Noise Pollution - The most effective and cost efficient way to sound proof your windows is to fit secondary glazing. Ordinary 4mm thick glass significantly reduces noise, for better results we recommend 6.4mm Laminated or 6.8mm Acoustic ‘Stadip’ glass.
... Acoustic Glass can reduce external noise by as much as 75 - 80%. Thicker and heavier than 4mm glass, it also improves thermal performance. Upgrade to a 90% reduction when using our double glazed Heavy Duty secondary glazing...
...Did you know that over 30% of secondary glazing is installed in windows where double glazed windows are already installed and many of them in new build properties? In inner city areas and on main roads double glazing may not be sufficient enough. For extreme circumstances, we have a Heavy Duty system that can take double glazed sealed units. Read more...
The reason secondary glazing is so effective is that like all good sound proofing (i.e. in a recording studio) the best results are achieved where there is an adequate air gap or cavity between the two points of contact (i.e. cavity between the primary window and the secondary glazing). You can also use acoustic tiles in the air gap if you wish to achieve maximum sound insulation.
We also recommend that you use a different thickness of glass in your secondary glazing than is in your existing windows, this is due to the fact that a different thickness's of glass resonate at different frequencies. See the guidance tab for more information.
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