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What You Need to Know About Mold Growth on Window Sills

Mold growth on window sills can lead to a wide variety of problems. In addition to being a health hazard by causing allergies and other respiratory illnesses, mold can detract from your windows’ aesthetic appeal and compromise their life span. Today, local windows contractor Renewal by Andersen® of Atlanta takes a closer look at how this particular window issue can be prevented.

Causes of Mold Growth Inside Your Home

Mold forms on window sills when condensation or moisture inside humid areas, like attics, basements and bathrooms, build up around the window and is allowed to sit over a certain period. It also doesn’t help if it is blocked by curtains or drapes—this leads to mold growing undisturbed and hidden from view. It can also form on exterior window sills, especially if there are high levels of humidity outside your home.

Preventing Mold Growth on Window Sills

While you can’t prevent mold spores from getting into your home, there are some things you can do to prevent the growth of mold in certain areas of your home, including your window sills. Start by maintaining relative indoor humidity using a home humidifier/dehumidifier. This helps maintain indoor humidity relative to the outdoors by releasing or absorbing moisture as needed.

Also, ensure proper ventilation inside your home. Open your windows for at least 15 minutes each day to let fresh air in and take the indoor pollutants from stale air out, including mold spores. Make it a habit to change the air filters of your HVAC system, as well. Every windows company also recommends giving the existing windows a deep clean at least twice a year.

At Renewal by Andersen® of Atlanta, we offer top-notch replacement windows that are made of Fibrex®, an exclusive window frame material that combines the strength of natural wood and the low-maintenance qualities of vinyl. With its combination of reclaimed wood fibers and thermoplastic polymer, the material is guaranteed not to pit, crack or rot, much less accumulate moisture that causes mold.

To learn more about our replacement windows, give us a call at (404) 947-5300. You may also fill out our contact form to schedule a virtual consultation. We serve residents of Marietta, GA, and the surrounding communities.


"We are very pleased with the whole process of purchasing our windows - from the sales consultant, to the installation, to the finishing touches, to enjoying our beautiful windows"

Gerald & Jennifer, Cartersville GA (March 1)
May 25, 2016

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