POLYBIT® POLYFOAM SS-40A is a two-component, spray-applied polyurethane foam that creates a seamless, monolithic barrier against water vapor and air. POLYFOAM SS-40A is an HFC-blown & CFC free, polymeric M.D.I based system for producing rigid urethane foam with a nominal core density of 40 kg/m3 by spray process. The system may be applied to substrates where the surface temperature is of the order of 25°C - 30°C.