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Sound Deadening Material for Cars: The 8 Best Options

Sound Deadening Material for Cars

If you travel long distances quite often, you know that proper noise control in your car or vehicle is extremely important.

After all, WITHOUT effective insulation material, loud vibrations, stereo sounds, and road and engine noise can make your driving experience a terribly uncomfortable one.

Fortunately, there are a ton of great sound-deadening materials in the market to help minimize the noise in cars. Here, we’ve rounded up the best automotive sound deadening products to fit every need and budget!

Best Budget Pick
Noico Automotive Sound Deadener
Best Overall
Dynamat Self-Adhesive Sound Deadener
Best for Beginners
Kilmat Car Sound Deadening Mat
Table of Contents

8 Best Automotive Sound Deadening Materials

#1 Dynamat Self-Adhesive Sound Deadener

Best Overall

Dynamat Self-Adhesive Sound Deadener

The Dynamat brand name is well known for its top-notch automotive products, particularly because of their effective sound insulation and heat insulation capabilities.

Let’s take a closer look at how the company’s sound deadener works.

Reliable, Quality Features

Because the Dynamat Sound Deadener is made of quality aluminum and butyl rubber, the product is not only sound dampening; it’s heat-resistant, odorless, and lightweight too.

Worried about the installation process?

Don’t sweat it!! Literally.

This all-around best sound deadening material can conveniently be used on your car doors, trunk, and floors for superb road noise insulation and improved audio quality.

In fact, after using the product, users report a 5-decibel drop in sound level!

Here’s a better translation of what we mean: complete coverage of your car should reduce road noise by 9-18 decibels.

Easy to Install

What’s the point of quality if it doesn’t stick? Get it? Stick. Like glue?

The Dynamat Sound Deadener boasts a permanent self-adhesive.

And according to our tests, it firmly latches onto your vehicle, even after a long period of time. Just like bubblegum sticking on your sole.

Just follow the easy installation instructions, and you’ll be done in no time!

If you’re concerned about hard-to-reach areas, you’ll also be glad to know that this sound deadening mat is made of a flexible material as well, which is perfect even for irregularly shaped and/or textured surfaces.

Great Accessory Products

Although the Dynamat Sound Deadener works well on its own, pairing this product with Dynapads and Dynaliners can work wonders for your sound quality. 

Go cruising and feel the full sound of Spotify’s Chill Hits without the annoying humming and revving exterior sounds.

Layering Dynamat products greatly dampen vibrations from your vehicle engine, chassis, and the road. As a result, it’ll not only be quieter inside the car, but you’ll also be able to enjoy your music more.

Higher Price Point

Price-wise, Dynamat products are on the higher side, but hey, aren’t you tired of having to compete with your car’s engine noise?

Trust us. We’re saying this from a long-term standpoint.

How to Install:

  • Clean and degrease the entire surface where you want to install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on doors, floors, or other places where you want sound insulation.
  • Flatten out the product with a roller.

| PROS

  • Storage friendly
  • Made by a reputable brand
  • Easy to install
  • Flexible material
  • Heat-resistant material
  • Highly effective and durable sound deadener

| CONS

  • Pricey
  • Extra accessory required for installation process
  • Its design will stand out if it’s placed in exposed areas

#2 Noico Automotive Sound Deadener

Best Budget Pick

Noico Automotive Sound Deadener

If the Dynamat is out of your price range, the Noico is the next best option!

This budget-friendly product is thick and butyl-based, which means it still has the essential components of an effective sound deadener.

Practical and Affordable

At only around $1.8 per square foot of material, the Noico Sound Deadener is one of the most affordable options around.

The best part is, Noico isn’t the kind of cheap that rips you off with secondhand quality. Rest assured, you can rely on the quality Noico delivers. Below, you’ll see exactly why.

User-Friendly Features

Despite its low price, this sound deadening mat is EXTRA THICK with self-adhesive properties, which makes it both durable and convenient.

You hear that? NOT THICK. Not JUST dense. EXTRA THICK.

What’s unique about its design is it comes with a special embossing that indicates whether or not it was applied correctly to the car surface. When installing, make sure to completely roll out the material until it’s smooth.

For those concerned about aesthetics, consider purchasing the black version of this sound-deadening product—when used on exposed areas, it’ll blend in quite seamlessly!

Take note, though:

Although this automotive sound deadening material can be used with the Noico Red Liner, a closed-cell polyethylene foam product that further improves car insulation, it’s great on its own too.

Use the Noico 80 Mil on your car doors, trunk, wheel wells, or on any other place that experiences strong vibrations.

Potential Odor Problems

However, one thing to note is that some users have observed a rubbery scent upon installation.

Although others don’t notice any odors at all, you should test out the product first or check it out at a physical store if you’re sensitive to this.

How to Install:

  • Clean and degrease the surface where you’ll install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on doors, floors, or other places where you want sound insulation.
  • Flatten out the product with your hands or a roller to release air bubbles. You’ll know it’s applied properly if the embossing is completely flat and smooth.

| PROS

  • Very affordable
  • Easy to install
  • Multipurpose sound deadener

| CONS

  • It may have a rubber smell
  • Not the most effective at sound dampening compared to higher-end alternatives

#3 Kilmat Car Sound Deadening Mat

Best for Beginners

Kilmat Car Sound Deadening Mat

The Kilmat Car Sound Deadening Mat is another affordable option that’s worth considering.

Although installation is a bit trickier with this one, it does make a difference in cars’ overall sound quality.

Simple and Easy to Use

Unlike other sound deadening products, Kilmat comes in small, pre-cut sheets that are easier to work with, especially for those who are beginners at DIY.

Think of Kilmat as the no-fuss solution for those who are worried about screwing up their first installation.

In fact, it even features a grid pattern, which is helpful if you need to do more precise cutting for irregularly shaped vehicle parts.

Just remember to use a roller during application so you get professional-level results!

Good for Car Insulation

The Kilmat Sound Deadener is also great for both sound waves and heat insulation.

Its self-adhesive butyl material and foil materials effectively handle rattles and vibrations coming from your car engine, plus it eliminates annoying road noise—even when you’re driving on the highway.

This sound-deadening material also holds up well in all kinds of temperatures, so not even temperatures where Whitewalkers live can damage the material.

Quite Unwieldy

However, one con is that this sound-deadening material can be a little stiff and unwieldy. Because the foil material has a square pattern, it’s harder for the roller to evenly press down on it as well.

These make the Kilmat Sound Deadener a bit difficult to install, but it’s definitely doable with some patience and effort on your part!

How to Install:

  • Clean and degrease the surface where you’ll install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on doors, floors, or other places where you want sound deadening.
  • Flatten out the product with a roller to release air bubbles. You’ll know it’s applied properly if the convex foil layer is completely flat and smooth.

| PROS

  • Affordable
  • Strong and durable adhesive
  • Odorless

| CONS

  • Heavy
  • PriA bit difficult to install
  • Thinner compared to other sound-deadening materials

#4 Thermo-Tec Heat and Sound Suppressor

Thermo-Tec Heat and Sound Suppressor

If heat insulation is as important to you as sound deadening, then you’ve found the warmth you need in Thermo-Tec products, which are highly capable in both aspects.

Quick Application

First time using a sound deadener? All you have to do is trim, peel, and apply!

We like how it’s easy to cut this sound deadener material to fit your desired surface. After peeling off the protective layer, you can apply it by hand onto the part you want to cover as well.

Note that using a roller will give you cleaner and more professional-looking results, but it should still work properly either way.

Great Heat-Insulating Properties

Besides having good sound-deadening characteristics, Thermo-Tec products are great at keeping away heat too.

This is because the Thermo-Tec Heat and Sound Suppressor feature a polyethylene surface that provides direct protection from radiant heat.

People usually use this on the floors and doors of their cars for maximum effectiveness.

Weak Adhesive Bond

Although these sound like great benefits, Thermo-Tec doesn’t do so well at high temperatures.

Because its self-adhesive is quite weak, there have been occurrences of the glue melting and dripping all over the car engine. Once this happens, the surface gets sticky, which makes it even tougher to remove too.

How to Install:

  • Clean and degrease the surface where you’ll be putting the sound deadening material.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on doors, floors, or other areas where you want sound deadening.
  • Flatten out the product using your hand or a roller.

| PROS

  • Easy to install
  • Great at reducing heat
  • Good sound absorber

| CONS

  • Hard to remove
  • Adhesive weakens at high temperatures

#5 Uxcell Car Noise Sound Deadener

Uxcell Car Noise Sound Deadener

Like some of the other products on this list, the Uxcell Car Noise Sound Deadener boasts both sound and heat insulation properties.

However, unlike those products, this one comes in a very thick roll (as in…thick as a strawberry custard jelly roll thick) that’s suitable for more heavy-duty applications.

Durable and High-Performing Material

Sized at 349 mils, the Uxcell is one of the thickest automotive sound deadening products in the market, which makes it quite effective at blocking noise.

Too boring already? Too repetitive? Then allow us to tell you something different.

Its material is waterproof and scratch-resistant, so it’s perfect for wet weather and driving through rough terrain.

Unlike more delicate products, the Uxcell has a lower risk of getting damaged while undergoing repairs.

You won’t find a lot of deals with that much benefit.

Great at Regulating Temperature

Besides minimizing car noises and vibrations, Uxcell also blocks excess heat, which could negatively affect your car engine and machinery.

Specifically, its fiberglass and aluminum materials work together to block heat during the summer (while keeping it in during the winter) to protect car parts from unintended damage.

By properly regulating temperature, car paint aging and cracking will also be minimized. Because you’ll be reducing overall energy consumption, you’ll be saving on fuel costs too!

Difficult to Install

However, due to its material specifications, the Uxcell Car Noise Sound Deadener is quite hard to install.

  • First of all, cutting through the extra-thick material is a challenge. You’ll definitely need to exert more effort during this step.
  • In addition, although it has a self-adhesive backing, you may need to apply extra adhesive tape to ensure a strong bond. Again, because the material is very thick, it’s best to take precautions to prevent problems down the line.
  • Lastly, you should know that this sheet could add a lot of stiffness to the body of your car. Unlike more lightweight products, the Uxcell is bulkier and heavier, so it may not be suitable for smaller cars.

How to Install:

  • Clean and degrease the surface where you’ll be putting the sound deadening material. Make sure it’s completely dry before application.
  • Cut the sound deadener material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on doors, floors, or other areas where you want to reduce noise. Use adhesive tape for a stronger bond.
  • Flatten out the product using your hands or a roller.

| PROS

  • Thick and durable material
  • Waterproof
  • Scratch-resistant
  • Effective at reducing heat and keeping the cold out

| CONS

  • HNot the best at noise control
  • Heavy
  • A bit difficult to trim and install

#6 FatMat Sound Deadener

FatMat Sound Deadener

FatMat automotive sound deadening products are quite popular in the market, but are they the most effective out there? Let’s dive into its material specifications and features to find out.

Good Functionality

First of all, the FatMat comes in a roll instead of a sheet, which is ideal for a project requiring custom measurements.

We appreciate that it comes with a knife and a roller for easy cutting and application as well since most sound deadening products don’t include these in the package.

What else does FatMat have in store for you? Here’s what:

  • FatMat has an aluminum coating for efficient heat resistance. Since insulation is vital to prevent car damage, it’s important to choose products that have this feature.
  • Unlike many higher-end sound-deadening materials, FatMat uses asphalt-based material instead of a butyl-based material. Because the former is not as effective at reducing noises and vibrations, you shouldn’t expect it to perform as well as one made from butyl rubber.

With that said, the FatMat is able to reduce noise by around 3 decibels, which is still a fairly solid number.

Tricky Installation

Even though the FatMat should be easy to place onto any car surface, in reality, the process can be quite tricky.

Many users recommend applying constant pressure to ensure the material stays smooth and flat, and some even use hair dryers or heat guns to aid with correct installation.

Weak Adhesion

Like the Thermo-Tec option, FatMat may start to adhere poorly in higher temperatures. Those living in warmer climates should keep this in mind before purchasing one for their car.

How to Install:

  • Clean and degrease the surface where you’ll install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the sound deadener material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it in areas where you want to reduce noise.
  • Flatten out the product using the included roller.

| PROS

  • Comes with a knife and a roller to help with the installation
  • Good heat resistance
  • Pliable material

| CONS

  • A bit difficult to install
  • It has a tendency to loosen in higher temperatures
  • Some users don’t like the smell
  • Not the most effective at blocking unwated noise

#7 HushMat Sound Dampening Pad

HushMat Sound Dampening Pad

Having a problem with loud noises in your car? Then HushMat is one of the best automotive sound deadening options out there for you.

What makes them different, you ask? Well…It starts with a T.

Tolerates High Heat

Many of the products mentioned may not work so well when exposed to high temperatures, as these could interfere with adhesion.

However, HushMat can tolerate temperatures ranging from -30 F to 400 F, so it’s suitable even in warmer places.

Additionally, this product even reduces thermal energy by up to 40%, so you’ll stay cool and comfortable while driving in the summer.

Functional Product

Now, what about sound quality and insulation? Because HushMat is made of butyl, it performs quite well in these aspects—in fact, it’s even used by major automakers to eliminate road noise.

We also like how Hushmat is pliable with a black foil finish. It not only conforms well to curved surfaces in the car but also adheres well to oily metal surfaces.

Best of all, you can stick the inconspicuous black sheet almost anywhere without it ruining the aesthetic of your car!

Quite Expensive

However, like the Dynamat, HushMat is priced on the high side.

If you have the money to spend, we highly recommend checking this out as an all-around solution to your automotive sound deadening needs!

How to Install:

  • Clean and degrease the surface where you’ll install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on the places in your car where you want to reduce noise.
  • Flatten out the product with a roller.

| PROS

  • Storage friendly
  • Effective sound dampening material
  • Withstands high and low temperatures
  • Flexible material
  • Adheres well on all surfaces

| CONS

  • Pricey
  • Separate roller required for installation

#8 Siless Car Sound Deadening Mat

Siless Car Sound Deadening Mat

If you’re on the hunt for affordable sound-deadening materials, the Siless mat is another good choice. Although it isn’t up to par with the Dynamat, it still improves the sound quality quite a bit.

Just try and take a bite off this apple.

Budget Option

Priced at around $1.53 per square foot of insulation, the Siless is one of the most budget-friendly options in the market.

If you’ve already spent tons on car repairs, upgrades, and accessories, you might be looking for a way to cut costs.

Fortunately, the Siless adequately blocks out loud noise at a fraction of the price. Just don’t expect a drastic change in the acoustics of your car.

Quick and Easy

Another great thing about the Siless is it’s very quick and easy to install. It requires zero prep to get started—all you have to do is peel and place the sound-deadening materials onto your car.

Of course, a roller would be ideal to smooth out any creases, but you can still apply these insulation materials without one.

Each sheet adheres quite well to the surfaces of your car, so you won’t have to worry about these materials loosening immediately.

Quality Could Be Improved

However, its low price also means it’s not as high-quality as other sound deadeners.

Users report that it’s quite thin for 80 mils of materials and that it’s not the most effective at blocking noise, but it works sufficiently when you’re in a pinch.

Overall, it offers good functionality considering its price, but if you have the means, you may want to consider other alternatives.

How to Install:

  • Clean and degrease the surface where you’ll install the sound deadening material. Make sure it’s completely dry before application.
  • Cut the deadening material to your desired size.
  • Peel off the protective layer that covers the adhesive.
  • Paste it on the parts of your car where you want to reduce noise.
  • Flatten out the product using your hands or a roller.

| PROS

  • Affordable
  • Easy to install
  • Good adhesion

| CONS

  • Material is a bit thin
  • Not the best solution for noise reduction

How Do Automotive Sound Deadening Materials Reduce Noise?

When you attach sound-deadening materials to your car, you prevent outside noise from vibrating the metal panels of your car and transferring inside the vehicle. These work because of the added mass that absorbs a significant amount of sound energy.

Because these sound deadeners reduce background noise, the audio quality will improve inside your car.

You’ll be able to hear your phone calls so much more clearly without loud traffic sounds, car engine vibrations, and other noise sources.

Lastly, sound-deadening insulation also prevents sounds from escaping, so people outside won’t be able to hear what’s going on inside your car.

Where to Put Automotive Sound Deadening Materials In Your Car

For optimal insulation, you should install automotive sound deadening materials on the car hood, doors, roof, trunk, interior floor, and wheel wells. These areas are most susceptible to heat, mechanical rattles, engine, road, and wind noise, as well as vibrations.

However, because applying these materials to your whole car can be costly, you can focus on main areas such as the car door, trunk, and floor.

Remember to remove outer coverings such as car mats/floor mats and door panels before applying these insulation materials!

To determine how much product you need for your car, you can look up estimates online or contact your local store for more information.

Helpful Installation Tools

Rollers

Although rollers aren’t absolutely necessary when applying sound deadening material, they make the process a lot easier and cleaner.

If your purchase doesn’t come with a roller, we recommend buying one anyway to prevent any creases post-installation.

In addition, this tool helps you get to harder-to-reach areas and ensure the product’s complete adherence.

Adhesive Tapes

Next up are adhesive tapes.

Although most sound-deadening materials are self-adhesive, sealing tapes are sometimes still used to strengthen the bond and to connect the joints between two sound-deadening mats.

Waterproof options are also great for an added layer of protection.

If you do decide to get adhesive tapes, consider purchasing from reputable brands such as Dynamat or Noico. You can also choose ones made by the brand you bought your sound-deadening mats from for maximum compatibility and effectiveness.

Heat Guns

Lastly, heat guns are used to ensure proper installation, especially in colder weather when it’s harder for the product to stick to the surface of the car.

However, keep in mind that most good-quality sound deadeners DO NOT need this tool.

In fact, the best ones are carefully formulated so that all you have to do is peel and stick them on the areas that require sound isolation.

Buying Guide for the Best Automotive Sound Deadening Materials

Before arriving at a verdict, let’s take a look at some important characteristics in-depth.

To figure out which the best automotive sound deadening mat is, you should consider a bunch of different aspects and see how your options measure up in each category.

Material

Material Icon

Although most of these car insulation materials are all-around products, some types are developed specifically for certain areas of the car.

For instance,

  • The typical car mats are used for big panels, while foam products are placed underneath floor mats to further reduce noise and heat.
  • Sound dampening sprays, on the other hand, are used when matting won’t work for a certain area.

Some brands like Dynamat and Noico offer specialized products for these purposes like the Dynaliner (for headliners), the Dynapad (for floors and trunks), the Dynamat Hood Liner (for hoods), and the Noico Red Liner (for layering).

These often have extra features too such as water resistance, heat resistance, and odor-blocking. If you have the budget, consider purchasing these accessory products for the best results!

Thickness and Size

Thickness and Size Icon

Because these soundproofing materials depend on mass to block noise, thicker and denser sound-deadening mats are better at reducing unwanted noise and vibrations.

Now, the thickest one on this list is the Uxcell at 349 mils, but you can opt to layer other kinds to achieve a similar effect. The Uxcell may also be more difficult to install by yourself because of its size.

Flexibility

Flexibility Icon

Another important factor to consider is how pliable the automotive sound deadening material is.

Since you’ll be applying this to different parts and crevices of your car (which aren’t all flat or smooth), choose a product that fits each space perfectly.

If the sound deadener is too stiff, it won’t adhere as well to the surface. Besides looking sloppy, it won’t be as effective at reducing unwanted noise too.

Style

Style Icon

Speaking of aesthetics, you should also consider how the product looks when installed in your car.

Although these soundproofing materials will typically be covered, sometimes, they’ll have to be placed in exposed areas too. Bright and distracting designs wouldn’t look too good in that case.

To be safe, pick a simple and understated design—black usually works best—and if you have the option to ditch the brand logo, do it!

Make sure the sound deadener doesn’t require complicated installation too. Use ones that can be rolled out quickly and easily for a wrinkle-free finish.

Practicality

Practicality Icon

Because you’re already spending on this item, it’s wise to pick one that can also double as insulation material. Extremely high and low temperatures affect both your comfort and the state of your car, so it doesn’t hurt to get some added protection.

Also, pick sound-deadening materials that strongly adhere to a variety of surfaces—these will last longer and get you more bang for your buck in the long run.

REMEMBER.

If you live in a warmer climate, try to avoid those that are sensitive to the heat, as they can loosen over time.

Lastly, choose ones that aren’t a pain to install. Easy peel and seal types are great options compared to those that require heat guns and other complicated tools for proper application.

Odor

Odor Icon

Depending on what your sound deadening mat is made of, funky odors can make their way into your car after installation.

Always test these products beforehand, especially if you’re sensitive to different smells. Generally, asphalt-based options have stronger scents, but some butyl-based ones aren’t odorless either.

Price

Price Icon

You should purchase a sound deadener that fits both your needs and your budget.

The best solution for you isn’t always the highest-priced item, especially if you’re only trying to fix a minor problem. However, with these products, quality does tend to increase with price.

With that said, the decision is ultimately up to you, so as long as you’re comfortable and happy with your choice, then it’s definitely the right one!

Final Verdict

Considering all of the information above, this is our verdict: The best sound deadening material is the Dynamat Self-Adhesive Sound Deadener, which is HIGHLY effective, durable, and high-quality.

Although it’s more expensive than others, Dynamat has been tried and tested by many consumers, and it performs consistently well under various circumstances and in different environments.

It’s also one of the most user-friendly products out there, so it’s suitable for beginners and professionals alike. We have an article dedicated to the best alternatives for Dynamat for a reason!

For us, this is truly a worthwhile investment to improve your driving experience.

If your budget doesn’t allow it, though, the Noico 80 Mil Sound Deadening Mat offers great value for money. This thick, practical, and functional option can provide full coverage for your car and get the job done at a low price!

What Now?

Now that you have the right sound deadening materials and the proper information on how to use them, you’ll definitely enjoy a smoother and more comfortable ride the next time you take your car out for a spin!

About the Author

andrea_adams

Andrea has always been bombarded by the hustle and bustle outside her home. Living in the city doesn’t get any quieter. The never ending noise from construction, traffic, and dogs barking on the streets day in and day out drove Andrea to a breaking point.

For 3 years, Andrea committed herself to studying DIY hacks, performing soundproofing experiments, and installing noise-free solutions. Now, she lives a quiet life free of the stress from noisy environments.

She hopes to share this knowledge so that others don’t have to endure the noise reigning in their ears and live a peaceful, stress-free life.