Infrastructure
Concrete Stack Rehabilitation at Commissioners Street Transfer Station

Client
City of Toronto
Location
400 Commissioners Street, Toronto
Overview
The Commissioners Street Transfer Station Concrete Stack Rehabilitation project restored the structural integrity and appearance of one of Toronto’s most recognizable industrial landmarks. The work included comprehensive interior and exterior concrete rehabilitation and the installation of a new aviation lighting system to replace aging infrastructure. Due to the stack’s significant height, exposure to severe weather conditions near Lake Ontario, and heritage significance, the project required specialized restoration techniques to ensure its long-term durability and continued safe operation.
Our Approach
Our team developed a flexible, engineering-driven construction strategy tailored to the unique challenges of working on a tall, exposed heritage structure. As site conditions evolved, we continuously adapted our access methods, sequencing, and repair techniques while maintaining the highest safety standards. Year-round construction required careful selection of materials and procedures capable of performing in extreme temperatures, ensuring consistent quality, protecting the heritage asset, and extending the service life of this iconic concrete stack.







