A quick, honest summary of how uPVC and aluminium windows compare.
Aluminium window frames are strong and slim, which lets them carry large panes with thin sightlines. But aluminium conducts heat readily, so an aluminium frame transmits more heat than uPVC unless it has a thermal break.
uPVC frames are multi-chambered — the hollow chambers trap air, which slows heat transfer. That makes uPVC naturally insulating without needing a thermal break.
The short version: uPVC wins on insulation and maintenance; aluminium wins on slim sightlines and raw strength. For most homes in this climate, uPVC's advantages matter more day to day — which is why we build in it.
uPVC insulates naturally, needs no maintenance, and can't corrode. Aluminium is stronger with slimmer sightlines but needs a thermal break to insulate. For most homes here, uPVC's advantages matter more.
Depends on the opening — uPVC for insulation and low upkeep, aluminium where very slim sightlines on a big span matter most.
We build in uPVC. We'll tell you honestly where aluminium suits better.
Related guides covering this topic from other angles — different products, applications, or contexts.
Tell us your openings and we'll measure on site, advise, and give you a real quote — factory-direct from our Pannimadai works in Coimbatore.