The extension and renovation of the St-Grégoire school consisted in adding a gymnasium, a library, a staff room, a multi-purpose room, offices, 7 classrooms as well as the redevelopment of the schoolyard. This project included the installation of a 3-storey steel structure. The exterior cladding materials used were brick, metal panels and curtain walls. Work was required to add a new water supply to the new part of the building. The existing building’s electrical power supply was moved to the extension section. In the existing part of the school, the corridors and washrooms on the upper floors were renovated with a change of finishes. Further, a new emergency exit was added to the existing part.