Open Joists for Residential, Commercial & Agricultural Floor Systems in Cornwall and Surrounding Areas

At St. Lawrence Structures St‑Laurent Inc., we supply two types of floor joists, both fully compliant with the Ontario Building Code (OBC) and CCMC approved for structural performance, safety, and long‑term reliability. These joist systems have been used throughout the industry for many years and have a proven track record in residential, commercial, and agricultural construction. Their consistent performance makes them a trusted choice for builders who require dependable floor systems that install efficiently and meet today’s structural expectations.

One of the primary systems we distribute is the Open Joist TRIFORCE®, a high‑performance, lightweight open‑web joist known for its flexibility, installation efficiency, and durability. Its open‑concept design allows plumbing, electrical, HVAC, and other services to pass through easily, eliminating the need to drill or cut the joist. This makes installation cleaner, faster, and more efficient for contractors, builders, and homeowners.

We proudly serve Cornwall, Ottawa, Rockland, Hawkesbury, Limoges, and surrounding areas, supplying quality, reliable floor systems for new homes, multiplexes, additions, commercial spaces, and agricultural buildings.