Which needs less upkeep, uPVC or aluminium? Here's an honest comparison.
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.
Both are low-maintenance compared to timber. uPVC's edge is that there's genuinely nothing to maintain — no coating to fail, no corrosion to treat. An occasional wipe and clear tracks is the whole routine.
uPVC — there's genuinely nothing to maintain beyond an occasional wipe and clear tracks. Aluminium's coating can need attention over time, and it can corrode in coastal air.
Neither — that's a timber problem. Both are a big step up from wood on upkeep.
A wipe with mild soapy water, clear tracks and drainage, and occasional light lubrication of hardware. That's it.
Related guides covering this topic from other angles — different products, applications, or contexts.
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