Excessive moisture builds up from infiltration and everyday activities. These areas also lack ventilation which leads to a buildup of pollutants and moisture saturation. Tighter homes trap moisture and pollutants, creating an unhealthy and unsafe environment. Natural air flow pulls the pollutants upwards into the living areas affecting the whole house. Basements are notorious for being damp. Be sure that your landscape and gutters are not bringing water to your foundation. Proper ventilation and dehumidification will alleviate the moisture build up in basements.