RE: Aluminium windows vs UPVC windows: Which is best?
aluhm > 12-20-2021, 06:11 AM
Thermal efficiency
Obviously, UPVC is a great insulator and these windows (above) offer a very high level of thermal efficiency.
With aluminium windows, there’s a common misconception that they are not as well insulated as UPVC, but this is not true. The frames may feel colder to touch, but the window panes can achieve exactly the same energy efficiency levels.
This is done by using a thermal break, a barrier which prevents aluminium-to-aluminium contact from the inside to the outside of your window, to keep the inside of your home warmer for longer.
In short, both UPVC and aluminium offer excellent levels of insulation.