The VS-A group is a collection of design offices that deal with the design and engineering of building envelopes. Our main job is to design expressive, functional and economical façades and coverings that meet the expectations of the client and the architect. This aim leads us to produce tender documents for companies to fully understand these expectations and respect them as much as possible at the best possible price. We then undertake QA checks on the company's work. Over time, our aims have spread to cover the additional fields of heat, energy, structure, legal expertise, client assistance, teaching and even developing in certain cases. We participate in projects involving: •… new constructions, restorations or renovations, •… large and small buildings, •... national and international players, •... the public or private market, •... all kinds of schedules. From the beginning of a project, we try to write a unique story, making our architectural and technical reflections inseparable. This is how we develop personalised solutions with a strong character that fit into the overall architectural project.