Cost Of Closed Cell Foam In Attic
Closed cell spray foam insulation total average cost per square foot.
Cost of closed cell foam in attic. Foam insulation in attic material prices. There is an economy of scale involved so the larger the square footage the smaller the per square footage cost. Foam insulation in attic costs zip code sq. Open cell spray foam which usually costs 0 44 to 0 65 per board foot and closed cell spray foam which averages 1 to 1 50 per board foot.
Closed cell spray foam insulation total. Spray foam insulation works as alternative to traditional fiberglass insulation during construction or planning for construction. For open cell insulation the average price for a project this size would be 2 700. Open cell foams use water as a blowing agent.
Fiberglass batt insulation is priced by the roll or by the square foot. The average total cost to have spray foam professionally installed is about 2 406 or between 1 278 and 3 677. Open cell foam weighs 1 2 pound per cubic foot and closed cell weighs 2 lbs per cubic foot. Closed cell foams use enovate also known as 245fa.
For closed cell insulation the average cost works out to 5 400. Closed cell closed cell insulation will cost between 1 00 and 2 00 per board foot to install. Spray foam insulation price starts at about 0 60 or 60 cents per board foot for diy open cell spf with a top cost of about 80 cents. This is very important in situations where your code requires an r 21 for the wall but you only have a 2 4 stud because closed cell spray foam is the only way you would achieve the required r value to meet code.
From there multiply the cost of the foam. There are two types of spray foam insulation open cell and closed cell. The myth that open cell is more economical is bullshit. Open cell spray foam costs 0 25 to 0 50 per board foot and closed cell spray foam costs 0 90 to 1 50 per board foot.
Open and closed cell foam insulation use a blowing agent to forms the cells within it. Spray foam is available in two types. Closed cell spray foam insulation installation cost. That means if you used foam it green closed cell which is r 7 per inch it s r value for a 3 5 deep wall cavity would be r 24 5.
There is 300 difference there but the cost they give you is about a third difference and open cell foam at 12 inches will not give you the performance of 2 inches of closed.