Crawl spaces are typically dirty, dark, humid and moist, which makes the area a perfect breeding ground for mold and mildew. A crawl space that is filled with mold and mildew will have a strong musty odor. This musty odor can drift up into your home, filling it with an unpleasant smell.
Because mold eats or digests what it is growing on, it can damage a building and its furnishings. If left unchecked, mold eventually can cause structural damage to building materials. Molds gradually destroy the things they grow on.
You can prevent damage to buildings and building contents, save money and avoid potential health problems by controlling moisture and eliminating mold growth by proper vapor barrier installation as well as circulation fans.