1970 built residential uilding in the dense centre of Colombes, a western suburb of Paris.
The retrofitting process started in 2013, and the project consists of three buildings using the same construction methods (A: 2529 m2, B: 1523 m2, C: 1768 m2). All three buildings were retroffitted together. The buildings were using approximately 250 kWh/m2 of oil heating.
The main retrofit steps were finished in 2020 after a 2-year delay. Some finishing touches are still being undertaken in 2022.
Global prefabricated retrofit. The facade uses the "Panobloc" pre-fab facade system.
|TFA||existing treated floor area (usable floor space)||
|Space heating||Heating demand||
|Space cooling||Cooling & dehum. demand||
|Frequency of overheating (> 25 °C)||
|Frequency of excessively high humidity (> 12 g/kg)||
|Airtightness||Pressurization test result n50||
|Non-renewable Primary Energy (PE)||PE demand||
|Generation of renewable energy (in relation to projected building footprint area)||
Urban settlement | housing colony
5 820 m2