FOMO P10695 II-75 Handi-Foam Spray Foam - SPF Roof Patch Handi-Foam SPF Roof Patch is designed for application where higher compressive strengths are required Patented Handi-Gun Dispensing Unit Contains 75 Square Feet at 1" Thick Handi-Foam SPF Roof Patch is used to repair pin holes, cracks and patch polyurethane roofs after equipment changes SPF Roof Patch maintains the roofs' seamless, monolithic seal which prevents air and moisture infiltration R-value of 6-7 per inch