POLYBIT® POLYFOAM SS 45A is a two-component, spray-applied polyurethane foam that creates a seamless, monolithic barrier against water vapor and air. Polyfoam SS 45A is an HCFC blown & CFC free, polymeric M.D.I based system for producing rigid urethane foam with a nominal applied density of 45 kg/m3 by spray process. The system may be applied to substrates where the surface temperature is of the order of 25 - 30°C.