Large glazed sliding door onto the garden

Soundproof windows: how to reduce outside noise

To reduce noise, the glazing matters most: panes of different thicknesses or acoustic laminated glass stop sound far better than standard triple glazing. Next come airtight seals, the quality of the installation and the roller shutter box. The frame material, uPVC or aluminium, matters much less.

By Marcio Barros · Updated 31 October 2026 · 5 min read

Where noise gets in

The glazing, the largest surface.
The seals, if they are worn or badly fitted.
The joint between the window and the wall, if the installation is not airtight.
The roller shutter box, often forgotten.

Acoustic glazing

Sound passes more easily through two identical panes. Acoustic glazing uses panes of different thicknesses or laminated glass with an interlayer that dampens vibration. It is the most effective solution near a busy road, a railway line or under a flight path.

Installation and seals

An acoustic window that is badly fitted loses much of its benefit. An airtight installation with new seals matters as much as the glazing.

uPVC or aluminium for noise?

Both work. The choice of glazing and the quality of the installation matter far more. See our guide uPVC vs aluminium windows and our triple glazing page.

ExploreuPVC and PVC windows in Luxembourg

FAQ

Is triple glazing better than double glazing for noise?

Not necessarily. Well designed acoustic double glazing can do better than standard triple glazing. Near a source of noise, the ideal is triple glazing with an acoustic pane.