St. Lawrence Structures Inc., for All of Your Construction Projects

Roof truss designs since 1989

Whether you are a construction contractor or an individual who is carrying out a new construction of a renovation, put your trust in a company that has acquired more than 20 years of experience in serving you.

At Structures Saint-Laurent, we specialize in the fabrication and design of roof trusses and wooden floor trusses. We also take care of the structural calculations for wooden or steel beams and columns in accordance with the client’s specifications.

From Montréal to Ottawa, including Cornwall

Our products are manufactured using sophisticated equipment and cutting-edge software applications. All of our calculations are guaranteed by a professional engineer who works for the company, which allows us to offer you a superior level of quality and precision. We are ideally located in Cornwall, Ontario, and we serve a clientele from Ottawa to Montréal within a radius of more than 200 km.

Are you looking to purchase roof trusses or wooden structures in order to build a floor? Contact us for your next project.


  • Commercial
  • Residential
  • Agricultural

Professional Associations


  • Roof trusses
  • Wooden floor beams and trusses

Service Areas

  • Eastern Ontario
  • Western Québec

Contact Us

1030 Virginia Drive

Cornwall, ON K6H 5R9 


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From floor to ceiling

We work with a variety of brand-name
products in order to provide
you with personalized service

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Your convenience is our priority

We serve within a radius
of 200 km between
Ottawa and Montréal

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