What Goes Into Acoustic Glass Design


Last Updated on April 23, 2024 by Saira Farman

Because it is a hard and inelastic substance, glass is not a good conductor of sound because of its properties. In point of fact, it does a decent job at reflecting noise. The issue is that the glass that is found on the inside of your windows is often rather thin, which means that it is unable to put up much of a fight. If it is untreated (or if it is a single pane), it will not do much to really prevent noise from entering your house. This is especially true if it is a single pane.

If you are experiencing the impacts of noise pollution, it is not suggested that you install regular single or double glazing because of this reason.

How Soundproof Glazing Works

The sound wave is deflected and dissipated as the glazing performs its function as soundproofing. This is accomplished through the acoustic glass noise reduction in that:

  • Changing the amount of thickness that the glass has.
  • Putting up layers of insulation in between the panes.
  • Increasing the distance between each pane of glass.

What Are The Requirements For Installing Acoustic Glass In My Windows?

It is essential to highlight that the best results can be obtained by putting acoustic glass inside specialised acoustic windows. This is the case since this approach yields optimal results. The vast majority of conventional uPVC or wood frames won’t be able to handle thicker acoustic glazing, and if the frames themselves aren’t treated, putting acoustic glass won’t do much good anyhow. The utilisation of a mixture of two or more of these variables is what noise reduction glazing does to stop noise from entering or leaving the building.


To put it another way, the thickness of the glass determines how effective it is in absorbing sound. Glass, on the other hand, has a naturally occurring coincidence frequency. Any thickness of glass will have a point in the audible spectrum when it begins to amplify the sound rather than attenuate it. Because of this, it is advised that acoustic windows include either double or triple panes of glass. These windows have many panes of glass of varying thicknesses so that they can combat the coincidence frequency.


The sheets of glass are adhered to one another using a coating of polyvinyl butyral resin (PVB) that is either very thin (0.38 mm) or two layers thick (0.78 mm). PVB was first used for safety and security purposes; nevertheless, due to its ability to attenuate sound waves, it also delivers great acoustic performance. In contrast to other acoustic resins, PVB accomplishes this goal without lowering the amount of light that may pass through the window or negatively affecting its overall performance.


By widening the spacing between the soundproof glazing panes, the acoustic performance of the soundproof glazing may be substantially increased. On the other hand, space is often at a premium in most houses, and the majority of homeowners would rather keep as much chill space as they can. Even though it is a costly option, the level of noise reduction that can be achieved by filling the space with heavy, inert gases like argon and krypton may be enhanced.

Noise Reduction Values

Acoustic glazing systems such as CUIN glass Acoustic can reduce the amount of outside noise by up to 54 decibels in their triple glazing units and by up to 52 decibels in their double glazed units. Other acoustic glazing systems will begin at around 36 dB on the lower end of the range When compared to a normal acoustic glass double glazed unit, which consists of two panes of glass that are 4 mm thick and an air cavity, this will result in a reduction in noise that is around 25 decibels.

What Is The Thickness Of The Acoustic Glass?

The typical thickness range for acoustic glass used in residential windows is between 6.4 and 12.8 millimetres. It is possible to purchase acoustic glass with a thickness of up to 20.8 millimetres; however, at this level of thickness, the glass becomes very heavy, which makes it challenging to support conventional window designs. The use of glass with a greater thickness is possible in a variety of business settings, including internal walls, sound studios, and conference rooms. A weighted sound reduction index of 42 decibels is achieved by glazing with a thickness of 20.8 millimetres.

Does Triple Glazing Minimise Noise?

Both yes and no.  Triple glazing may attenuate noise more effectively than regular double glazing does because it adds an additional barrier between the noise and the inside of the building. On the other hand, since typical triple glazing is not meant to reduce noise, installing it might potentially make the situation much worse. You must understand that the presence of two air gaps may produce resonance and echo chambers. It is possible that doing so could make the first noise complaint much more severe or will bring up additional noise problems in your home.

Want to know about acoustic glass price? Get in touch with window experts today. 

What is the main difference between laminated glass and acoustic glass?

Laminates are used in the production of all acoustic glass, however not all laminated glass is acoustic. The glass that has been covered in anything like resin or plastic to create laminated glass is simply referred to as laminated glass. Either to make the glass more impact resistant so that it won’t shatter when it’s struck or to increase the acoustic qualities of the glass.

When it comes to acoustic glass, the glazing is often laminated with polyvinyl butyral as a standard practice (or PVB). This is a kind of glue that is used to absorb sound and ensure that the glazing is held together securely without impairing the glass’s ability to transmit light.

Wrapping Up

If you want to chat to us about our soundproof windows, or just about noise reduction and double glazing, CUIN is here to assist you in finding the ideal product for you. Get in touch with windows and conservatory experts to know more.