Performance-led windows · Montreal & Quebec

Windows

Unisson manufactures premium windows designed for modern construction, combining performance, insulation, durability, and architectural flexibility.

Windows
Lead-free UPVC construction
Energy Star ready systems

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Explore window types by how they ventilate, frame views, and fit the architecture of the home.

01
UPVC Windows

Unisson windows are manufactured using 100% lead-free UPVC, delivering superior durability, easy maintenance, and long-term resistance against cracking, blistering, warping, and discoloration.

02
Awning Windows

Awning windows are hinged at the top and open outward from the bottom, creating a clean architectural look while delivering practical ventilation and weather protection.

03
Casement Windows

Casement windows open outward on side hinges, offering unobstructed views, excellent ventilation, and one of the tightest seals available for strong year-round performance.

04
Double Slider Windows

Double Slider windows use two operable sashes that glide horizontally, delivering flexible ventilation, clean lines, and dependable day-to-day operation.

05
Double Hung Windows

Double Hung windows combine timeless proportions with modern performance, using two vertically operable sashes to create balanced ventilation and a refined appearance.

06
Single Slider Windows

Single Slider windows offer one operable sash paired with a fixed panel, balancing controlled ventilation, affordability, and a clean contemporary profile.

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

Unisson windows are crafted using high-quality materials and tested to meet CSA standards. Designed for Montreal's climate, our systems improve thermal comfort, reduce noise, and increase long-term energy efficiency.

Unisson windows are not just a functional upgrade — they are a long-term investment in your home's comfort, beauty, and value.

  • Fusion-welded 100% UPVC sash and frame
  • Guardian Glass with Super Spacer® warm-edge technology
  • Multi-point locking hardware by Roto & Truth
  • Energy Star® performance with Low-E coating and Argon gas
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01
Fusion-welded 100% lead-free UPVC
Sash and frame profiles are fusion-welded for structural integrity, with multi-chambered construction that resists cracking, warping, and discoloration — no painting or maintenance required.
Fenêtres Unisson Groupe
02
Guardian Glass with Super Spacer
Optional double-pane (1¼") or triple-pane (1⅜") glass by Guardian, paired with Super Spacer warm-edge technology for superior insulation and reduced condensation.
Fenêtres Unisson Groupe
03
Double neoprene bulb seals
Superior airtightness with double neoprene bulb seals and integrated weather stripping that blocks drafts, moisture, and noise throughout every season.
Fenêtres Unisson Groupe
04
Roto & Truth hardware, Energy Star certified
Multi-point locking hardware by Roto and Truth ensures smooth operation and security. All systems meet Energy Star standards with Low-E coating and Argon gas fill.