Spray Foam Insulation Diy Cost. Over at least seven years (based on a cost of £1,000, saving you £140 per year on your energy bills. There are many types of insulation, but you’ve set your sights on spray foam insulation.
For a 200 square foot wall cavity to be filled with spray foam insulation will cost between $300 and $600 (again, the precise location within the range is determined by the factors above). What sets it apart is the inclusion of multiple fan nozzles and cone nozzles. Still, this can usually become quite costly in the end.
On average, spray foam costs $7 per square foot.
Over at least seven years (based on a cost of £1,000, saving you £140 per year on your energy bills. This kit can be used in open walls, attics, and crawl spaces. The average cost to have spray foam professionally installed is about $2,400 for a 1,600 sq. For a thin layer of spray foam we estimate around £20 per square metre but this can rise to £50 per square metre in thicker applications.