IKOTherm® III polyisocyanurate foam insulation has a non-organic coating bonded to a fiberglass strand mat for superior dimensional stability and resistance to moisture. The product is a rigid, polyisocyanurate foam insulation with a high thermal R-value that provides outstanding insulation protection, helping to reduce heating and cooling costs. IKOTherm III is available in two board sizes and a range of thicknesses and tapers to meet a variety of insulation needs.