Cost Of Closed Cell Foam In Attic

Open and closed cell foam insulation use a blowing agent to forms the cells within it.
Cost of closed cell foam in attic. 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. From there multiply the cost of the foam. There is an economy of scale involved so the larger the square footage the smaller the per square footage cost. Open cell foam weighs 1 2 pound per cubic foot and closed cell weighs 2 lbs per cubic foot.
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. Open cell foams use water as a blowing agent. 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. For open cell insulation the average price for a project this size would be 2 700.
Spray foam is available in two types. Closed cell foams use enovate also known as 245fa. So if you have a 1 200 square foot attic and are planning on spraying the foam 3 inches thick multiply these two numbers to get 3 600 board feet. Closed cell spray foam insulation total average cost per square foot.
The average total cost to have spray foam professionally installed is about 2 406 or between 1 278 and 3 677. 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. Closed cell spray foam insulation cost is 1 25 2 00 per board foot for the material diy. The average cost of spray foam insulation installation is 2 128 with most homeowners paying between 1 463 and 2 926.
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. Foam insulation in attic costs zip code sq. Closed cell spray foam insulation installation cost. Closed cell spray foam insulation total.
There are two types of spray foam insulation open cell and closed cell. Closed cell closed cell insulation will cost between 1 00 and 2 00 per board foot to install. The myth that open cell is more economical is bullshit. Spray foam insulation works as alternative to traditional fiberglass insulation during construction or planning for construction.
Fiberglass batt insulation is priced by the roll or by the square foot.