RenovX

The existing facades are removed and replaced with higher-performance facades. The architectural language of the original façades is preserved, which explains the choice of tall grid curtain walls with glazed or opaque infills expressed in various ways. The south facade is built with steel profiles to support large horizontal glass sunshades. Custom aluminum mullion systems are installed in the patios, in a configuration without intermediate transoms. The corners are also free of mullions: a design combining VEA and VEC technologies makes this minimalist appearance possible. The reuse of facing bricks and the conservation of existing cladding support structures are also considered as part of the project.

As part of the rehabilitation project of École Polytechnique, Elioth acted as a sustainable construction engineering firm to ensure the environmental monitoring of the project, which was structured around the BDF (Bâtiments Durables Franciliens) framework with a target Silver level. The support focused on defining, steering, and implementing an environmental strategy built around three main pillars. The first aimed at reducing energy consumption through the passive design of façades, enhanced roof insulation, and the optimization of technical systems.

The second focused on ensuring summer thermal comfort without resorting to air conditioning, through the deployment of passive solutions such as raw earth plaster, the installation of ceiling fans, and the implementation of natural night ventilation driven by thermal draft. Finally, an in-depth carbon footprint optimization effort was carried out in close collaboration with Elioth Façade and the Cycle Up platform, notably through achieving an ambitious reuse objective corresponding to 1% of the construction budget.