Which is quieter, uPVC or aluminium? Here's an honest answer.
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.
Honestly, the frame material matters less here than people expect — the glass and the sealing do most of the work. A well-sealed aluminium window with laminated glass will beat a leaky uPVC one every time.
The frame matters less than the glass and sealing — laminated glass and tight multi-point sealing do most of the work. uPVC's chambers help slightly, but a well-sealed aluminium window with laminated glass beats a leaky uPVC one.
Laminated glass first, tight sealing second, then the frame. Get those right and the material matters little.
Yes, it adds to it — but laminated glass does more for sound specifically.
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