A homeowner in Goldvein, VA needed some insulation in his home. Heat moves from more to less - out of a building in winter and into a building in summer. Insulation is needed to slow this heat flow down. Closed cell spray foam adheres to all surfaces, expands in place, and air cannot pass through it. It is superior insulation with an R-value of 6.3 per inch. Closed cell spray foam weighs 2 lbs per cubic foot and special equipment is used to spray it.