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, but now in 2023 the project is completely finished and the residents are in.
Global prefabricated retrofit set to reach the EnerPHit standard. The facade uses the "Panobloc" pre-fab facade system.
After the renovation measures, this social housing made of 3 buildings in total, saved approx. 700 tonnes CO² annually and used wood pellet heating.
|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||
|Primary Energy Renewable (PER)||PER demand||
|Generation of renewable energy (in relation to projected building footprint area)||
Urban settlement | housing colony
5 820 m2