About us

Building the horizon together

Groupe Lessard is a Quebec-based leader in the design, manufacturing and installation of high-performance building envelope systems for the commercial, multi-residential, institutional and industrial sectors.

Aluminum windows, window walls, conventional curtain walls, unitized curtain walls, operable windows, aluminum doors, storefronts, skylights, sunshades and other accessories.

Groupe Lessard has been innovating in the field of high-performance aluminum and glass architectural systems since it was founded. We offer products that provide greater ease of installation and have established a flexible delivery system based on project schedules.

Our priority: delivering innovative and high-quality products on time.

Business foresight and product ingenuity, combined with the talent of more than 400 Groupe Lessard team members, make it possible to carry out the most daring projects!

Our success is driven by our employees, suppliers and partners.


Residential - High Rise

Residential - Mid Rise



Flexibility, durability, reliability... for life

Groupe Lessard stands out because it has designed a complete range of European-type window systems with a sophisticated rain screen principle; French doors for terraces with simplified mechanisms and unequalled sturdiness; unique tilt-and-slide doors; and intelligent curtain wall systems with high energy and acoustic performance. All these technological innovations make Groupe Lessard a forerunner in its industry.

All Groupe Lessard products are designed and manufactured at our Laval site and meet the high-performance requirements of buildings.

The meticulous selection of raw materials, the robust assembly and the most rigorous quality control in the industry guarantee that all Groupe Lessard products are of high quality.

Aesthetic and avant-garde

Our products’ aesthetics and refinement give buildings harmonious characteristics, as well as clean and cutting-edge lines.

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