Montreal, Quebec, Canada
Architecture, Building Envelope Assessment and Recommendations for Mitigation
Careful analysis of the failing aluminum and glass wall system led to an understanding of its weaknesses and to detailed corrective strategies.
Decorative horizontal aluminum extrusions accumulated snow, which froze and thawed, stressing the window frames by adding excess weight. In addition, differential movement between the building’s concrete floor plates and its wall system created openings that let moisture enter, further weakening the attachments.
The analysis recommended complete removal of the horizontal extrusions and their attachments and re-securing the wall system with higher-quality joint protection at the frame intersections. The analysis led to recommendations that were accepted by the federal government.