If you have just installed a high-quality sound system in your car, chances are you want to enjoy that sound to the fullest extent possible. Learning how to soundproof a car will allow you to eliminate some road noise from outside the vehicle and keep the sound inside where it belongs.

Our guide below will teach you how to soundproof a car in 14 steps. We will also provide you with a list of the tools and materials you will need to get the job done and invite you to share your experiences with us.

Things You’ll Need

in the process of soundproofing care

The types of tools and supplies you might need in order to soundproof your car will vary depending on the method you choose. When learning how to soundproof a car, there are four primary methods you can use. You may wish to use more than one of these methods to increase the quality of the sound absorption. Some materials you might need include items such as:

The supplies above represent approximations and examples of the materials you might need for this job.

Step 1: Choose Your Materials

The first step in learning how to soundproof a car involves choosing the materials listed above. Keep in mind that the materials you choose may have an impact on how soundproof your vehicle is when you finish the job. You may wish to include different materials to enhance the process and the overall sound absorption.


Dampening mats are usually easy to install and made of rubber or a similar material. Many of these mats will include their own adhesive backing to make it easier for you to place them. You may wish to use mats to cover your car’s panels.


This product is designed to make your car’s carpet feel fluffier and absorb vibrations that travel on or below the floor.


Some aerosol sprays contain sound-dampening properties. These products may be most useful to you in tight areas if you feel that other materials are too bulky.


You can usually swap dampening mats for foam as they perform the same function.

Step 2: Prepare Your Surface

No matter which method you wish to use, the next step in learning how to soundproof your car is to prepare the surface of the vehicle. Performing this step can help your soundproofing products last longer and may make it easier for you to remove them if you wish to do so.

Depending on the materials you are using, you may be able to wipe the surface area to clean it. In other cases, you might need to sand some of the paint away. If you do wipe the surface area, it’s best to use an alcohol-based solution. This will help the glue on the insulation products to stick properly.

Method 1/Step 3: Apply the Mats or Foam

You are now ready to install dampening mats on the panels of your car. If your mats came with an adhesive backing, you can remove the covering from this adhesive and insert the mats. Otherwise, you can add your own glue or adhesive to help the mats stick to the surface. You can place mats in between the various door panels of your car and inside the engine compartment. Placing a mat between the panels will help you eliminate empty space, and placing one in the engine compartment will help to absorb rattling noises from the engine block.

Method 2/Step 4: Use Spray

Once you are have finished placing all the dampening mats, you may notice some empty spaces here and there. You can use an insulating spray to fill in the gaps in these areas. Check to make sure the spray is safe to use in areas like the engine block.

Method 3/Step 5: Use Insulation

The process for installing insulation to soundproof your car can be a little more involved than using foam or mats. However, it may provide greater sound absorption qualities inside the vehicle.

Step 6: Remove the Seats and Paneling

Before you learn how to soundproof a car with insulation, you need to remove all the seats and door panels from the vehicle.

Step 7: Take Measurements

You will want to cut the insulation to the exact lengths you need. Measure the surface area of your vehicle’s floor and its door paneling.

Step 8: Cut the Insulation

Cut the insulation into squares that match the measurements you took.

Step 9: Remove the Carpeting

You will need to pull up the carpeting on your car’s floor before you install the new insulation.

Step 10: Apply Adhesive

If your insulation did not come equipped with an adhesive layer, you will need to apply some glue to the surfaces you will cover.

Step 11: Press the Material

Use a firm, even motion to press the insulation down and affix it to the glue.

Step 12: Roll Out Bubbles

If you encounter any bubbles or lumps after installing the insulation, use a roller to remove them.

Step 13: Spray Any Cracks

As with mats or foam, apply dampening spray to any exposed areas.

Step 14: Replace the Carpet and Seats

After the insulation has had adequate time to dry, you can put the carpet and the seats back in the vehicle.

Wrapping Up

Learning how to soundproof a car may seem like a job that includes many steps. However, most of these steps are simple to do and will not take up much of your time. Soundproofing your vehicle provides you with a way to keep your music inside and unwanted noises outside. If you have used our guide, please share your experiences in the section below.

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