Due to being below grade, basements naturally are cold and damp. In addition to this natural feature, uninsulated box sills in basements can make the space feel even colder.
Box sills are located where the ceiling joists (those that support the first floor of the house) meet the exterior walls of the home. This is an area that contains little building material which makes it even more vulnerable to energy loss. In addition, any heat that is in the basement rises to the ceiling and is the lost through this area that does not have insulation and likely has air leaks. We recommend installing fiberglass batts in basement box sills to maintain a consistent temperature in this area of the home.
Crawl spaces can create headaches for homeowners. A crawl space is susceptible to moisture and deterioration problems. Because the soil has high humidity, a crawl space naturally becomes damp, as the crawl space is in direct contact with the soil. Damp environments are unhealthy, harboring mold and creating an ideal living space for pests.
This damp space is not isolated to the area below your home. Since the natural airflow of a home is from bottom to top (ground to sky), the moist air (and everything in it) flows up and into the living areas of the home as your home naturally breathes. We use R-19 fiberglass batt insulation to insulate crawl spaces of homes.