How to Prevent Mold in Your Chimney

Mold in your chimney is not something to ignore. It presents a health risk to anyone in your home and indicates that you have a moisture issue in your chimney.

What Causes Mold in a Chimney?

Like mold anywhere, fireplace and chimney mold can cause a musty odor, alerting you to the problem. As soon as you know there is mold growing in your chimney, get it fixed properly and figure out what caused it in the first place.


Mold in your fireplace and chimney is caused by moisture that is somehow getting inside. You might have a leak in your chimney cap or somewhere in the chimney itself. 

Signs Your Chimney Has Mold

In the early stages of mold growth in your chimney, you might not know it is there. As time goes on, however, you will begin to notice the telltale signs.

Musty odor

Mold causes a musty odor that might be more noticeable in the warmer months when you are burning a fire less often. 

People in the house getting sick

Mold growth can cause allergic reactions like sore throats, headaches, and fatigue. It can also weaken the immune system, making you and your family more susceptible to colds and sicknesses of all kinds. 

Does Mold in Chimney Go Away on its Own?

Mold can go dormant if it no longer has access to its ideal growing environment. However, the spores are still there.

Don’t wait for mold to go away on its own. You need to hire professionals to remove it for you. Don’t attempt to do it yourself, either – this can disrupt the spores and put them into the air, making them possibly even more dangerous. 

Mold in Fireplace

Mold spores can be present in your fireplace as well as your chimney. If your fireplace has poor ventilation and too much moisture, mold problems quickly arise, especially when you aren’t regularly using the fireplace. 

mold in fireplacemo

Black Mold in Chimney

There are different types of mold and mildew. Black mold is one of the most well-known and appears as a black growth. If you are afraid of finding mold in your chimney but suspect you have it, call our professional chimney sweeps to do an inspection

mold in chimney

Chimney Mold Removal

Removing mold from your chimney can be done without a lot of trouble. However, it must be done right, which means it must be done professionally. 

At Power’s Chimney and Masonry, we have the experience, tools, and knowledge to get the job done right. Our team of certified chimney sweeps will make sure that your chimney and fireplace are mold-free and leak-free!

How to Get Rid of Black Mold in a Chimney

There are plenty of wrong ways to try to remove mold from a chimney. Unfortunately, doing it yourself (or hiring someone who doesn’t really know what they are doing) can cause more problems and lead to more mold growth long term.

Chimney Sweep to Clear Out the Mold

Hiring a professional chimney sweeper is the right way to clear out the mold. We’ll do it right, the first time!

How To Prevent Mold in Your Chimney 

Ensuring your chimney stays mold-free after being cleaned is vital. There are a few factors to consider, besides making sure to prevent water from getting into the chimney.

Getting a Bi-annual Chimney Sweep by Professionals

Scheduling a bi-annual chimney sweep by Power’s Chimney and Masonry has multiple benefits. Besides making sure your brick and mortar (or stone) are not broken and your chimney crown is in good shape, this regular cleaning will remove any mold that is beginning to grow there.

Quality Chimney Caps 

Good, quality chimney caps protect the chimney from water damage, animals, and weather. They also prevent sparks from coming out of the chimney and lighting fires on the roof or nearby trees.

Chimney Waterproofing 

Regular chimney waterproofing keeps moisture from getting into the chimney and prevents fueling mold growth. 

Areas we service

Power’s Chimney and Masonry serves the Seattle area with expertise and professionalism. Call us for all of your chimney needs!

  • Arlington
  • Everett
  • Edmonds
  • Seattle
  • Mercer Island
  • Bellevue
  • Kirkland
  • Woodinville
  • South Snohomish
  • North King County

Do you suspect mold in your chimney?