Closed cell spray foam is a good fit in walls, attic spaces, pole barns, and basements. Basements are a great place for closed cell spray foam insulation because the unique properties of close cell spray foam act a vapor barrier and is exceptionally moisture-resistant. Closed cell spray foam is a perfect choice to spray on concrete or masonry walls as well. Using standard fiberglass insulation on a concrete or masonry wall is a poor choice as the concrete wicks water into the fiberglass, causing it to mold which can lead to serious health problems.