A Passivhaus combines high level comfort with very low energy consumption. The most important principle of a PassivHaus is insulation applied continuously around the building envelope without thermal bridging. This significantly reduces heat loss, especially during winter. Internal surfaces are almost the same as the indoor air temperature due to the high levels of insulation. This leads to a very comfortable indoor climate and avoids damage caused by the humidity of indoor air. There are five main components which form the principals of 'Passivhaus design' these being:
- Exceptionally high levels of thermal insulation
- Well insulated window frames with triple low -e glazing
- Thermal bridge free construction
- Airtight building envelope (uk building regulation 10m3/h, Passivhaus 0.6m3/h or less)
- Comfort ventilation with heat recovery
The high efficiency of a Passivhaus dramatically reduces Co2 emissions and reduces the demand on natural resources. The Passivhaus standard has been around for many years in Europe and has been tried and tested thousands of times. Recently more and more projects are being completed here in the UK with great success.
JPH Architects are Certified European Passivhaus Designers (CEPH) and can offer a full design service including submission to the BRE for assessment and certification for Passivhaus, thus ensuring the design is detailed to Passivhaus Standards . This service will include the assessment of a design using the PHPP calculation tool.