‘How much does spray foam insulation cost?’ is far too vague a question. Every project is different, there are different types of spray foam, no two buildings are .How Much Does Insulation Cost? The Internet is just jam packed with estimates, approximations, and projections on the cost of insulation. There are charts, tables .The cost of spray foam insulation is usually expressed per board foot, which is a measure of volume not linear feet . board foot is equal to cubic inches, or a board that measures foot long and foot wide and inch thick. Open cell spray foam costs $. to $. per board foot..HomeAdvisor’s Spray Foam Insulation Cost Guide lists price information on adding or replacing spray foam insulation to an attic, wall, crawl.e, etc., as reported .
Spray foam is available in two different types open cell spray foam which is usually $. to $. per board foot and closed cell spray foam which is about $ to $. per board foot. The average cost to have spray foam professionally installed is about $,..