RE2020 Thermal Study
Bayonne, New Aquitaine

In Bayonne, in a mild, damp coastal oceanic climate, the RE2020 is decided on envelope performance, moisture control and a growing summer comfort on exposed façades. In a market under strong land pressure, dynamic thermal simulation optimises thermal inertia, solar shading and ventilation to avoid systematic air conditioning. The carbon component (Ic construction, Ic énergie) steers the choice of materials, including bio-based ones. We produce the RE2020 calculation, the STD, the ACV and the Bbio and completion certificates for Bayonne and Basque Country operations.

Summer comfort is the sticking point of the RE2020 in Bayonne: on exposed façades, the degree-hours (DH) threshold is quickly exceeded, all the more so in the south of France. Dynamic thermal simulation arbitrates between thermal inertia, solar shading and natural ventilation before the building envelope is fixed.