The Waterproofing Process is Complex

This process isn’t all that easy, which is why it is new to the industry. Simply placing a sealant on the exterior of the chimney isn’t a good idea, as the brick or stone must remain permeable so the chimney can “breathe” and function in an optimal manner and prevent the growth of mold. Even painting the outside of a chimney can foster rot inside of it by decreasing possible air flow.

Chime caps can be a type of waterproofing, too. Among their many other benefits, having a chimney cap is a very basic step you can take to keeping your chimney dry. If you don’t have a cap, or it’s in disrepair, please check out our chimney caps page. Or give us a call at (404) 994-4371.

The chimney damper is also a very important component ion keeping your chimney in working order, as well as keeping out rain and preventing water damage. Keep it in good working order, or have and inspection performed if you’re not sure it’s working optimally.

Are the flakes or crumbling masonry (spalling) on the crown of your chimney? Your chimney crown is an important component in waterproofing. Any cracks or spalling can indicate potential leaks. Chimney crown inspection is part of our regular routine, and we can offer any necessary repairs.

Your flashing should be inspected, too. Any corrosion, dilapidated caulking, and holes can cause severe damage if left unchecked. Flashing is your most important line of defense when it comes to water damage in your chimney and even your home.

ARC Chimney Sweeps of Atlanta, GA is up to date on all of the latest waterproofing methods and techniques. If you have any concerns, or want to make sure that your chimney and home are safe from corrosion and mold from this type of water damage, call us right now. (404) 994-4371