GAF has released its ThermaCal Wall Insulation Panels, which are designed to add insulation value to the outside of structural exterior sidewalls and can be fastened to outside wall sheathing, metal or masonry walls. They serve as a nailable base for exterior sidewall coverings. The panels help reduce heat loss and cold drive into the space and can reduce associated energy costs and meet the increased R-value energy-code requirements being adopted in certain climate zones. Installing ThermaCal Wall Panels helps eliminate thermal bridging by covering the studs while adding continuous insulation to the rest of the wall.