This value may also change depending on the number of walls in a home.
Closed cell foam insulation cost.
Labor costs and thickness add to this total.
It s also used extensively in commercial development.
For closed cell insulation the average cost works out to 5 400.
For open cell insulation the average price for a project this size would be 2 700.
It costs approximately 1 500 to 2 250 to cover 1 500 square feet with one inch of closed cell spray foam insulation.
From there multiply the cost of the foam.