What is the best sound deadening material for your car?

Sound leaking out of your car can cause a lot of troubles. You might find that the sound in your cabin is leaking out, which can make great speakers sound poor. Maybe you like to turn the volume way up, but your neighbors don’t appreciate it.

It’s even possible that a good subwoofer might start rattling parts of your car, which can lead to some serious damage.

Whatever your reason is, there are plenty of sound deadening materials out there for you.  Lets take a look at four of the most common types of sound deadening materials.

Dynamat

dynamat

Dynamat

Easily the most famous sound deadening material, Dynamat works hard to earn it’s renown. Of course, this fame fetches a fairly high price.

But is it worth it? Absolutely. Dynamat practically invented aluminum-front butyl-back sound deadening, and they’ve continued to innovate. Dynamat has no smell, and keeps heat away. Additionally, it will reduce even the loudest engine noises to practically zero while increasing bass response in the cabin of your car.

Dynamat is now working to make things easier for you. They’ve begun selling different kits that allow you to quickly install Dynamat in any part of your car. The doors? There’s a kit. The trunk? There’s a kit. The hood, the headliner? Kit and kit.

And even if you don’t cover your entire car, you will see serious results from Dynamat. 30% coverage will reduce sound by about 25%, while full coverage will cut sound by 50-75%.

Pros

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    Heat resistant
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    Odorless
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    Excellent sound deadening
  • Increases bass response

Cons

  • Quite pricey

While it demands a fairly high price tag, that’s for good reason. Dynamat does a great job of keeping your sound in your car, and making sure that nothing goes wrong in the process.

FatMat

FatMat

If Dynamat is the Coca-Cola of sound deadening, FatMat is the Pepsi. FatMat nearly rivals Dynamat in fame and in quality.

While it’s not quite as good at it’s job as Dynamat is, it comes with a much lower price tag. One roll of FatMat will cover almost any car. Additionally - the thing that sets FatMat on top for many users - FatMat is made with a self-adhesive, which makes installation no more difficult than using a piece of Scotch tape.

One thing that does take away from FatMat is the small amount of asphalt it uses in it’s mixture. As we’ll discuss more later, asphalt has been shown to cause some serious health problems. However, there is not a large enough amount of asphalt in FatMat to be a serious concern.

Pros

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    Self adhesive
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    Good sound deadening
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    Material is difficult to cut

Cons

  • Some asphalt in mix

If ease of use is important to you, than there is no better choice than FatMat. It’s not quite as good as DynaMat, but you’re not missing out on much. And while it can be annoying to cut, you can’t beat the self-adhesion that FatMat offers.

Hushmat

Hushmat

There are two kinds of sound that can cause trouble in a car: the speaker, and the car itself. If you’re dealing with road noise, Hushmat was made for you.

While other materials may focus on road noise, Hushmat focuses solely on it. Hushmat could probably make a monster truck run quietly. In addition to this, Husmat is built with an incredible heat resistance. If you live in an area with regular extreme high temperatures, you might want to consider Hushmat even if you are looking for music sound deadening and not road noise deadening. It’s important to note, however, that a single Hushmat roll will only cover about half of your average interior.

Hushmat is high-density, as well, meaning that it’s thinner layers still do about as much work as other products. And a lack of plastic or asphalt filler in Hushmat means that no odor rises as the temperature does. This shouldn’t be understated - nothing is worse than a car that smells like burning plastic.

Pros

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    Great road noise deadening
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    Great heat resistance

Cons

  • Small roll size

Hushmat is the best at what it does: Hushmat stops road noise. And it does it at extreme temperatures. However, the small roll size of Hushmat can run up your budget in a flash.

Peel & Seal

Peel & Seal

Peel & Seal is a budget alternative for sound deadening materials, but (as most things with a budget do) Peel & Seal comes with some issues. However, let’s start with the good. Peel & Seal keeps sound out well, and the installation isn’t too difficult. For the price point, it does a better job than you might think. It’s solidly built, and can severely lessen road noise and sound leakage. Peel & Seal packs a punch, but you will always get what you pay for.

Where Peel & Seal unfortunately loses a lot of points is in it’s mixture. Much like FatMat, Peel & Seal is made with asphalt. Unlike FatMat, though, Peel & Seal is comprised mostly of asphalt. This can make Peel & Seal more toxic than it might be worth.

Asphalt is a known carcinogen, and can cause serious health issues. These include (but are not limited to): headache, skin rash, sensitization, throat and eye irritation, cough, and skin cancer. Of course, if you ever stepped on a black top in August, you also know that asphalt doesn’t do well in the heat, either.

Pros

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    Good sound quality
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    Good bang for your buck

Cons

  • Asphalt causes a myriad of issues

Peel & Seal, despite some flaws, is good at what it does - and it does it for cheap. If health is a major concern you might want to look elsewhere, but asphalt isn’t a leading cause of death. Peel & Seal is great for your budget and your car, even if it’s not so great for your skin.

In Conclusion

With a wide variety on the market, finding the best sound deadening material isn’t easy. However, there is always a material out there for your needs. As long as you know why you need sound deadening material, finding the right one takes relatively little work. So, whatever your needs are, it’s time to get insulating.

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