Are uPVC windows cheaper than aluminium? Here's an honest answer rather than a sales one.
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 honest answer: sometimes, but not automatically. A high-spec uPVC window can cost more than a basic aluminium one. What's more reliably true is that uPVC insulates without a thermal break and needs no maintenance — which shows up over years, not on day one.
Sometimes, but not automatically — a high-spec uPVC window can cost more than basic aluminium. What's reliably true is uPVC insulates without a thermal break and needs no maintenance.
No painting, no corrosion treatment, no re-coating — the maintenance cost of aluminium and timber doesn't apply.
No — pick on what the opening needs. We'd rather spec it right than win on a headline number.
Related guides covering this topic from other angles — different products, applications, or contexts.
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