Built for comfort & savings. Made in Quebec

Premium-quality windows and doors

Energy-efficient windows and doors

Manufacturer of environmentally friendly doors and windows

Modern home exterior with premium windows and doors
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Triple-pane glass
Low-E coatings
High-efficiency sealing

Choosing Unisson means more than replacing windows.

Your home is a reflection of your standards — and it deserves windows and doors that elevate not only its appearance, but its performance, comfort, and long-term value.

That’s why we deliver fully customized, high-performance solutions crafted to meet the realities of Montreal living. No mass production. No compromises. Every installation is tailored with precision to complement your home’s architecture while standing up to Quebec’s demanding climate.

  • Enhance thermal comfort year-round
  • Reduce energy costs without sacrificing aesthetics
  • Minimize maintenance while maximizing durability
  • Perform flawlessly through harsh Montreal winters
01
Triple-pane glass
Optional double-pane (1 1/4") or triple-pane (1 3/8") glass.
02
Low-E coating and Argon gas
Energy Star® performance with Low-E coating and Argon gas.
03
Double neoprene bulb seals
Double neoprene bulb seals for superior airtightness.
04
Roto & Truth hardware
Multi-point locking hardware by Roto & Truth.

Our solutions

From the very beginning, our mission has been clear — to combine precision craftsmanship, refined design, and long-term energy efficiency into solutions that truly enhance the way people live.

01
Windows
Windows

Each system can be customized to match your architectural style and performance needs.

02
Modern exterior front door
Doors

Engineered for strength and insulation, each door is designed to withstand Quebec’s demanding climate without compromising comfort or elegance.

03
Design resources and planning materials
FAQ

Learn more about what determines the quality of windows.

04
Project gallery and completed homes
Galerie

Explore our gallery of window and door projects completed across Quebec. Find inspiration for your next project and see the craftsmanship behind every Unisson installation.

05
Unisson team and client consultation
About us

Since 2011, Unisson has been more than a window manufacturer — we are a trusted partner in building better, more efficient homes.

Let's talk
Contact us

Our experts are ready to help you choose the ideal solution.

514-333-9777
info@unissongroupe.ca
358 Rue Mcarthur, Saint-Laurent, QC H4T 1X8
Get in Touch

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Expert ideas, renovation guidance and premium home inspiration

Discover practical advice on windows, doors, efficiency, design and long-term home value. This section can work as a premium editorial hub that builds trust before a client even reaches out.

Featured article
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Design 6 min read March 2026

How to choose windows and doors that elevate comfort, curb appeal and resale value

A well-planned upgrade changes more than appearance. Learn what to compare, which details matter most and how premium products improve insulation, daily comfort and the overall feel of your home.

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A short planning checklist that helps homeowners make faster decisions and avoid delays during consultation.

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Panoramic glazing ideas that make interiors feel brighter and larger

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A quick overview of what really affects look, maintenance and how premium finishes hold up over time.

Choosing Replacement Windows

There are a lot of factors to weigh when it comes time to choose replacement windows for your home.

Condensation FAQ Low Emissivity Glass Triple Glazed Windows
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