This homeowner called us hoping that we would be able to help him with his basement. It had a lot of issues, and one of those was that the basement was not properly insulated. The only insulation in the basement was fiberglass in the rim joist. (The rim joist is the perimeter of the floor framing system along the exterior of the house). Unfortunately, fiberglass insulation allows a lot of airflow through and around it.
Luckily, we had the perfect solution for this customer. We removed the fiberglass and replaced it with two-part closed cell spray foam. This spray foam expands and fills all cracks and gaps in the rim joist and over the sill plate. Now, this home will be much more comfortable, and there are no more air leaks in the basement!