When a crawl space is exposed to a dirt floor, water vapor from the earth rises into the space, increasing the relative humidity. High relative humidity coupled with warm temperatures and an organic food source leads to mold and mildew growth.
Dark, moist, crawl spaces are the ideal environment for pests, rodents, critters, and snakes.
In your home, you may notice cracks above your doors or sticking doors and windows. This is typically a sign of foundation settlement.
Stair-step cracks are often a signal that your foundation is settling. Over time, as settlement continues, the crack will widen.
Mud tubes are made of small particles of dirt and wood that protect termites as they travel. Termites love damp crawl spaces and moist wood.
Damp crawl spaces, like this one in Saint Stephens Church, VA, are a haven for pests. The home also has common signs of foundation settlement.