Roofs are among the most exposed elements of a building. Throughout the day, solar radiation can heat the roof surface significantly, allowing unwanted heat to transfer towards the occupied or working areas below. For industrial buildings, warehouses and commercial facilities, this additional heat gain can affect indoor comfort and increase the cooling load placed on mechanical systems. XPS Boards, or Extruded Polystyrene insulation boards, provide a practical solution for underdeck thermal insulation where low thermal conductivity, moisture resistance and dimensional stability are important. Thermal Scientific Works supplies XPS Boards for insulation applications including underdeck and terrace insulation, with solutions selected according to individual project requirements.