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. The product is designed to be part of a hot or cold applied modified bitumen, single ply or built-up roof system. Lightweight and easy to handle, IKOTherm III is available in two board sizes and a range of thicknesses and tapers to meet a variety of insulation needs.