INFINITE Case Study France - INFINITE Building Renovation

INFINITE Case Study: France

About this case

Located in the north of France and constructed in 1950, this twin home features two attached residences with a total heated floor area of approximately 84 square meters. With a combined overall façade area of 111 square meters (including windows and doors) and 88 square meters without, the building offers a compact yet versatile space for renovation experimentation. The two-storey building has a garden space in front and at the back, and the two residences have a common wall and a pitched roof. Bricks masonry perimeter walls surround the building. Situated within a neighbourhood of 207 dwellings undergoing an Energiesprong renovation program, this building is part of a larger initiative to enhance energy efficiency and sustainability in the community by 2025.

The challenge

The main challenge we face with this demo is to transform a traditional building into a modern, energy-efficient residence while maintaining its architectural integrity and complying with local regulations.

Installing any new technology on the existing building is technically not approved unless they have an ATEx – Technical Experimentation Assessment – on the solution. To increase the replicability of the solution it was decided to pursue an ATEx on the BIPV system.

Technology kit

Energy generation BIPV kit

RENOVATION CONCEPT

The all-industrialised BIPV kit will be installed on the façades. The possibility of installing PV for the roof has also been studied.

As part of the ongoing renovation work the building façade will receive exterior insulation, replacement of window and French door systems, and replacing the roofing (except the structure). The heat pumps and the electrical connections will also be upgraded and updated.

Demo Owner

Vilogia

Contact: Julien Holgard

Vilogia

Contact: Julien Holgard

Vilogia is an entrepreneurial group of social housing with a strong social, societal and environmental responsibility. We own and manage a stock of rented property including 85 000 dwellings spread in main high-demand areas in France. We house around 160 000 tenants. We are a big social housing company in France with an average of 2 000 new dwellings delivered and 1 500 retrofitted per year.

Vilogia is one of the most innovative companies in the French social housing sector. For more than ten years, Vilogia has had an innovation department of 15 people. This tonic team is involved in several European projects (H2020 or Interreg projects).

We actively participate in projects that focus on reducing the energy consumption of our building stock, helping our tenants in better management of their energy bills with the goal of reducing our ecological footprint. In 2020, Vilogia had delivered 217 passive housing units all over France ; 406 were delivered 2023. The company is also a pioneer in implementing Energiesprong projects (Net Zero retrofits with an off-site industrial process) in France.