About Spray Foam for Crawlspaces

Crawl spaces are a common entry point for cold air, leading to cold floors in the home above. Encapsulating the crawl space with closed cell spray foam creates a temperature barrier to prevent a cold floor above and improve the overall comfort of the home.

The best place to install attic insulation in a crawl space is the joist box. This area is where the floor joists meet the outside wall, and it is the only area in a crawl space that is exposed to the elements. Spray foam is the only type of insulation that can seal these gaps and protect this area from moisture, which can lead to mold and wood damage.

Before spray foam can be installed in a crawl space, any existing fiberglass insulation will be removed. If there is standing water in the crawl space, this will also need to be removed and a drainage system installed. Once the crawl space is clean and dry, closed cell spray foam will be sprayed on the walls and rim joist.

Attic Insulation Health Benefits: Cleaner Air and Greater Comfort

Historically, fiberglass has been the most common insulation used in homes. Fiberglass is the brightly colored batting-style insulation that is found in studs, rafters, and floor joists of homes. Fiberglass is a great option in new homes and for insulating attics, but it’s not the best choice for crawl spaces.

The batting is too bulky to fit between the joists in a crawl space, and it can cause problems with air flow. The batting also traps dust and allergens in the crawl space, which can promote mold and mildew. When disturbed, the fiberglass particles can release into the air and be inhaled by homeowners. This can lead to nosebleeds, itchiness, and other respiratory issues.

Spray Foam Genie Charlotte
635 Atando Ave Suite I, Charlotte, NC 28206, United States
(980) 381-2055