Soundproof Glass: Upgrade Your Soundproofing Game 2023

Soundproof glass is manufactured by joining two layers of glass with an interlayer of Polyvinyl Butyral or PVB in between the layers. This layer of PVB holds the glass sheets together. The PVB interlayer acts as a soundproof layer that provides incredible sound absorption properties.

These specialized PVB membranes, which are present at the core of the glass, can help prevent sound frequencies from vibrating from one glass pane to a different pane. We hear a lot of stories about soundproof glass but this one question always arises, does soundproof glass really work? 

Yes, it does work by reflecting the sound waves. A Soundproof double glazed glass can reduce noise by up to 50 per cent. Acoustic glass works by creating a barrier between the sound and your ears.

There are just two types of soundproof glass: the double-glazing type: which combines both soundproofing and insulating properties, and the laminated glass type: which combines soundproofing and security performance.

Is Glass a Good Sound Insulator?

A sound is a form of acoustic energy, mostly vibrations that travel in the form of waves through the air. To get better noise decline, the energy of these acoustic waves must be reduced first. Absolute soundproofing is something that allows no noise to enter an area whatsoever is mostly impossible in residential areas.

Glasses are a good conductor of sound, but an excellent soundproofing material too, or we can also say it has a sound insulation property. The major reasons for its sound insulation property are firstly its density, glass is highly dense, which means it has got a large mass even in a small thickness. Secondly, the reason is, it is non-porous, which means it does not have any holes from where sound or noise can leak. 

There are various steps to make a glass soundproof: First is, the soundproofing manufacturers add more mass to the glass, making it thicker. Because thicker material will allow less sound to pass through the glass. Thicker glass will let the energy dissipate on its surface, thus reducing sound. 

Image of Soundproof Glass

Is Thicker Glass More Soundproof?

As discussed above, thicker glass is more soundproof than other glasses. Any sheet of glass has some coincidence frequency. 

What is Coincidence frequency? 

Coincidence frequency is the frequency where the shape and size of glass amplify sound in place of reducing it. Due to this, you get to hear louder sounds instead of reduced sound.

The most common problem with the thickness of glass comes with lowering the frequency causing the glass panel to vibrate. With more thickness, the frequency of this vibration can slow down that it can be enough for humans to hear.

To prevent the phenomenon of coincidence frequency, many soundproof glass windows use different thicknesses for multiple layers. The combination of glass and the other variant has a difference of about 30% in thickness, which acts as a good decoupling interlayer.

How thick is Soundproof glass?

Soundproof glass is usually 1 inch to 2 inches thick but it also depends on the level of soundproofing you’re trying to achieve and the material of glass. You should consult a professional if you need a high level of insulation.

Benefits of Soundproofing Glass

  1. Noise Restriction

The most significant advantage of soundproof glass is that it can restrict outside noises from traffic, pedestrians, construction sites, music sound, events, etc., and provide complete sound insulation. 

Soundproof glass works by creating a barrier between the outside sound and your ear and stops the external noise by up to 90%. Hence, with soundproof glass, you can turn your home into a peaceful and protective place.

2. Enhanced Safety 

As soundproof laminated glass, it offers the most secure and safe environment. Laminated soundproof glass is more durable as compared to the other glass. We know soundproof glass is made of an inner PVB interlayer, which doesn’t break easily. 

If a situation occurs that this glass breaks, the pieces of glass remain intact to the PVB interlayer and don’t shatter all over, it gives a spider-web appearance to the glass. Since this type of glass does not shatter and scatter all over, it reduces the instances of getting hurt or injuries from the glass pieces.

3. High Security 

Laminated soundproof glasses are sturdier and stronger than ordinary ones. It can be created with different glass panes of multiple thicknesses, which makes it even stronger. This characteristic property of laminated glass provides enhanced security to your home. 

When soundproof glasses are installed in your windows and doors, it becomes extremely difficult for intruders, thieves, or burglars to get inside your home. This makes sure that your home is safe from theft or intruders, this property makes soundproof glass an excellent choice from a security point of view.

4. More Comfort

If you are looking forward to having an ideal temperature in your house, you can get that by going for the Low-E coating on your soundproof glass. By getting a Low-E coating, the soundproof glass will insulate your home internally with the interiors optimized. 

In the time of summer, these low-E coated soundproof glass windows will keep the house cool by reflecting the sun rays away. In winters, these soundproof glass windows will prevent heat from escaping the house through them, hence the soundproof glass helps you achieve comfortable interiors. 

Apart from this, the automatic cooling and heating systems of glass will reduce your energy and electricity bills. This is also a major benefit that makes the soundproof glass essential for your home.

5. UV-rays Protection

Soundproof glasses not only improve your health by reducing noise levels but also protects you and your residents from the harmful ultraviolet (UV) and infrared (IR) rays of the sun. Getting the laminated soundproof glass in windows and doors blocks all harmful UV rays which come directly from the sun and protects you from solar glare and major health conditions. 

Not only this, installing the laminated soundproof glass can even protect your home’s furniture, and other kinds of stuff like carpets, rugs, mattresses, and other housing furniture from the harmful effects of UV rays and IR rays. 

5. Thermal Insulation

Last but not the least, thermal insulation. Soundproof glass reduces the amount of heat transfer inside the room. So, if you live in a hot area then this glass will reduce the amount of heat coming inside the room through windows.

If you’re new to soundproofing glass please watch this video.

Best Soundproof Glass

If you have decided to make your place soundproof, the most important step to get the best soundproof results, you first have to select the right glass for soundproofing.

When it’s a matter of efficient soundproofing, double glazing is currently the best option. Acoustic double glazed glasses would be the best choice of glass for noise reduction over triple glazing. You can go for laminated glass soundproofing because we already discussed above there are some major features and benefits of laminated soundproof glass. 

You can even put a laminated glass pane into a triple glazed glass which will make it even better and more likely to perform better than the acoustic double glazing. But because of the heavyweight of triple glazed glass, they have a shorter lifetime so try to avoid them if possible.

Also Read: Soundproof Paint: Does it really work?

Type of GlassSTC Rating
Laminated Glass28 to 45
Bulletproof Glass28 to 32
Acoustic Glass38 to 55
Tinted Glass28 to 45
Insulated Glass UnitsVery low. Often used with other materials

Soundproof Glass Price

The price of the soundproofing glass varies according to the quality of the material and the size of the glass you need. There are different price ranges available in the market. You can get a soundproof glass window for around $300 – $500 while a fully soundproof sliding glass door would run you through $1000 – $1500 on average. 

The better the material used, the better will be the soundproofing. Soundproofing is not very cheap. But is it really expensive?

Is Acoustic Glass Better than Double Glazing?

There are several solutions to reduce noise within your household, the main areas being the sash windows, casements, or space between the doors hinges as these structures are of the thinnest space of sound. 

The big question however concerns the selection between the double glazing and acoustic glass – is there a difference overall? 

The short answer is yes, thanks to the above-mentioned layering technique. The main function of acoustic glass is to disrupt sound waves, whereas double glazing – a superb sonic barrier in itself – it’s also a great thermal insulator because of the air gap present between the pane. The important question is what proportion quiet you need!

It is worth taking a while now to figure out your expectations about what life is going to be like after the installation of acoustic glass. If your main motivating factor was to chop out the drone of heavy traffic outside, then the acoustic glass will work well and cut out a big proportion of the sound and life is going to be quieter. 

We cannot say which one is better as both of them have their own pros, acoustic glass is perfect for blocking noise while double glazing glass comes with some other benefits like thermal insulation. It totally depends on your requirements which one to choose.

However, double glazing glass is more expensive as compared to acoustic glass.

Soundproof Glass Door

Soundproof glass doors can cost anywhere between $1,300 to $4,000. The price of your door mostly depends on the size of the door. Also, quality is a major factor that comes while soundproofing. Just make sure that you pay attention to the STC and NRC ratings on your door before making the purchase.

a house with glass wall

The cost of a soundproof glass would fall in the range of $30-$50 per square feet. Important factors of getting the cost are the materials, size of the walls, and soundproofing surface.

Soundproof Glass Window Price

A soundproof glass for measurement of 3-feet-by-5-feet window can cost you around $500 – $1000, including the installation charge, and pricing varies according to the features. Customized soundproofing windows can cost somewhere to $10,000 per window and it is excluded from the price of installation. 

Soundproof Glass Wall Price

For a 96 square feet wall the cost for a soundproof glass wall would be $2880 to $4800.

Windows$500-$1000 (3 feet x 3 feet window)
Wall$2880 to $4800 (96 square feet wall)

Soundproof Glass Alternatives

There are several cost-effective alternatives to soundproof glass that can be used to reduce noise levels in a space:

  • Soundproofing curtains or blinds: These can be hung over windows or on walls to absorb sound and reduce noise levels.
  • Soundproofing materials: These can be used to insulate walls, floors, and ceilings to reduce noise levels. Options include foam panels, insulation, and acoustic tiles.
  • Soundproofing sealants: These can be used to seal gaps and cracks around windows, doors, and other openings to reduce noise levels.
  • Soundproofing door sweeps: These can be installed at the bottom of doors to block out sound.
  • Soundproofing rugs and carpets: These can be used to absorb sound and reduce noise levels in a space.
  • White noise machines: These can be used to generate background noise, which can help to mask other sounds and reduce noise levels in a space.

Keep in mind that the effectiveness of these alternatives can vary depending on the specific noise levels and the size and layout of the space. It may be necessary to use a combination of these methods to effectively reduce noise levels in a particular environment.


In the concluding lines of my article, I hope it is clear that soundproof glasses do work and it is essential if you want to have a quiet and calm workspace or home. There are many benefits of soundproofing on the most important and obvious being noise reduction. 

Soundproof glasses are worth it and it helps us to get a soundproof environment. Soundproof glass stands necessary if you choose a silent, calm, and peaceful surrounding. You should give it a try to enjoy staying in a noise-free zone. 

However, choosing the right type of soundproofing glass is a question to ask before you get one.

Let me know in the comments, what are your thoughts on soundproofing glass?


Are Glass Doors Soundproof?
All glass doors are not soundproof, doors made with soundproof glass would reduce much more noise compared to traditional glass. However, additional measures like sealing the gaps would be required to completely soundproof a glass door.

Is bulletproof glass Soundproof?
The STC ratings of Bullet proof glass is 28 to 32 which is not very high. So, bullet proof glass is not specifically designed for the purpose of soundproofing.

Is Laminated glass good for soundproofing?
Laminated glass is effective in soundproofing compared to regular glass because the laminate layer absorbs the sound which does not happen in traditional glass. However, the type of glass used also affects the effectiveness.