Atta Boy Inspection Spray Foam
Atta Boy Property Inspections Spray Foam Open-cell spray foam absorbs and holds water. It has a lower R-value per inch than closed-cell foam and is vapor-permeable. The R-value is R-3.5 to R-3.6 per inch, so filling a 2×4 cavity yields about an R-13. With proper application, Closed cell-foam will last the lifetime of your home.