5 Most Common Vehicle Sound-Deadening Myths

5 Most Common Vehicle Sound-Deadening Myths You Need to Know

Driving a car is an experience you can improve with various services and accessories. For example, you can use more comfortable material for your seats, making long journeys much more convenient for you. These services are worth it since your car is a heavy investment you want to make the most of. You will likely use your car a lot, so we recommend getting these, transmission services provided by an expert, like My Transmission Experts. Another such service that you can take advantage of is sound-deadening.

How to Sound Deadening an old car

Sound deadening involves cutting out sound from the outside to the vehicle interior, making it quieter. This can be very convenient because most people love peace, making your driving experience peaceful. However, there are many sound-deadening myths out there that can put people off from getting their car sound-proofed. Not to worry, we have you sorted out. We will discuss some of these myths and tell you the truth about them so you know what you are getting when sound-proofing your vehicle.

Let’s dive in.

Common Vehicle Sound-Deadening Myths - Busted!

1. Sound-deadening material is only effective if it is heavier and thicker.

This is a common myth since most people associate sound suppression with the thickness of the material. While thick material can result in sound deadening, it is not the main factor. In fact, some materials are significantly less thick and can suppress sound much better. This is because many more critical factors dictate the material’s sound-proofing capabilities. Some of these factors include the density of the material, flow resistivity and cell size. Therefore, if you see your automotive specialist applying a material that doesn’t seem thick, you don´t need to worry.

For instance, B-Quiet Ultimate is relatively lightweight yet highly effective because of its butyl rubber composition and aluminum constraining layer, which absorb vibrations and prevent sound waves from transferring through metal surfaces.

The takeaway: Quality and composition matter more than thickness.

2. Sound-deadening material needs to be only applied to doors.

Doors are a great starting point, but they’re not the only culprits. Noise also seeps in through the floor, roof, wheel wells, trunk, and firewall.

To achieve the quietest cabin, apply sound-deadening material to multiple key areas especially those close to the engine, tires, and exhaust. Treating these zones ensures a well-balanced, quiet ride from every angle.

door with sound deadening

For complete coverage, explore the B-Quiet Car Sound Deadening Package designed for full-vehicle installation.

3. Sound-deadening material can cause damage when you try to remove it.

This myth comes from older, tar-based materials that used harsh adhesives. Modern products like B-Quiet Ultimate use high-quality, removable butyl adhesives that bond firmly without damaging paint or metal.

You can easily peel or heat the material for removal, no residue, no harm to your car’s finish.

B-Quiet Sound-deadening materials are safe, reversible, and vehicle-friendly when installed properly.

4. It would be best if you double-layered sound-deadening material for maximum effect.

Adding a second layer may seem like a shortcut to silence, but it often offers diminishing returns. Instead, focus on proper coverage and correct installation of a single, high-performance layer.

The real results come from sealing gaps, using consistent application, and pairing with sound-absorbing foam (like B-Quiet VComp) in key areas, not piling on extra layers.

One quality layer, properly applied, is better than two mediocre ones.

5. Sound-deadening only reduces sound and provides no other advantage.

This is an understandable myth because you only get this service to eliminate sound. For many people, this may not seem a worthwhile investment as they may not be bothered that much by the sound. However, sound-deadening material also provides advantages for the temperature of your vehicle’s interior. This is because this material is also insulating, ensuring the temperature is warm during winter and cool during summer. Therefore, you are getting more with this service besides lesser noise inside the car.

It’s not just quieter, it’s smarter, safer, and more efficient driving.

To sum up

Driving a car is an experience you can significantly improve with various services and accessories. There are many of these available for you to implement into your vehicle, including sound-deadening material. Sound-deadening can make your driving experience much more peaceful by removing sound from outside and the various moving components of your car. However, various myths about sound-deadening can make people hesitant to get these services. We have addressed these myths to ensure that you know exactly what you are getting when you get your car soundproofed.