Composite Insulation stocks high performing Goldfoam XPS extruded polystyrene insulation for use in roofs, walls and under floors. Goldfoam XPS is easy to install, waterproof and has high compressive strength. If you require premium PIR foam insulation panels, Composite Insulation supplies rigid insulation board from the leading manufacturers Celotex & TECH BOARD. For precast insulated concrete panels that reduce heating, cooling and maintenance costs choose leading brand Thermomass.