Elevate HailGard Composite Board roof insulation consists of a closed-cell polyisocyanurate foam core laminated to a black glass reinforced mat facer on one side and oriented strand board on the other side. It provides outstanding thermal performance and was designed as a component of the Holcim Platinum System. Elevate HailGard Composite Board is suitable for use with other types of commercial roofing systems. All Elevate polyisocyanurate foam insulations use EPA accepted blowing agents and qualify under the Federal Procurement Regulation for Recycled Material. Elevate HailGard insulation with ISOGARD™ Foam Technology incorporates a HCFC-free blowing agent that does not contribute to the depletion of the ozone (ODP-free).