Sound Deadener/ Sound Deadening Material - Stage 1

Sound Deadener - Stage 1 - 1 Box - 1.8 - Black
Sound Deadener - Stage 1 - 1 Box - 1.8 - Black


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Package Deals - Buy more and save
1 x Box  1.8sq/m 12 Sheets - Door/Boot Kit $104.99
2 x Boxes 3.6sq/m 24 Sheets - Floor Kit $199.99
3 x Boxes 5.4sq/m 36 Sheets - Boot or roof & Floor Kit $294.99
4 x Boxes  7.2sq/m 48 Sheets - Build Kit - Complete Car $379.99
Bonus Deals!
Buy any Sound Deadener and add a Roller +$19.99
Buy any Sound Deadener and add an Install Kit +$39.99

Car Builders Stage 1 Sound Deadener is a vibration (sound) dampening mat. It consists of a butyl rubber noise absorption layer combined with an aluminium top layer.

Each box has 12 sheets, each sheet is 300x500mm and 2mm-2.2mm thick

Car Builders butyl based Sound Deadener does not require heating, does not smell and will not go brittle over time, which are all qualities of old style tar or bitumen sound deadening materials.

Car Builders Sound Deadener has pressure sensitive butyl rubber which is sticky by itself so it does not run the risk of coming unstuck as there is no adhesive layer to fail.


  • Easy installation - just peel off the release liner and roll it on
  • 100% waterproof - does not rot or deteriorate
  • Cuts with scissors or a knife
  • Reduces heat transfer
  • Conforms and fuses easily to all types of sheet metal


  • Under carpets
  • Roof skins
  • Inside cavities
  • 1/4 panels
  • Doors
  • Boots/trunks
  • Firewalls

Colours (product is exactly the same - only the print on the aluminium changes)
Silver - Silver with black logo
Black - Black with silver logo
OEM Black - Plain black no logo

Sound Deadening FAQ

What does sound deadener do? 

Sound Deadener absorbs vibrations and adds mass to panels. This process will make your car or van quieter as it will reduce the resonance of the panels, removing that tinny sound thin sheet metal panels have. This will reduce echo and make the inside the vehicle a much more comfortable place. 


What Sound Deadener is best? 

Sound deadener is generally a misunderstood material. Normally the first stage of treating noise is referred to as ‘sound deadener’. This stage only really treats vibration in panels. It was often a bitumen-based product but more commonly consists of a butyl rubber with an aluminium top layer. Cheaper sound dampening sheets consist of a lower grade butyl, which is not as durable or resistant as those used by leading brands. Butyl sheets by themselves however, will not result in dampening droning or external noise that you may be more interested in treating. This will be treated more successfully with mass loaded vinyls. If you are aware of the type of sounds that are annoying, you will be able to treat them more successfully with targeted products. Please feel free to contact us to discuss this further for your vehicle (03 8777 0960).  


What is sound dampening in vehicles? 

This term is often confusing. In physics it means ‘restraining of vibratory motion, such as mechanical oscillations, noise, and alternating electric currents, by dissipation of energy. In a general sense ‘dampen’ means to ‘make less strong or intense’. There are 5 common elements to reducing sound; absorption, damping, decoupling, distance, and adding mass. Automotive structures limit the thickness of materials that can be used, but combinations of dampers, barriers, and absorbers are used to reduce sound. Surface damping materials such as butyl-based sound deadening sheets are very effective at reducing structure-borne noise. 


Is Sound Deadening worth it? 

Sound deadening is definitely worth it if you are in your vehicle a lot. It results in a significant reduction in decibels allowing you to hear passengers better, improve sound system quality and reduce the strain of noise pollution on the body. 


Are bigger sound deadening sheets better? 

As installers, we find that 500mm x 300mm are good size to deal with when installing. The reality is that you will rarely have panels that have open, single sheet metal panels larger than that. Rather, more often, you will need to cut down sheets. We have had rolls in stock before, however it just results in more effort in cutting. 


What can I use for sound deadening in a car? 

Our Stage 1 Sound Deadener is the first layer you need to apply when sound deadening a car. We then have carpet underlays and other foam insulation that you can apply over the top to block sound and help insulate cold and heat.   




See more clips on installing on our YouTube channel


Sound Deadener comes packaged in 1.8sq/m (20sq/ft) boxes, see below

- 12 sheets per box

- 2-2.2mm thick

    Sheet sizes is:

              300mm x 500mm

 All our colour options are the exact same sound deadener - same price, same size, same butyl rubber. It is only the colours that is printed on the top that changes. 

Silver - Silver with black logo
Black - Black with silver logo
OEM Silver - Plain silver no logo
OEM Black - Plain black no logo


Black Butyl based core with silvery aluminium reinforced layer backed with white wax paper release liner.

2.0 - 2.2mm

3.2kg/p sm

Acoustic Loss Factor:
(ASTM method E756 @ 200Hz, Temperature range -10°C to +60°C)
0.08 to 0.41

Recommended Install Temperature:
-10°C to +60°C

Resistance Temperature Range:
-40°C to +149°C

Chemical Resistance:
Resistant to water and mineral oils

Adhesive Peel Strength:
65N/cm on cold steel

Product should be stored at room temperature for best application and should be stored horizontally in its package.



Customer Reviews

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Sound Deadening Stage 1

By: on 8 January 2022
This gear is so good and the quality of the product is perfect. It is supple and easy to install with minimum tools. A great product to cut down noise and heat when installing in trucks/ cars a like.


Sound deadner

By: on 6 January 2022
Great product works well


Great service

By: on 1 December 2021
Yet to install, but the quality looks great compared to others I've seen. Install kit is solid, customer service is professional and friendly, delivery prompt.


So Easy!

By: on 14 November 2021
Having no experience or idea of what I was doing, it was so easy to use. The roller made applying the deadener sheets super easy. And it has without a doubt worked a treat in reducing the vibrations and sounds throughout my vanbuild. Thanks carbuilders!


Awesome products

By: on 2 November 2021
We’re renovating our 1963 Bedford bus and I’ve used all car builders stuff for the front cab. I’ve used the sound deadener, the acoustic insulation on top, and the automotive carpet on top of that. Our engine is in the front cab between our seats so it was important for me to do my research and get the best stuff. And I’m so glad I used the car builders. It’s been so easy to install and so easy to work with around all the curves and shapes of the bus. And I can tell it’s really high quality stuff. They’re super friendly and helpful on the phone. Couldn’t recommend them or their products highly enough. I recommend getting the install kit too


Easy Application and quick shipping

By: on 25 September 2021
Ordered stage 1 sound deadening for my van. Was so easy to install with the peel and stick method. Also recommend the installation kit, made life even easier.


Stage 1 sound deadener

By: on 12 September 2021
Just installed this on a 2020 VW transporter and it made a really big improvement in reducing noise levels and making doors close with that 'solid' feel. A great product.


If you don’t have Car builders… You don’t have the

By: on 26 August 2021
Have used other brands of sound deadening and by far the car builders is the best. Nice and easy to apply and works fantastic.


Excellent product, high recommendation

By: on 23 August 2021
This stuff is so easy to use, rolls in nicely to contours and most importantly absorbs vibrations instantly. I had to replace some rusted sections in the floor of my VB commodore and this stuff along with the stage 2 noise liner will make the VB sound a lot quieter and feel like a new car to drive. Well worth the effort!


Does what it says on the tin

By: on 6 August 2021
Great product. easy to use and great to have non-logo option. Excellent helpful Andrew as well. These people have skin in the game, and love to help, so buy from them


Donky bois be gone

By: on 10 July 2021
50/10 no more donky bois in the boot Do recommend


What a difference

By: on 18 June 2021
Applied sound deadening in an afternoon to my LDV G10. That van now feels like a $ 50000 van now. What a difference. Stage 2 to come. Amazing ease of application.


Forget spray on asphalt based sound deadener

By: on 15 June 2021
This product is great!! Make sure you get the installation kit, it's totally worth it just for the stubby cooler and bottle opener!!! For real though, you wont regret your decision to go with this product!


Look no further for your DIY sound deadening

By: on 15 June 2021
Most vehicle DIY projects amount to countless time spent figuring out how to use the product and often result in breaking the budget when you give and go to a professional to do it. This product does exactly what it is described and specified to do and is as easy to apply as you see in the instructional videos. I was taken back by the quality of the product and how easy it is to do by yourself. I recommend it, I will use it again. I cant wait to install the insul layer on the roof of my impala and use the stage 1 again on the floors along with the mass noise liner. Keep up the great work guys!!


Very good kit

By: on 1 June 2021
This kit arrived quickly and was super easy to install. I was worried after i purchased it because a few people i know had mixed results. I am glad to report mine has turned out great and this stuff really helps to deaden those harsh noises. Sooo keen for stage 2 as there is absolutely zero sound deadening from factory in a new Suzuki Jimny!