Sound Proofing

There are a number of ways to help reduce the noise coming through your windows. You might try to draught-proof the surrounds with one of the many products found at your local DIY store, or perhaps change the existing glass for double glazing. Maybe even quite simply hang heavy curtains in front of the windows and it’s true to say that all of these will help a little, but unfortunately, the best noise reduction you can expect to achieve using these methods is around 10%. So be careful not to spend out a sizeable amount of money only to be disappointed.

Did you know that over 30% of secondary glazing fitted by City Sound is installed in windows already double glazed and many of them in new builds where the sound proofing from the new double glazing is not sufficient enough to meet building regulations?

Why is secondary glazing so effective at noise reduction?

Like all good sound proofing (as in a recording studio, for example) the best results are achieved only where there is an adequate cavity between the two points of contact (i.e. cavity between the primary and secondary window). That's why at City Sound we always try to install our low-profile secondary glazing with a sufficient cavity from your existing window to ensure maximum insulation. Of course we always take into account the overall aesthetic effect of our work and materials on your existing decor. In layman’s terms: The bigger the cavity between your existing window and the new secondary windows, the better the level of sound proofing.

What kind of noise reduction can be expected from City Sound’s secondary glazing?

There are many different kinds of pollution you may experience – but let's take road traffic noise, for example. If we can achieve our desired cavity you can expect a reduction of around 70 –80% in noise reduction, and in some cases as high as 90%. In the worst case scenario where a cavity cannot be achieved or is not desired, a reduction of at least 50% is almost certain.

(Please note that the above guidelines are based on the installation of our own product, using our unique methods of work, and incorporating our specified glass.)