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Three Ways Water Ruins Your Chimney

If you have a masonry fireplace and chimney, water is the number one enemy of your chimney, according to the Chimney Safety Institute of America (CSIA). Constructed of both masonry and metal materials, the bricks, mortar, concrete, stone, flue tile, steel, and cast iron used to construct your chimney are all adversely affected by water penetration and direct contact to water. At Bulldog Chimney Sweeps, our CSIA-certified technicians have years of experience of dealing with leaky chimneys, and after doing so many chimney repairs due to water penetration, we strongly recommend you waterproof your chimney as well as have customized flashing installed to keep the water out. These preventive measures can save your masonry chimney from these following three water damage scenarios:

Worried that water may have made its way into your chimney? We'll be glad to schedule a time to come for an inspection.

Worried that water may have made its way into your chimney? We’ll be glad to schedule a time to come for an inspection.

  1. cracking and eroding the chimney crown Your chimney crown should serve as the waterproof seal on the top of your chimney; however, not every chimney crown is built to last. At least two inches thick at its thinnest point, a high-quality chimney crown should extend past the edges of your chimney top to drain water away from the chimney and off the roof. A shield from the elements, your chimney crown should be designed to withstand the corrosion and abuse from rain and snow; however, a poorly-designed crown that is not thick enough or does not have the correct angles for draining can easily be damaged from pooled water sitting on the crown and eating through it, leaving you with an unprotected chimney. Fortunately, Bulldog Chimney Sweeps can guarantee you a chimney crown that will not crack because of our technicians’ skilled expertise in building a perfectly-angled chimney crown, coated with a top-quality waterproofing sealant.
  2. spalling This masonry term refers to the bricks, concrete, and mortar of your chimney breaking apart, due to water penetration damage. One of the main causes of spalling is the freeze-thaw process that occurs when water has penetrated into the bricks and mortar of your chimney and freezes during the cold, winter temperatures. When this water thaws, it expands, which causes the bricks and mortar to split apart and flake. Spalling can cause serious structural damage to your chimney, so be on the lookout for loose bricks and chipped mortar on the exterior of your chimney when the weather warms back up after a deep freeze. If you notice any spalling, contact Bulldog Chimney Sweeps as our trained masons can repair the damaged masonry as well as apply a waterproofing agent to prevent spalling from occurring again.
  3. rusting or cracking of the chimney flue liner No matter if you have a metal or clay chimney flue liner, water penetration of your chimney can damage both kinds. Of course, rusting will become an issue if your metal flue liner is exposed to water, and rust damage can cause the liner to weaken and deteriorate. If you have a clay flue liner, water penetration can cause cracking and eroding. A damaged chimney flue liner can lead to serious problems, including carbon monoxide poisoning. The technicians at Bulldog Chimney Sweeps can install durable stainless steel liners and Golden Flue cast masonry liners, and they are also experienced in using HeatShield, which can repair cracked clay liners or even construct a new clay liner.

If you have not had a waterproofing treatment applied to your chimney, contact Bulldog Chimney Sweeps today to arrange a visit from our CSIA-certified technicians. We are happy to prevent you from water ruining your chimney.