France: An historical building renovated to the Passive House standard in Saint-Etienne
Posting Date | 6 July 2012
Countries | France
An historical building (1902) has been renovated in Saint-Etienne (France) to become a 500 m² passive office building used by an architect (Atelier d’architecture Rivat).
Wood wool indoor insulation (100+140 mm for the walls, 80+200+40 mm for the roof) and new windows allow to reach a heating need value of 14 kWh/m²/year (to be compared to heating needs before renovation: 210 kWh/m²/year). A membrane has been positioned to reach a high airtightness level and slabs have been dissociated from walls to avoid thermal bridges.
A geothermal heat pump with two vertical ground loops (depth 90 m) has been installed together with an underfloor heating system. A balanced ventilation system with heat recovery has also been implemented.
Source Languages | French