Environmental Chimney Sweep Inc.

Basic Chimney Sweep & Repair Blog

Chimney Mold: An Explainer

What You Need to Know About Mold

Taking care of your chimney isn’t easy. It requires a lot of time, materials, skill and constant attention. We need to constantly monitor and maintain our chimneys in order to ensure our home and our family’s safety.

Every year, there are a number of homeowners from all over, emailing and calling our friendly team at Basic Chimney Sweep & Repair to inquire about each of their chimney concerns. From tips on prevention up to simple how-to’s, we’ve made sure to respond to as many of your questions as we possibly can.

You have questions about the growth of mold in your chimney? We have answers.

You have questions about the growth of mold in your chimney? We have answers.

We are frequently asked about one concern – it’s about chimney mold and its impact on our safety.

So, we’ve decided to come up with a compilation of a few important facts and helpful information that you might want to know regarding chimney molds.

Water is the Enemy

Aside from water being known to cause damage in your chimney’s mortar and brick, and not to mention the risk it has on potentially damaging your chimney’s structural integrity, water is our number one enemy because it is the key ingredient in mold proliferation.

Signs and Indications

What are the early signs to look out for that are indicative of mold growth? To be able to detect mold growth without actually going up your chimney to take a peak would require you to be very observant. First, you need to take note of the season and the weather. Since the potential for mold growth greatly increases with the presence of water, you need to be more alert whenever it’s warm, rainy or humid. Second, you need to take note of the smell. If you notice a musky odor circulating, then that is definitely a tell-tale sign of mold growth.

Potential Risks

Every person has a different reaction to certain substances. The same is true with a person’s reaction to molds. Here are a few of the common physical reactions attributed to mold growth:

  • Dizziness
  • Breathing problems
  • Flu-like symptoms
  • Memory loss
  • Weakened immune system

Of course, these reactions vary depending on the severity of the mold growth and exposure and the person’s physical state upon contact.

Preventive Measures

In order to prevent the possibility of mold growth, the best thing for you to do is to waterproof your chimneys. A waterproofing sealant can be applied on the walls of your chimney. Another preventive measure is to install a chimney cap. Chimney caps cover the opening so that little or no water at all can enter. Eliminating the possibility of water also eliminates the possibility of mild growth in your chimney.


By Ronald Caillais on June 30th, 2014 | Tagged with: Tags: , , , , , , , , , | Comments Off on Chimney Mold: An Explainer
Please call us at 828-243-0098 to schedule an appointment today. All Major Credit Cards Accepted.
National Chimney Sweeps Guild Chimney Safety Institute of America