Our Gyproc ThermaLine laminates comprise of plasterboard (thermal conductivity 0.19 W/mK) and rigid foam insulation (thermal conductivity of the foam ranges from 0.02 to 0.04 W/mK depending on type).
This can be achieved either externally (EWI) using an insulated render system such as Weber, alternatively this can be achieved internally (IWI) using a frame system (such as our GypLyner Universal) comprising of insulation within the cavity or through the use of an insulation backed plasterboard (installed in one of our DriLyner systems). Please refer to White Book Chapter 07 Section 01 Page 02 for an overview of our British Gypsum wall linings range.