(563) 582-5156
925 Century Dr. Dubuque, IA 52002
Home Tap to Call Now

Do Chimney Sealants Really Make a Difference?

Masonry chimneys are highly susceptible to moisture from rain, snow, sleet, and ice. The design of chimneys helps to protect them from moisture intrusion, but vigilance is necessary to avoid major damage. Some chimney experts recommend having waterproofing aka chimney sealant applied to help keep moisture out, but does chimney sealant truly make a difference?

Chimney Repair, dubuque iaYes, Chimney Sealants Work, If…

Homeowners certainly don’t need to pile unnecessary expenses onto the costs of home maintenance, and chimney professionals understand that. The recommendation to apply chimney sealant to a chimney is intended to help customers avoid the cost of chimney repairs. It is important to note, however, that a certain type of sealant should be used and a professional should apply the waterproofing.

 

It’s a mistake to think that any type of sealant will work for a chimney. Bricks are made to be porous for good reason. The porousness allows the material to breathe, and it allows moisture on the surface to evaporate. The correct sealant to use is one that is specifically made for brickwork and allows the bricks to breathe. 

If the sealant is incorrectly applied, it won’t do the intended job of protecting the masonry from water. Simply call on chimney experts who have experience in the application of sealant, and you can enjoy peace of mind knowing that your vulnerable chimney has an added layer of protection and is less prone to sustain moisture damage. Chimney sealants are typically effective for many years.

What Does Moisture Do to Chimneys, Anyway?

Water inside a chimney system leads to complete deterioration if enough time goes by before repairs are made. The crux of the problem involves freezing and thawing cycles in winter. The water inside the brick expands when it freezes, causing the brick to expand, as well. When thawing occurs, the bricks contract. The movement has a devastating effect. First, spalling will occur, which means the brick face will break off. Then masonry repair is needed because the bricks affected would otherwise just continue to deteriorate, resulting in a leaning or toppling chimney.

leaky chimney repair in Platteville WIWhy Doesn’t the Chimney Design Keep Water Out?

The mortar between bricks helps to create a watertight protective seal that prevents excess moisture from entering the masonry. The problem is that mortar only lasts about a fourth as long as masonry. Mortar deterioration, if caught early, can be fixed with a cost-saving procedure called “tuckpointing.” The mortar is removed and then replaced, which strengthens the structure and restores the previous level of protection from moisture intrusion.

The chimney crown at the top of the chimney extends past the chimney stack, and the crown has a lip. This design helps prevent water from constantly flowing over the chimney stack. The chimney crown is susceptible to damage, though, because it is constantly exposed to harsh weather conditions. When the chimney crown cracks, water seeps into the masonry system. Sealant helps to prevent chimney crown damage.

Waterproofing is a good idea. Otherwise, chimney experts at Dubuque Fireplace & Heating would not recommend it. For chimney inspections, chimney repairs, chimney cleaning, and application of chimney sealant, contact us at Dubuque Fireplace & Heating. See the contact information below.

 

Dubuque Fireplace & Patio
925 Century Drive, Dubuque, Iowa
Phone – (563) 582-5156

 

Chimney Specialists Inc.
869 Main Street, Highland, WI
Phone – (608) 929-4887 / Toll Free (800) 395-6660

Call Now Button