The same label does not mean the same performance
Two aluminium windows can both include a thermal break and still perform differently.
Thermal break and polyamide depth
A thermal break should not be treated only as a label. As a general rule, the greater the depth of the polyamide separating the outer and inner faces of the profile, the better thermal performance the window can achieve, provided the rest of the system supports it.
Glass and profile must work together
A high-performance glass needs a profile that can support its performance. Thermal insulation, solar control, acoustics and security depend on the whole combination.
Airtightness, water tightness and wind
It is also useful to consider how the window behaves against air, rain and wind, especially on exposed facades.
Installation matters too
Perimeter sealing, shutter box connections and finishing details affect real comfort.
You do not need to read technical sheets alone
Leave your details and a Ventanas Cortizo network store can guide your comparison.
FAQ
Is choosing a window with thermal break enough?
No. Polyamide depth, profile design, glass and installation also affect performance.
What does better thermal performance mean?
It means the full system helps reduce unwanted heat losses or gains.
Do I need to understand technical data sheets?
Not necessarily. You can request guidance.