Causes of Mildew

K.E. McNURNEY,inc.
Interior Plaster & Drywall Construction

Causes of Mildew

Mildew is a black, sometimes white, greenish growth produced on many kinds of surfaces by molds. Molds are simple plants belonging to the group known as fungi. Though molds are always present in the air, those that cause mildew need moisture and certain temperatures in order to grow. They commonly develop in humid summer weather, especially in houses that are closed. They grow fastest at temperatures between 75 F. and 85 F.

These molds grow on anything from which they can get enough food. In homes they develop most often on cotton, linen, rayon, silk, wool, leather, wood, and paper. Many synthetic fibers are resistant to mildew.

Molds that cause mildew flourish wherever it is damp, warm, poorly lighted, and/or where air is not circulated--in cellars, crawl spaces, basements, clothing closets; on draperies and rugs in basement recreation rooms, on shower curtains, and on damp clothes rolled up for ironing. These molds are also likely in a newly built house because of moisture in the building materials.

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