The old vault, criticized by authors such as Toker, was replaced by the highly modern element of the project: a vault of triangular wooden panels including two skylights to illuminate the altarpiece and choir. The longitudinally self-supporting vault, with a span of 26 meters, rests on the existing dividing wall and on a new structure. It lighten the whole, and thanks to the skylights, suggests an opening towards the sky. This soothing space, giving a sense of luminosity and liberty, is defined by the unity of materials and the harmony of the whole. The vivacity of the colors dominated by orange tones revive the flamboyance of the chapel. Few buildings in Montreal can boast of such a successful alliance between historicity and modernity. This achievement was hailed as an intelligent and sensitive restoration.