Louis-Joseph-Papineau House

Built in the 18th century and transformed in the Neoclassical style in 1831, the house is an important witness to the heritage of Old Montréal. The restoration addresses its entire envelope: massive rubble and cut-stone masonry, foundations, chimneys, timber framing, traditional windows and doors, and metal roofing are restored or reinforced. Its distinctive wood cladding, designed to imitate cut stone, is dismantled to allow work on the concealed masonry behind it. Inside, decontamination also requires meticulous documentation, mould-taking, and careful storage of mouldings and decorative elements to be reproduced. At the same time, the interventions improve the building’s watertightness, insulation, and ventilation to enhance its long-term durability without altering its character.

The construction process thus becomes an exercise in reading and understanding the building itself. Point-cloud surveys carried out before and after selective demolition precisely document the house’s geometry and reveal deformations and conditions that had previously remained hidden. Each discovery informs adjustments to the interventions based on actual site conditions, in an approach where conservation and knowledge of the building advance together. Carried out in a dense urban setting, on a site of significant archaeological value and accessible only through a narrow carriageway, the work requires an especially measured approach. The restoration strengthens the different layers of this architecture, ensuring their transmission while preparing the building for its future rehabilitation.