Passivhaus Wall

Passivhaus walls depend on continuous insulation, an unbroken airtight layer and minimal thermal bridging at every junction. This category includes Passivhaus timber frame walls with airtightness and wind-tightness details, ICF walls, solid concrete walls with external insulation, and masonry walls with Larsen trusses, along with their junctions with foundations, roofs and windows.

Are these details Passivhaus certified? No. They show approaches used on Passivhaus projects, but certification depends on the whole building, its PHPP modelling and the products used. Check details with your Passivhaus designer.

What’s the difference between airtightness and wind-tightness? The airtight layer, on the warm side, stops warm moist air leaking out through the fabric. The wind-tight layer, on the cold side, stops cold air moving through the insulation. Our details cover both.