Frame UK supplied & erected the timber frame panels, posi-joists & roof trusses for 18 Passivhaus units in Dartmoor, Devon. This development is one of the largest of its kind in the South West and the first in the world to be built on a National Park. Early air test results indicate that the performance of the dwellings will exceed that of the already high Passivhaus requirements. Our closed panel system achieves a U-Value of 0.1W/m2k with an air tightness rating close to zero, making these homes some of the most energy efficient in the UK.