WHAT IS HeatBloc-75?
HeatBloc-75 is an aluminum colored, water-based, low emissivity (low-e) coating. When applied to building materials such as plywood, OSB or plasterboard, HeatBloc-75 lowers their surface emissivity to 0.25 or lower, thereby blocking 75% of the radiant heat trying to enter the home. It is classified by ASTM as an Interior Radiation Control Coating (IRCC) and may be effectively used as an interior radiant barrier.