Building Code Compliance
The air cells in the pumice aggregate used in the Litecrete mix provide in-built insulation. Litecrete 150 mm thick panels comply with the insulation requirements of the Building Code (H1 Energy Efficiency) when a 50 mm thick phenolic insulation board (Kooltherm K17 or similar) is glue fixed to the internal face of the Litecrete panel. The K17 board has a 10 mm plasterboard facing included in the 50 mm thickness. Thus, the overall external wall thickness is 200 mm = R 2.26.
