Knauf Thermal Laminate Insulated Plasterboard is only available in tapered edge. This product is used to provide a basic level of improvement to thermal insulation, making it suitable for rooms where only a low level of insulation is needed, such as bedrooms. The board is mounted to a polystyrene insulator which is CFC and HCFC free and it is environmentally friendly with a reduction in CO2 emissions . There is a Thermal conductivity of 0.038W/mK For any further guidance or information regarding this product and its uses, please speak to a member of our sales team by calling directly today. and they would be happy to help.