JM Corbond III closed-cell spray polyurethane foam (SPF) is a premium insulation solution, creating an advanced thermal, air and moisture barrier. This powerful insulation offers a maximum lift thickness of up to three inches in a single pass, providing an R-value of 19 at 3 inches and R-39 at 6 inches. JM Corbond III SPF has one of the highest-yields of any closed-cell foam insulation and can be installed in temperatures as low as 25 degrees Fahrenheit.
