Atlas EnergyShield® CGF (formerly Rboard®) is composed of a closed cell polyisocyanurate (polyiso) foam core, faced with a non-reflective coated glass-mat facer on both sides. The blowing agent used to produce the polyiso foam core does not contain any CFCs, HCFCs or HFCs. EnergyShield® CGF has zero Ozone Depletion Potential (ODP) and negligible Global Warming Potential (GWP). Atlas EnergyShield® CGF combines high R-value, enhanced durability from two coated glass-mat facers, and water resistive attributes in a high performance rigid wall insulation EnergyShield® CGF is suitable for a variety of continuous insulation (CI) applications.