Atlas EnergyShield Wall insulation is composed of a closed cell polyisocyanurate (polyiso) foam core, faced with tri-laminate foil. The blowing agent used to produce the polyiso foam core does not contain any CFCs, HCFCs or HFCs. EnergyShield has zero Ozone Depletion Potential (ODP) and negligible Global Warming Potential (GWP). EnergyShield combines high R-value, durable foil facers, and water resistive attributes in a high performance rigid wall insulation. EnergyShield is suitable for a variety of continuous insulation (CI) applications.