Engineered Roof Trusses for Residential, Commercial & Agricultural Construction in Cornwall and Surrounding Area

At St. Lawrence Structures St‑Laurent Inc., we fabricate custom roof trusses engineered to match your exact building plans. Whether you’re constructing a single‑family home, multiplex, barn, or light commercial building, our trusses are designed for strength, consistency, and long‑term performance.

Using the MiTek Sapphire Suite, our engineering team creates detailed layouts, load calculations, and structural designs based on your architectural drawings. This ensures that every truss meets the necessary building codes for Ontario and Quebec, while also aligning with your project’s specific span, pitch, loading, and installation requirements.

Our manufacturing plant is OSWA (Ontario Structural Wood Association) Quality Control certified, ensuring reliable fabrication standards and rigorous quality checks throughout production. Whether your project requires simple gable trusses or complex systems such as attic trusses, hip sets, or vaulted configurations, our team ensures precision at every step.

We support builders and homeowners across Cornwall, Ottawa, Rockland, Hawkesbury, Limoges, and surrounding areas, with delivery methods that allow trusses to be placed neatly and safely on your site.

Once your plans are submitted, our team prepares a complete engineered layout package to help keep your project on schedule from the very first phase.