UPVC and aluminum windows look different but behave very differently in Quebec winters. Here is how the two materials compare on cost, energy, and longevity.
Thermal Performance
UPVC is a thermal insulator — aluminum is a conductor. In Quebec, this means uninsulated aluminum frames feel cold to the touch in winter and lose more heat per square meter.
What About Thermal Break Aluminum?
Thermal-break aluminum windows include a polymer barrier between inner and outer frames — closing some of the gap but still not matching UPVC for residential cold-climate use.
Cost in 2026
- UPVC — lower upfront cost, no painting needed
- Aluminum — higher initial cost, slim profiles for large glass
- Thermal-break aluminum — 30–50% more than equivalent UPVC
- Maintenance cost — UPVC negligible, aluminum may need repainting
Best Choice for Quebec Homes
For residential homes, UPVC is the better all-around choice. Aluminum still wins in commercial applications and very large architectural glass.
Frequently Asked Questions
Does aluminum sweat more than UPVC in winter?
Yes — thermal-break aluminum reduces this but cannot eliminate it entirely.
Are aluminum windows recyclable?
Yes — both materials are recyclable but UPVC also has a long life and lower carbon footprint per year.
Which lasts longer?
Both can last 30+ years when properly maintained, but UPVC requires less ongoing care.