The Colombes Multimedia Library is a monolithic project consisting of two materials: glass and aluminium. Its shape is inspired by an aluminium prism that emphasises the glazed parts in comparison with the opaque parts. On this project, VS-A is in charge of the whole building envelope. This envelope covers all facets of the project. Our research has focused on the creation of a solution with a unique aesthetic for the entire project, as it is made up of aluminium and glass: aluminium on the roof, façades and soffits and glass for the parts that look out onto the town. Our expertise has contributed to the design and production of a façade system whose ornamental features have been defined by the architect..