If you’re wanting new double-glazing for your home and the installer quoting you asks you which one of the eight main types of glass you want for your windows, how would you answer?

Before you start getting quotes, it always pays to know as much as you can. Make a decision about how many of your windows you want replacing. Then make your mind up about the type of frame you want. And then, it’s about the glass that goes in your double-glazing window panes.

In this article, we’re going to look at noise control glass (sometimes called acoustically insulating glass), what makes it special, and how much it costs so you can choose whether it’s right for you.


Introduction to noise control glass

We’ve all experienced at one point of our lives what it’s like to have a noisy neighbour. Having to listen to sounds you don’t like and didn’t choose can really affect how much you enjoy where you live. It can stop you sleeping, it can cause your stress, and it can really affect your concentration when you need to do something difficult or academic.

The same is true for people who live under flight paths, next to very busy roads or motorways, near shopping zones, and so on.

To help people in these situation, double-glazing manufacturers have developed noise control glass.


How does noise control glass work?

A special purpose-designed interlayer contained in your double-glazing works like a dampening core which cuts back on sound frequencies passing through the second pane of glass. The interlayer absorbs then sound and then weakens it. That’s how it stops noise coming though.

Noise control glass reduces the amount of noise you can hear by up to 75%.


How much does noise control glass cost?

Noise control glass costs about 25% more than standard, annealed glass.


How breakable is noise control glass?

Noise control glass, just like laminated glass, can withstand up to 24,000 pounds per square inch of pressure, just like toughened glass. That’s like the weight of 22 full-sized Aberdeen Angus bulls that you might see charging through the Scottish Highlands all standing on one square inch of your window!

Noise control glass is incredibly sturdy and tough. If it does break though, there’s a plastic interlayer on the pane which holds all the glass in place. It also means there’s no hole in your window so no chance of a burglar climbing into your home.


When you’re getting quotes, what should you ask an installer about noise control glass?

The first big question you need to ask is – “do I really need it?”

All types of double-glazing dampen noise. That’s because there are two well-built panes of glass and an argon-filled vacuum between the panes. Do you know a neighbour who has recently-installed double glazing? Why not ask them their opinion on whether their new windows have reduced the noise coming into their home and increased the quality of their lives?

Second, do you need noise control glass all over your home? If you can hear a lot of noise from outside through your front windows, you may well need noise control glass. What if you go around the back though? Is the noise as disturbing and loud? If not, you may not need to spend a premium on noise control glass for the back, getting standard windows installed instead.