Which suits Coimbatore's heat and monsoon better — uPVC or aluminium? Here's an honest local view.
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.
In our heat, an aluminium frame without a thermal break conducts warmth straight into the room — a real disadvantage here. uPVC's chambers do that insulating work for free, which is the main reason we build in it.
uPVC insulates against heat naturally through its chambers; plain aluminium conducts heat into the room. In our climate that's a real disadvantage unless the aluminium has a thermal break.
Aluminium conducts heat readily, so an untreated frame transmits more heat than uPVC. A thermal break addresses this.
Both, with good sealing — but uPVC won't corrode, which matters over years in humidity.
Related guides covering this topic from other angles — different products, applications, or contexts.
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