How to Soundproof a Car and Reduce Road Noise

SilentHomeHub is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

Silent Home Hub How To Soundproof A Car

Driving daily to and from work for years can be a routine that’s difficult to enjoy, especially when you’re stuck on the road amidst all the noises. 

Listening to the hustle and bustle of traffic can add up to the stress of driving. Going through the same commute after a long day is just as stressful.

The more vulnerable your car is to noise, the harder it is to have a quiet drive. Who wouldn’t want a peaceful commute before and after a busy workday?

For those who struggle with this, it might leave you pondering on how to soundproof your car. You’d also be happy to know there are many sound deadeners for cars in the market. These come with the design and performance of sound absorption.

If you’re looking for the best methods to solve your car and road noise problems, we’ve done the research for you! 

To get you started, here are all you need to know about soundproofing a car:

Table of Contents

How To Soundproof A Car?

Strong soundproofing involves blocking noises with thick walls to isolate sound. Completely soundproofing your car would need a lot of added mass onto your car.

It also isn’t ideal to soundproof your car completely. Not only is it impossible, but it’s also hazardous to not hear sounds from the road. Especially if you’re close to another vehicle, or if another car is coming your way.

There are many sound-deadening materials that reduce car noise by at least 50%. These products perform well enough for road noise to be inaudible.

Sound deadeners come with features to absorb loud noise and vibrations from your car. These sound deadener features don’t block noise as a whole, but they perform very well in muffling even the loudest parts of your car.

These materials are usually made of low density and flexible materials. Unlike soundproofing, sound deadening a car doesn’t add extra weight to it.

If you’re wondering where to get started, here are some areas to consider when soundproofing your car:

Ways of How To Soundproof A Car

1. Soundproof Floor Dampening Mats

A car’s undercarriage is closest to the road’s surface. When driving, the car floor takes direct impact from the ground and rubble.

The ground causes your car’s floor area to vibrate, which emits loud noises. Cars have floor mats in place to make their interior comfortable and aesthetic. But because of its cloth material, floor mats are usually not enough to reduce the floor’s noise level.

Instead, there are damping mats that can help solve your car’s floor noise problems. These noise deadener mats are foam-type and light in density. You don’t have to worry about adding extra weight to your car when replacing your floor mats.

Unlike most standard car floor mats, these noise-deadening mats are thick enough to soak up the loudest sounds from outside your vehicle. Sound deadeners do not block its entire sound, but they reduce road noise to its lowest level.

This makes it possible for you to hear your car radio, sound system, or have a quiet conversation amidst traffic or road noise.

Damping mats also come with insulating materials to protect your car’s interior from heat. The best quality noise-deadening mats also improve your car’s audio quality.

Man Peeling off Floor Dampening Mat

One thing you will find convenient about these damping mats is how easy it is to install them. Because they come with their own adhesive, all you have to do is peel and apply.

If your car floor makes the loudest noise in your car even with its floor mats, replacing them with damping mats would be a great option to start with.

2. Insulate Car Doors

Car doors have a thin and lightweight build. It comes with hollow compartments for its window, handle, and other controls.

They are also built with little insulation which makes it easy for outside noise to enter. Because of its thin exterior, dust or wind that passes along the surface creates wind noise.

When a car ages, it also becomes frailer. Its handle and hinges may also become a bit loose. This causes it to squeak or vibrate when driving.

To reduce your car door’s noise, what you can do is improve its insulation. A good way to insulate your car is to install foam insulation.

Foam insulation is like floor dampening mats based on its material and use. It’s made of butyl rubber with a foil constraint and adhesive.

The foam material soaks the noise and vibrations emitted from your car door. A plus factor when insulating your car door is that it also protects the interior of your car from heat.

Man applying foam insulation

To fully insulate your car doors requires a lot of patience to install it right. After unscrewing your car door panel, make sure you get its exact measurements. This helps you to properly insulate the door’s interior, leaving no area uncovered.

If the road noise and wind noise from your door is too much for you to take, adding insulation would be useful.

3. Soundproof Car Roof

The roof is one of the thinnest parts of your car. Because of its thin exterior, a single drop of rain on its surface is audible for you to hear.

Like car doors, the roof comes with minimal insulation which means it doesn’t block much outside noise.

To make your roof quieter, sound dampening mats also function well for sound reduction. This adds a bit more layer to your thin car roof preventing road noise from entering.

Sound deadeners are also easy to install. All you have to do is to peel and install the mat onto the entire roof area.

Make sure you remove the padded area of your roof because it defeats the purpose of your mat. Before you install the mat, also clean its surface from any dust particles or debris. This makes it easier for the product to stick to your roof.

Pile of sound deadening mats

Sound deadeners are usually heat resistant. Adding insulation to your car roof also protects it from hot temperatures. Since cars usually tend to heat up, it also prevents your car from overheating.

Are you concerned about the loud noises coming from your roof? If so, installing sound deadening mats would be a great solution.

4. Soundproof Tires

Your tires may seem very harmless, but they’re actually capable of being too loud. Driving on the road affects your tires because it creates an impact on the ground. 

This impact creates a type of noise called impact noise. The same noise you hear when a dish plate falls to the ground and everyone in the diner suddenly stops what they’re doing.

Whether it’s rough roads, rubble or debris, your tires are the only ones that come in contact with the ground. Choosing the right tires can make a difference to its loudness.

Low profile tires are great for aesthetic purposes. But keep in mind that because of its thinness, it doesn’t have enough rubber for cushioning. They also don’t absorb road shocks well. This causes vibration and loud noise from the tire’s metal wheel.

A good rule of thumb is to choose one that has more rubber. The more rubber your tire has, the better it absorbs shocks from the road.

Another feature to look out for is the tire width. A wide tire is not ideal because it has more contact with the ground. This allows the tire to feel more ground and rubble which causes strong vibrations.

Man Fixing Tires

If you want to reduce tire noise, make sure you find one that has the perfect balance between both.

5. Install a Quiet Muffler

One of the loudest parts of your vehicle is its exhaust system. If your automobile is aging, your exhaust system might emit loud noises. 

This could be due to its rusting or deterioration. It could also mean that your muffler is too powerful for your exhaust.

All cars come with their own mufflers to absorb engine sound waves and vibrations. Over time, these get weaker and you might have to check or replace them.

There are a lot of quiet performance mufflers that all reduce your exhaust system’s noise levels. These products come with their own sound-deadening material.

It comes with chambers, perforated tubes, or baffles to help control noise levels to the sound you want to achieve.

Quiet muffler qualities you should keep in mind are its size, type of muffler, and durability. If you want to choose the quietest muffler, it should have a wide opening for increased airflow.

Man Installing a Muffler

A muffler that allows abundant airflow in its exhaust pipe also powers up your engine. This is good for fuel-efficiency.

Choosing a quiet type of muffler improves the noise levels of your exhaust and engine compartment. If this is what causes loud noises for you, a muffler can help achieve quietness to a level that’s comfortable for you.

What Is The Best Sound Deadening For Car Parts?

What Is The Best Sound Deadening

We’ve discussed many different ways on how to soundproof a car. All these are effective solutions to your entire car noise problem. But not all these areas are applicable to everyone.

Choosing a multi-purpose sound deadener for car parts can help you save more on costs. It also prevents you from buying duplicates if it works for many areas.

There are a variety of products all designed to absorb loud vehicle parts and road noise. But it’s important to choose one that suits your preferred quality and performance.

If you’re excited but don’t know where to start, here are some of the best products for car soundproofing in the market:

1. Car Floor and Roof

Dynamat

Dynamat is a top-notch and most popular sound-proofing mat for automobile floors. It’s known for its exceptional performance in reducing road noise. Its high-quality material makes it one of the best thermal insulators on the market.

A feature you will love about the Dynamat is how it improves your car audio quality. Because of its diversity of usage, this noise-deadening floor mat is applicable to other noise control problems.

The Dynamat comes with quality features to soundproof your car, although most people find it expensive. Luckily, there are other competitive alternatives to the Dynamat.

Noico

If you’re looking for an alternative that costs less, Noico is a great option. Noico is a high-quality mat that’s effective in reducing outside noise.

Its sound-absorbing and heat resistance features make it a competitive mat against Dynamat when it comes to car soundproofing. Most users commend its performance for absorbing road noise well.

A key feature about Noico is how it’s applicable to any part of your car. It works well to reduce floor noise, but you can also apply this onto the roof.

READ MORE: Noico vs Dynamat: Which Sound Deadening Mat is Better?

2. Door Insulation

Noico

We’ve discussed how Noico is an alternative to Dynamat for vehicle floor soundproofing. Noico has a variety of uses. It also works well when applied to insulate your door.

Noico has sound-deadening and heat insulation materials, applicable for your door panel. If you’re looking to soundproof your floor and door, Noico would be good and cost-effective.

Second Skin Audio Door Kit

Second Skin Audio Door Kit is a high-quality sound dampening product for insulating vehicle doors. It’s an all-in-one bundle that has everything you need for door insulation.

Its material is of butyl-rubber foam material, which absorbs rattling and road noise. It also comes with annealed foil which makes it a good thermal insulator.

It’s one of the best vehicle door thermal insulators that improve the quality of your door audio.

3. Tires

Replacing all your tires into quiet ones might be costly. Luckily, there’s an easy way to soundproof your current tires.

Spectrum Sound Deadening Spray is a noise and vibration coating for your tires. It’s an easy-to-apply sound-deadening spray that can reduce noise from your wheels.

This liquid sound deadener can be for metal surfaces. By applying it to the metal wheel of your tire, it can reduce noise and vibration.

4. Muffler

Among all muffler types, the turbo muffler is the quietest to get for your car. It has many chambers and glass packs allowing more airflow in your exhaust.

Using a turbo muffler creates a low-tone and deep sound from your exhaust system. With this type of muffler, you won’t have to worry about your vehicle being too noisy.

Is Soundproofing Your Car Worth It?

Couple Talking Outside a Car

Noise-proofing your vehicle could be a life-changing experience. Especially to those who go through a noisy commute everyday.

Soundproofing reduces the noise that enters your car cabin. Installing insulation and sound deadening materials lowers the tone of your car noise. It also gives you a more peaceful drive by reducing road noise in general.

All areas of your car may not need soundproofing. Additionally, it might cost you to have your entire car soundproofed. Which is why it’s best to choose the right product that covers many areas to absorb road noise.

Are you now excited to get started on soundproofing? I hope this article helps you reduce your car noise problems.

Soundproofing is definitely worth exploring! Most especially for those who are seeking quiet solutions for driving.

If you’re experiencing loud ticking noises while driving, it could be because of noisy lifters.

Check out our guide on How to Fix Lifter Tick on Your Noisy Lifters to get you started.

About the Author

andrea_adams

Andrea Adams

Fidgeting with gadgets and electronics has long been Andrea’s expertise. She has assembled, disassembled, and tweaked almost every type of device you can think of. Through the years, she has come to realize that technology should never be fussy. And that’s where her interest in quiet products stemmed from. She hopes to become your go-to person for insight when deciding on noiseless goods to purchase.