Mark has been doing ‘thermal bridge calculations’ on our house. With Passivhaus, the goal is to make the building as air-tight and insulated as possible. Weaknesses often lie in the details —where differing materials connect or gaps occur. Obviously we don’t want any weaknesses. We want a fortress of thermal resistance, which is exactly what Mark’s models are showing.
The image above is a thermal bridge calculation on where our walls meet the slab. By all accounts, it looks excellent. Uniform heat distribution throughout. The inside sits at a comfortable 20•C and the outside at 0•C. If we had any gaps or weaknesses you’d see the warmer colours leaching their way out to the exterior. Instead, we have magical, rainbow coloured walls :)