Mirafoam MKS is an extruded polystyrene foam thermal insulation material widely used in residential buildings to improve energy consumption efficiency of indoor heating and cooling system. It has the highest standard of the thermal insulation performance (0.028W/mK) in the industry and excellent dew-proofing performance. The product weight is 35 kg/m3. Mirafoam MKS is available in thirteen thicknesses ranging from 20mm to 100mm. Mirafoam MKS is a non-fluorocarbon product that does not use chlorofluorocarbons as foaming agents. It is also a F☆☆☆☆ labeled product that contains no formaldehyde and is certified as compliant with the 4VOC standard. It conforms to the “specified procurement items (thermal insulating materials) of the Green Purchasing Law and is a certified product of “Top Runner Program for the building materials where Ministry of Economy, Trading, and Industry of Japan defines standards on energy-saving performances.