Residential Foam Applications Spray Polyurethane Foam (SPF) has been recognized as one of the best Insulation products available today. If you consider the fact that Spray foam is 40% more efficient than conventional insulation due to its air sealing qualities, increased comfort in the house because of no drafts and a clean, dust-free environment, you will get tremendous thermal resistance with just three inches applied.
With rigid spray-in-place polyurethane foam, there is no convection within the wall cavity as the cold and warm temperatures meet. Two inches of foam will not need a vapor barrier, and the R-Value is not affected by humidity. Gone are the days of your conventional insulation having the potential settling and/or matting issues that affect insulation efficiency.
Spray Polyurethane foam does not change so when sprayed in your walls, years from now, it will not have settled, matted or become full of dust and molds. Because polyurethane foam is a “closed cell” insulation, dust cannot penetrate the insulation. There is no food value, so bacteria and molds will not grow.
Even though polyurethane foam is more expensive than traditional insulation, it will put money back in your pocket with reduced energy bills. So if the additional cost is added to a mortgage, your very first energy bill will cover the extra cost on your mortgage.
Typically within five to six years the added cost will have been recovered.
Be sure when using a spray foam contractor he is a qualified applicator of a CCMC material. The building will not pass inspection, qualify for insurance or CHMC mortgage unless it is a approved material and your contractor is qualified.