The intervention involved the renovation of the penthouse and the energy retrofit of the entire building. A wood structure was added to the existence envelope, it forms a big covered balcony for the first floor and a nice pergola for the ground floor. The large ground floor windows crate a continuity between the living room and the courtyard.
The new wooden volume contains the entrance staircase to the penthouse, it protects them from bad weather.
The intervention lasted 7 months, from May to December 2013. It has reached CasaClima B target with 43 kWh/m² year of energy demand. To obtain this results, it has been done many different interventions: the existence mineral wool insulation was improved with another wood fiber layer; new high performance windows has been installed instead of the previous.
A new heating system based on floor radiant panels was placed, it is helped by a mechanical ventilation system. To provide the DHW was installed a solar thermal system on the roof.
The roof was covered by aluminium shingles, the roof’s shape looks like a traditional one but it hides a panoramic terrace facing the valley.