Absolutely. Spray foam insulation produces an airtight seal that also functions as a moisture barrier. This prevents water from penetrating the walls and reduces the likelihood that mold and mildew will start to grow inside the structure. Spray foam insulation helps to keep a dry and healthy indoor environment for your property in DeKalb County, AL by decreasing gaps and cracks where moisture can enter. This can be accomplished by eliminating air gaps and cracks.