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Mold and Moisture

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Mold and mold spores are present throughout our environment both indoors and outdoors. When present indoors in significant amounts it can be an indoor air pollutant. When mold spores find the right conditions including temperature, moisture, and an organic substrate, mold is very likely to grow. When mold grows in our homes, it may indicate there is a moisture or humidity problem. Moisture to sustain mold growth may come from plumbing leaks, roof leaks, water leaking in around windows or doors, foundation leaks, etc.

High humidity in a home may be due to inadequate ventilation in bathrooms or kitchens, clothes dryers not properly vented to the outside, moisture infiltration through the foundation or walls, use of a humidifier or nebulizer, aquariums, misting house plants and even from our bodies. Inadequate insulation in walls and ceilings can create cold spots where moisture may condense and support mold growth. Cold window surfaces also can allow moisture to condense causing mold growth on the window sashes and sills.

Newer more energy efficient homes can sometimes be so tightly built that humidity levels rise if the home is poorly ventilated. Control of moisture and humidity levels can substantially reduce the presence of mold in a home. Please refer to the following resources to learn how to manage mold problems in your home:

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