More than 50% of homes in America have a mold problem, according to This Old House. While it’s common for bathrooms , kitchens and bedrooms to develop a mold problem, homeowners rarely consider looking for it in their chimney and fireplace. However, moldy chimneys and fireplaces are more common than you think, and could be the reason for the musty smell in your home , so it’s crucial you get rid of it once and for all.

Getting to the root cause

There are several different parts of your chimney that could be to blame for mold growth. As a general rule, it could be one of four things causing the mold:

• A lack of ventilation
• A damaged chimney crown
• The brick and mortar
• A damaged chimney cap

Mold occurs in damp and cold places, so when there’s poor ventilation, any damp that does get in has nowhere to go and causes mold. If the chimney crown or chimney cap fail, this can add to the amount of moisture that gets into your chimney, thus worsening the problem. Meanwhile failing to waterproof the brick and mortar that sits within the chimney allows an increasing amount of water to build up, and will quickly lead to mold growth.

Clean up operation

When you suspect that mold has taken over your chimney and fireplace, you should cease using it and arrange for it to be cleaned. If there’s just a small amount of mold visible then you can clean it with an anti-fungal spray and a scrubbing brush. However, it’s best to call in an expert mold cleaning service, as with a chimney, you can never be sure how far the mold has spread or the true extent of the problem . To tackle mold fully, a mold remediation company will thoroughly inspect, assess, and test your chimney and fireplace. From there, they’ll treat the mold with an anti-microbial system, before checking that the mold hasn’t spread further around your home.

Solving the problem

Once the mold from your chimney and fireplace have been professionally removed, you’ll find that your home will instantly smell better. To ensure that things stay this way, you’ll need to tackle the root cause of the problem. This means replacing any faulty parts of your chimney, installing adequate ventilation, and damp-sealing all the bricks and mortar in and around the chimney. It’s also a wise idea to have your chimney professionally inspected annually. An inspection will identify any damp problems early on so that you can take action to remedy them before the mold returns and ruins the inside of the chimney, emitting that annoying musty odor .

Just like any part of your home, your chimney and fireplace are susceptible to damp and mold problems. But there’s no need to worry if you do suspect that mold is invading your chimney, as it’s simple enough to remove it. And, so long as you take preventative action to keep it at bay for good, you won’t have to deal with again.