1 The backslash divides the file name from the path to it, and one directory name from another directory name in a path. 2  You cannot use a backslash in the name for the actual file or directory because it is a reserved character that separates the names into components.
1 Open-cell spray foam costs $.40 to $.70 per board foot. 2  Closed-cell spray foam costs $.75 to $1 per board foot. 3  Expressed in terms of square feet, spray foam installation cost is $1.50 to $3.00 per square foot (for an average-sized home between 2,000 to 2,500 square feet, thatâs a total cost of $3,000 to $7,500.pray Foam Insulation Prices. While the function of spray foam insulationâto keep buildings warm during cold weather and cool during warm weatherâis the same as traditional pink fiberglass insulation, thatâs where the similarities between the two materials end.
Cost Of Spray Foam Insulation. Spray foam is available in two different types: open-cell spray foam which is usually $0.44 to $0.65 per board foot and closed-cell spray foam which is about $0.70 to $1 per board foot. The average cost to have spray foam professionally installed is about $1,728.ince spray foam takes up less space than other types of insulation -- fiberglass or blown-in insulation, for example -- you can change its thickness to meet the requirements of the application space. The average thickness of spray foam is three inches, but it can be made deeper if needed.