Homeowners with partial basements or crawl spaces seem to be experiencing the most problems, but any homeowner can be troubled by mold. It ' s usually easy to spot on foundation walls, floor joists or on the soil surface in a crawl space. If heating and cooling ducts are routed through the crawl space, it ' s also possible that musty odors or mold spores will be transferred to other areas of the house, she said.
Mold can cause health problems for people who suffer from allergies.
Extensions on down spouts that carry water away from the house into the yard can be helpful. Splash blocks also can direct water away from the house. To prevent water from pooling or puddling around the house, the surrounding ground should be graded to slope downward at least six inches for each 10 feet of distance away from the house. Grade soil against the foundation, lower the elevation of the yard, or both. Level the floor.