The Langley Passivhaus has progressed further and the thermal envelope is now completed with the full injected wall and roof insulation and all windows and doors fully installed. The first air test is completed giving a very good result thanks to the build team of 0.26 ACH which is below half of the required value of 0.6 ACH. The timber cladding to the first floor is completed and roof and internal wall finishes now progressing.