ÉCRIN proposes the construction of a residential building with 14 flats on 6 levels, in the Porte des Lilas district of Paris.

Concerned about environmental impact, CALQ has chosen to build the structure in wood (except for the core which is in concrete). This choice is motivated in particular by the urban context of the project.

Thus, the facade walls are made of Wooden frame wall and the floors are made of O'portune® slabs, an innovative wooden construction process developed by CBS-Lifteam, which allows high mechanical performances up to 11 m without intermediate supports.

The use of wood has many advantages:

- The speed, simplicity and cleanliness of the construction (reduction of the nuisances of building site - noise, dust),
- Respect for the environment thanks to a reduced carbon footprint compared to concrete and the use of a recyclable material,
- Improved comfort and well-being for the occupants thanks to the low inertia of wood, which allows rapid heating, and to the regulation of ambient hygrometry thanks to the breathable nature of the material.

The facades are composed of brick facing, with a play of relief and moucharabieh on the ground floor. A zinc attic extends over the last two levels, recalling the aesthetics of Parisian roofs.

The dwellings have large bay windows for optimal natural lighting. The mixed wood/aluminium windows are fitted with frames allowing the integration of sliding folding shutters.

The plot is located in an area where the vegetation is enhanced (+10%). The ground floor flats have private gardens. The project provides for the planting of shrubs, climbing plants as well as perennials and grasses in the open space. These plantings create a "plant filter" with the neighbouring plots.

On the ground floor, an entrance hall, a bicycle room and the technical rooms are integrated.

The whole allows for a smooth integration of the ÉCRIN building into its environment.