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.
Cost closed cell spray foam attic.
Attic spray foam insulation total average cost per square foot 1 73 2 58 3 67.
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.
The average cost of spray foam insulation installation is 2 128 with most homeowners paying between 1 463 and 2 926.
For closed cell insulation the average cost works out to 5 400.
Closed cell spray foam insulation total average cost per square foot.
On average most homeowners pay somewhere in the range of 1 463 and 2 926.
There is an economy of scale involved so the larger the square footage the smaller the per square footage cost.
Attic spray foam insulation total 165 00 180 00 225 00 290 00 335 00 400 00.
In this case the typical expense of spray foam insulation installation is 2 128.
Closed cell closed cell insulation will cost between 1 00 and 2 00 per board foot to install.
Open cell spray foam costs typically 0 25 to 0 50 per board foot and closed cell spray foam ranges from 0 90 to 1 50 per board foot.
From there multiply the cost of the foam.
Attic spray foam insulation installation cost 125 00 135 00 175 00 235 00 275 00 325 00.