IKO Enertherm Insulated Plasterboard 2.4m x 1.2m x 37.5mm is a high-performance wall insulation with a plasterboard surface finish. It has a kraft paper facing on one side and a 12.5mm thick tapered edge, gypsum-based plasterboard laminated to the other side. This insulated plasterboard can also be used under rafters to reduce the overall heat loss through the roof and eliminate thermal bridging through the rafters. It is easy to install using either dot-and-dab adhesives or mechanical fixings to timber battens. IKO Insulated Plasterboard is a 100% CFC, HCFC, and HFC-free insulation board with a hard polyisocyanurate foam core.