How Do You Prevent Mold on Windowsills?


Quick Answer

Mold growth on windowsills is a common challenge because the area is an ideal meeting place for moisture and organic food sources, which combine to create mold. To prevent mold on windowsills, the food sources and the moisture must be controlled.

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Full Answer

Food sources for mold are found in all homes. They can include animal dander, dust mites, insect pieces, pollen and skin cells. Household dust is made up of these food sources. To help prevent mold, any place in the home where dust accumulates, such as windowsills, should be cleaned regularly.

To further help prevent mold, reduce the level of the organic food sources in the air, which will in turn leave fewer food sources to settle on windowsills. Vacuum with a HEPA filter vacuum. Install and regularly replace a high efficiency filter on the HVAC system. When dusting, use a damp cloth or electrostatic cloth. Otherwise, dust particles containing mold food sources will just be spread around.

In addition to limiting food sources, it is important to control moisture. Mold often occurs on windowsills because condensation on windows and frames creates moisture. Open windows regularly and use exhaust fans to expel moisture from the home. This is especially important after showering, which puts a lot of moisture in the air.

Even if the windows are not open, it is important to increase air flow around windowsills to reduce moisture. Use overhead ceiling fans and periodically open the drapes or blinds. Consider using a dehumidifier to reduce moisture in the home.

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