Frequently Asked Questions on Double Glazing

What is the advantage of using aluminium in uPVC windows?

Using aluminium in uPVC windows gives you the following advantages:

• Virtually no maintenance over its long lifetime
• Slim, strong sections that will not warp or twist
• About one third the expansion of PVCu

Its main disadvantage is that it is a relatively poor insulator. However, thermal break aluminium frames are available, which offer better insulation.