THERMAX™ (ci) Exterior Insulation consists of a glass-fiber-reinforced polyisocyanurate foam core faced with nominal embossed BLUE™ thermoset-coated aluminum on one side and smooth, reflective aluminum on the other. The integral durable thermoset coated aluminum facer provides a drainage plane and water resistive barrier, eliminating the extra step of installing a membrane or building wrap when used in conjunction with Dow Flashing products. The foam core provides one of the highest R-values(2) available (R-6.5 at 1") for immediate insulation and weather protection on the job site, as well as long-term thermal performance. THERMAX™ (ci) Exterior Insulation can remain uncovered up to six months. With its low perm rating and high insulating value, THERMAX™ (ci) Exterior Insulation can reduce the potential for condensation within the wall assembly. THERMAX™ products feature a distinct free-rise technology for better product consistency, durability and fire performance than generic polyisocyanurate insulations.