The original attics were built with a wooden structure covered with sheet steel. The dormer windows were built in painted wood. For the repair work, it was decided to use Galvalume galvanized steel. The three-phase project, carried out in consultation with the City of Montreal and the Ministry of Culture, was the subject of grants for the preservation of heritage. The scope of the mandate included expertise, updating the facilities to current standards, preparation of plans and specifications, and site supervision in occupied hospital premises. Repairs to the solid masonry wall were also carried out in 2013 and 2014 and the successive restoration phases continued until 2017.