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The Importance of Addressing Chimney Leaks

As we’ve stated many times before, water is a chimney’s worst enemy. When water or moisture gets into your chimney, it can cause a wide range of serious problems. Water will bring even the most well-built chimney to its knees, causing cracked mortar, flaking bricks and compromising its structural integrity. When water gets into the creosote inside your chimney liner, it eats into the mortar, accelerating the damage.

There are many possible causes for a chimney leak, including:

 flashingproblems Flashing problems.
mrsmokestack-crackedchimneycrown Cracked or defective chimney crowns.
mrsmokestack-missingchimneycap Missing or defective chimney caps.
 Chimney Cracks in Mortar small - Raleigh NC - Mr. Smoketack Chimney Service Cracks and gaps in the mortar joints and masonry construction.


Because it sticks up above the roof, your chimney is constantly exposed to the elements — wind, snow, rain and the freezing and thawing cycles of winter. Masonry materials are very porous, so they absorb a large amount of water. The constant cycle of freezing and thawing puts a large amount of stress on the chimney, leading to cracking, chimney leaks and structural damage.

Protect Yourself Against Chimney Leaks



Chimney Chase Cover Before 01 - Raleigh NC - Mr Smokestack Chimney Chase Cover After 02 - Raleigh NC - Mr Smokestack

If your chimney is leaking, we urge you to have a qualified chimney professional inspect it immediately. We cannot overstress how important this is. Water can quickly cause serious damage to the structure of your chimney. The longer this damage is allowed to continue, the more costly the repairs are likely to be. Water damage can be a slow process that largely goes unnoticed. In many cases, by the time you notice that there is a problem, there could already be serious damage.

There are several ways to protect yourself against chimney leaks:

  • Make sure you have a professional-grade chimney cap installed.
  • Replace or repair a damaged chimney crown.
  • Repair chimney mortar cracks or gaps.
  • Inspect and repair any leaky flashing around your chimney.
  • Waterproof your chimney!

Don’t let a leaky chimney get out of hand. The CSIA-certified professionals at Mr. Smokestack can inspect your chimney and track down the source of any leaks or water problems.


Your dryer vent system is another potential source of fire hazard, so include regular inspection and cleaning as part of the chimney and vent services provided by Mr. Smokestack.

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Mr. Smoke Stack, LLC is a BBB Accredited Chimney Cleaning Company in Raleigh, NC Review Star Certified Reviews - Mr. Smokestack Chimney Service
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Robbie expertly diagnosed our leaky chimney and fixed it quickly. Still no leaks after about 8 months. Robbie also installed a wood stove for us. He and his crew went to great pains to ensure that the stove was inserted perfectly...even touching up the paint after it was in place. They also cleaned up after themselves. We will definitely use Robbie for any and all of our future chimney and stove needs and greatly recommend him.
~ Rob R.