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Waterproofing is one of the best ways to extend the life of your chimney. If you can keep water away from the mortar and masonry of a chimney, these materials will naturally last longer. You may end up having to do a partial or complete rebuild over time if the elements get to your masonry chimney, however. Sometimes, you may be able to do some less expensive repairs followed by waterproofing to help the life of the masonry structure.

What is Spalling?

Because they are porous and absorb water, spalling takes place in bricks when the water freezes and expands like a frozen ice-cube. This causes the brick to break apart from the inside out. If you’ve lived in the Louisville area for more than a year, you’re aware that we potentially experience rain and freezing temperatures in the same day for at least 4 months out of the year. As this 9% expansion and release continues, you can then understand why the chimney actually is deteriorating at a rate that is approximately 4 time that of your home.

How to Prevent Spalling

Spalling damage is preventable with an appropriate application of masonry water repellent. Masonry sealant and water repellant are not the same and knowing the difference can make or break the life of your chimney. Placing coats of sealers on the chimney will clog masonry pores and cause the surface to darken or appear glossy. When this happens, it means that water has actually been trapped in the brick, accelerating the deterioration. Masonry water repellents are vapor-permeable, meaning that water vapors can go through the brick without the brick absorbing water.

All American Chimney Services uses water repellent that has been proven effective and tested to ATSME514 standards and provides ten times the water protection of typical brands.

Call All American Chimney Service, LLC at 502-435-2364 or request an appointment online.

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