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Economical floor system with fast installation
Long‑span capability with on‑site adjustability
Designed to minimize floor vibration and help create quieter living spaces
High‑performance Wood I‑joists for Modern Builds in Cornwall and Surrounding Area
At St. Lawrence Structures St‑Laurent Inc., we supply high‑quality wood I‑joists designed to deliver strength, efficiency, and dependable floor performance for residential, commercial, and agricultural construction. As a closed‑type joist system, wood I‑joists are known for being quick to install, cost‑effective, and reliable, making them one of the most economical choices for builders and homeowners across Cornwall, Ottawa, Rockland, Hawkesbury, Limoges, and surrounding areas.
Our I‑joists can span over multiple supports, giving designers and contractors increased flexibility when planning long, open floor layouts. They are stocked in lengths up to 48 feet, making them suitable for large home designs, multiplex units, barns, and various light commercial applications.
For convenience on the job site, wood I‑joists offer excellent on‑site adjustability. They can be cut to length as needed, and their pre‑drilled knockout holes allow plumbers and electricians to run small services through the joist quickly and safely, without drilling.
Benefits of Wood I‑joists
Fast & cost‑effective installation
Closed‑type design makes I‑joists quick to install and often the most economical choice.
Long‑span capability
Can span across multiple supports, giving greater flexibility in floor design.
Stocked Up to 48’
Suitable for large homes, multiplexes, and agricultural buildings.
On‑site adjustability
Can be cut to exact lengths for efficient framing.
Pre‑drilled knockout holes
Small services can be run through the joist without drilling.
Wide nailing surface
Built with 2x3 or 2x4 flanges for strong, stable subfloor attachment.
Multiple Standard Depths
Available in 9 ½,” 11 7/8,” 14,” and 16” with additional depths available by special order.
Product Specifications
Download the official BOISE Cascade® I‑joist spec sheet:
Wood AJS I-joist
