A video detailing the installation of polyurethane panels on the Passive House. The external walls are made from brick work blocks. The polyurethane boards you see being installed are 180 mm thick. In total the wall will be 450 mm thick, including a remaining 20-30 mm cavity between the insulation and the external wall. This will result in an external wall U-value of 0.10/0.11 W/m2K.