Door Installation Day: What to Expect (Quebec Homeowner's Guide)
A Quebec homeowner's guide to door installation day: prep, step-by-step entry and patio door install, cold-climate air-sealing, timing, cleanup and warranty.
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Built for comfort & savings. Made in Quebec
Energy-efficient windows and doors
Manufacturer of environmentally friendly doors and windows
What we offer
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.
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Each system can be customized to match your architectural style and performance needs.
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Engineered for strength and insulation, each door is designed to withstand Quebec’s demanding climate without compromising comfort or elegance.
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Learn more about what determines the quality of windows.
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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.
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Since 2011, Unisson has been more than a window manufacturer — we are a trusted partner in building better, more efficient homes.
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Our experts are ready to help you choose the ideal solution.
514-333-9777
unissogroupe@gmail.com
358 Rue Mcarthur, Saint-Laurent, QC H4T 1X8
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Triple-pane glass
Optional double-pane (1 1/4") or triple-pane (1 3/8") glass.
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Low-E coating and Argon gas
Energy Star® performance with Low-E coating and Argon gas.
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Double neoprene bulb seals
Double neoprene bulb seals for superior airtightness.
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Roto & Truth hardware
Multi-point locking hardware by Roto & Truth.
At Unisson, we don't believe in ordinary.
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
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