5 Essential Facts About Sound Deadening Material for Cars

best Sound Deadening Material for Cars

Imagine driving in your car and enjoying your favorite music without the annoying road noise, vibrations, or engine sounds interfering.

Sound deadening can make this your reality. These materials can transform your vehicle into a peaceful oasis, allowing you to focus on the road and have clear conversations without raising your voice.

In this blog post, we will explore the world of car sound deadening materials, factors to consider when choosing them, top recommendations, installation tips, and common mistakes to avoid. It’s time to elevate your driving experience to a whole new level!

Short Summary

  • A sound deadening material, such as foam and mass loaded vinyl, can reduce noise and vibrations in cars for a more comfortable driving experience.
  • Factors to consider when selecting the sound deadening material include quality of the material, installation ease & budget.
  • Common mistakes made during installation include overlooking key areas, using low-quality materials & improper application techniques.

Understanding Sound Deadening Materials for Cars

As an affiliate, I may collect a share of sales or other compensation from the links on this page.

Sound deadening is the process of reducing noise and vibrations in your car, making the interior a quieter and more comfortable environment. There are various materials available, including foam, mass loaded vinyl, butyl rubber, and spray-on coatings.

To achieve the best results, it’s important to consider the dimensions of sound deadeners, the type of vehicle, the size of the car, and the scope of the project. Let’s dive deeper into the purpose of these materials and the different types available.


Sound deadening materials help to decrease noise and vibration in cars, providing a more enjoyable driving experience. Their effectiveness is influenced by factors such as density, flow resistance, and cell size, rather than just thickness alone.

Using high-quality foil helps to restrain the butyl adhesive, which in turn, impedes vibrations.

However, not all materials are created equal. For example, asphalt is no longer used in automotive sound deadening due to health concerns and inferior performance.

The primary goal is to suppress unwanted sounds, such as road noise, engine noise, and airborne sound waves. This enhances the overall sound quality within the cabin, allowing you to listen to music, podcasts, or have conversations without distractions.

It’s essential to choose a material that is effective in reducing noise and vibrations while being compatible with your vehicle’s specific needs.

Types of Sound Deadening Material

There are several types of sound deadening material commonly used in automobiles, including foam, mass loaded vinyl, butyl rubber, and spray-on coatings.

Foam, for instance, is employed to address airborne sound waves such as the sound of passing vehicles and other external noise. However, if not used properly, the foam may negatively impact soundproofing quality within the cabin.

Spray-on sound deadeners, on the other hand, are applied to surfaces through spraying, and their consistency is similar to that of rubberized undercoating. These are especially useful for areas with limited access, such as inside the fenders and wheel wells.

Each type of material has its advantages and drawbacks, so it’s crucial to consider your vehicle’s specific needs and the desired level of sound deadening when choosing the right material.

Factors to Consider When Choosing Sound Deadening Material

installation of sound deadener, an important factor for choosing the right sound deadener for cars.

Selecting the right product is essential for a successful noise reduction project. There are several factors to consider when deciding, including quality, installation ease, and budget.

In the following sections, we will discuss these factors in detail and provide guidance on what to look for when choosing a sound deadening material.


Quality is a crucial factor to consider when selecting material, as it directly impacts the material’s ability to absorb or disperse sound.

Acoustic foam, fiberglass, and acoustic isolation products are among the most effective ones for sound deadening, as they absorb or disperse sounds. However, weight is not a significant factor in the effectiveness of sound dampening, and lighter materials can be easier to install.

When evaluating the quality, it’s essential to consider the formula of the coating (elastomeric versus fillers) and the quality of the foil (rigid versus fragile).

High-quality materials will not only block unwanted sound, but also last longer, ensuring a more comfortable driving experience for years to come.

Installation Ease

Ease of installation is an important factor when selecting the sound deadening material, as it directly impacts the time and effort required to complete the project.

The simplest way to install is to choose a product designed for easy application, such as self-adhesive mats or spray-on sound deadeners. Other installation methods include attaching the material to the car using adhesive tape, glue, or clips.

To ensure a successful installation, it’s important to properly prepare the surface and use the correct application techniques, as well as cover all pertinent areas. By choosing a material that’s easy to install, you can save time and effort while ensuring a professional result.

Budget and Cost

The cost can vary depending on the type and quality of the material. Generally, higher quality materials may be more expensive, but they could potentially provide better soundproofing.

Some cost-effective ones include mass-loaded vinyl, acoustic foam, and fiberglass insulation, which are relatively inexpensive and offer good soundproofing capabilities.

There are a few strategies for saving money on these products. You can purchase in large quantities to take advantage of discounts, compare prices to get the best deal, and look out for sales and promotions.

By carefully considering your budget and the cost of different products, you can make an informed decision that meets your sound deadening needs without breaking the bank.

Best Sound Deadening Materials for Cars

In this section, we will present our top sound deadening material recommendations, including Dynamat 10455, Noico 80 mil, and Second Skin Spectrum. These products offer a range of benefits and have been proven effective in reducing noise and vibrations in cars.

Let’s explore each of these recommendations in detail.

Best Overall: Dynamat 10455

Dynamat 10455 is a sound deadening mat constructed from butyl rubber and aluminum, designed to reduce road noise, engine noise, and vibration in vehicles. It is made of thick material and offers a 5-decibel reduction in sound energy and has a thermal resistance of 225°F.

While it’s an excellent choice for most cars, there are a few drawbacks to consider, such as its relatively thin and costly nature.

However, the benefits of Dynamat 10455 far outweigh its drawbacks, making it our top overall recommendation. Its high-quality construction ensures effective sound suppression and long-lasting performance.

By installing Dynamat 10455 in your car, you’ll experience a significant improvement in noise reduction, leading to a more comfortable and enjoyable driving experience.

Check out my Dynamat review.

Best Value: Noico 80 mil

Noico 80 mil is a sound deadening mat made of a butyl rubber base, with a thickness of 80 mils (2 millimeters) and a weight of 0.7 pounds per square foot. The foil surface has a special embossing which needs to be rolled out until it feels smooth.

To ensure the desired effect is achieved, a roller must be used. This product is an excellent value option for those looking to reduce noise and vibrations in their car without spending a fortune.

Although Noico 80 mil may not be as effective as butyl in certain applications, it still provides substantial noise reduction and acts as a thermal insulator. Its ease of installation and affordability make it our top recommendation for the best value sound deadening material.

Best Spray-On: Second Skin Spectrum

Second Skin Spectrum is a liquid sound deadener designed to reduce road noise, engine noise, and vibration. It is available in two types of sound deadening mats (Damplifier and Damplifier Pro) and a liquid sound deadener (Spectrum).

The spray-on application makes it an ideal choice for hard-to-reach areas like fenders and wheel wells.

The benefits of using Second Skin Spectrum include its ease of application and consistent, dark grey appearance when dry. This spray-on sound deadener is our top recommendation for those looking for an easy-to-apply, effective solution to reduce noise and vibrations in their car.

Also read: Fatmat vs Second Skin vs GTmat

Tips for Installation

sound deadener installation

Now that you’re equipped with the required knowledge and our top recommendations, it’s time to discuss some tips for installing these materials in your car. Proper installation is key to ensuring their effectiveness.

In the following sections, we will cover tips on preparing the surface, application techniques, and coverage areas.

Preparing the Surface

Before installation, it’s essential to prepare the surface by removing upholstery and paneling to expose the bare metal, followed by cleaning the metal.

Degreasing and cleaning the surface ensures that the material is properly applied and that no impurities are present that could impede the installation process. Inspect the surface for rust and corrosion as well, addressing any issues before applying the material.

If the surface requires sanding, use fine-grit sandpaper to create a smooth and even surface. This guarantees that the material is firmly attached to the surface. Once the surface is clean, smooth, and free of rust or corrosion, apply a thin layer of primer using a brush or roller for optimal adhesion.

Application Techniques

Effective application techniques are crucial for the success of your sound deadening project. It’s important to cover all metal surfaces, such as door panels, roof, trunk, and floor, to significantly reduce unwanted road noise.

Professionals in the field can provide valuable tips and tricks to ensure a successful application. For instance, using self-adhesive sheets in sound absorbing materials not only improves performance but also simplifies the installation process.

When installing the Ez-cool insulation kit, a straightforward method is to use spray adhesive for optimal results. By following the recommended application techniques and covering all necessary areas, you’ll achieve the best possible noise reduction in your vehicle.

Coverage Areas

The recommended coverage area for sound deadening material plays a significant role in its effectiveness. At a minimum, at least 25% of the surface should be covered with the material, with 60% coverage being the optimal level for most vehicles.

By covering the door panels, floor, wheel arches, firewall, trunk, ceiling, and hood, you ensure optimal performance and a significant reduction in noise and vibration.

It’s essential to use enough material to cover all metal surfaces thoroughly, as this will guarantee the most effective noise reduction. By following the recommended coverage areas, you’ll be able to enjoy a quieter and more comfortable driving experience.

Here is a short video guide:

Common Sound Deadening Mistakes to Avoid

When it comes to sound deadening, there are some common mistakes that can hinder the effectiveness of your project. By being aware of these mistakes and taking steps to avoid them, you can ensure the best possible results for your sound deadening efforts.

In this section, we’ll discuss the most common mistakes to avoid, including overlooking key areas, using low-quality materials, and improper installation.

Overlooking Key Areas

When installing sound deadening material, it’s crucial to address all key areas that generate vibration and noise, such as doors, floor, wheel arches, firewall, trunk, ceiling, and hood.

Overlooking any of these areas can result in less effective noise reduction and a less comfortable driving experience.

Ensure that you thoroughly assess your vehicle and identify all potential sources of noise and vibration. By addressing these key areas, you’ll maximize the effectiveness of your sound deadening project and create a more comfortable and enjoyable driving environment.

Using Low-Quality Materials

Utilizing low-quality sound deadening materials can lead to heightened noise and vibrations in the car, as well as a diminished lifespan for the material.

Low-quality materials are typically thinner and have a lower density, making them less effective in absorbing vibrations and noise.

Investing in high-quality sound deadening materials is essential for the overall success of your project. By opting for materials with a proven track record of effectiveness and durability, you can ensure a more comfortable driving experience and better long-term results.

Improper Installation

Improper installation of sound deadening material can result in less effective noise reduction and even damage to the material.

The most frequent errors during installation include not adequately cleaning the surface before installation and not using enough material to cover all metal surfaces, such as doors, roof, trunk, and floor.

To ensure a successful installation, it’s important to properly prepare the surface, use the correct application techniques, and cover all pertinent areas.

By avoiding these common installation mistakes, you’ll achieve the best possible noise reduction and enjoy a more comfortable driving experience.


In conclusion, sound deadening materials can significantly improve your driving experience by reducing noise and vibrations in your vehicle.

It’s crucial to understand the different types of materials available, consider factors such as material quality, installation ease, and budget, and follow expert recommendations and installation tips.

By avoiding common mistakes and ensuring proper installation, you can transform your car into a peaceful oasis on the road. It’s time to elevate your driving experience and enjoy the benefits of sound deadening materials in your car.

Frequently Asked Questions

Is sound deadening material worth it?

Overall, sound deadening material is well worth it. It reduces annoying noises from both outside and inside the car, allowing you to enjoy a more peaceful ride. Additionally, it makes your music sound better and can even add an extra layer of safety by dampening sound-waves that may cause damage to the interior of your vehicle.

What is the best thickness for sound deadener?

When it comes to sound deadening, the 80 mil variant tends to be the most popular choice and is usually enough for most cars. However, for the best performance possible, you should consider a product that is even thicker, such as one with a thickness of 400 mil.

What can you use to sound deaden a car?

For sound deadening in your car, try using spray-on dampening foam or a combination of Dynamat and a foam barrier. Both products will help minimize sound coming into the cabin. These products are easy to install and can be found at most auto parts stores. They are also relatively inexpensive, making them a great option for those on a budget.

What is a good sound deadening material?

When choosing sound deadening materials, the best choice is those that absorb or disperse sound. Materials such as acoustic foam, fiberglass, and acoustic isolation materials are all great choices for sound deadening purposes. By selecting one of these materials, you can ensure your space has the desired level of noise reduction.

Similar Posts