The project is the bioclimatic renovation of an energy-sieve in Corrençon-en-Vercors, France. The project aims to create a high-performance envelope using locally sourced bio-sourced materials and to radically transform the east, south and west facades in order to maximise natural light and thermal comfort in all seasons. As external insulation reduces the depth of the existing roof overhangs, a series of modular sunshades are central to the design of the spaces.
Because the Vercors region is home to one of the largest communal forests in France, an entire circular economy has emerged around the timber industry: from foresters to sawmills to carpenters and architects, all the way to an urban heating network fuelled by wood waste. This modest renovation of a chalet is part of a larger regional project aimed at fostering a new form of sustainability at all scales and in all forms: economic, cultural and, above all, environmental.
While the traditional vernacular architecture of the Vercors region is synonymous with stone buildings, in 2011 the entire plateau was reclassified as an area with moderate seismic risk. Since then, it has been illogical to justify new masonry structures. The basis of the project was therefore to utilise the other locally available resource: timber.
Specifically, the cladding, previously protected by large roof overhangs, remains 100% spruce: harvested, processed and installed on the Vercors plateau, but now made more resistant by a charring treatment. The structure and decking of the terrace are 100% larch. The right wood species, with the right details, in the right place. Masonry elements such as counter tops and the hearth are made from reclaimed stone.