Spray foam insulation can be applied behind concrete block walls to enhance both thermal and moisture performance
It fills gaps, cracks, and voids that traditional insulation might miss, creating a continuous barrier that reduces air leaks and prevents drafts. Closed-cell spray foam also adds structural strength to the wall and acts as a moisture and vapor barrier, helping to prevent mold and water damage.
Proper installation is crucial to avoid trapping moisture inside the blocks or causing uneven expansion. Overall, it is an effective solution for increasing energy efficiency, comfort, and durability in buildings with concrete block walls.