What is Sound Deadening Foam? The Benefits of this Best Selling Car Accessory

  • Post comments:0 Comments
  • Reading time:6 mins read


If you’ve ever spent time in a car with a complicated sound system, you’re probably familiar with the term “sound deadening foam.” If you’re not, though, that’s okay. The name is pretty self-explanatory: it’s foam that helps to dampen noise and create a better audio experience. But what exactly does this mean? How does it work? And is it really worth investing in sound deadening foam for your car? Let’s answer those questions and more so that you can make an informed decision about how to improve the sound in your vehicle.

What is Sound Deadening Foam?

Sound deadening foam is a type of soundproofing material. It is used to reduce the amount of noise that your car produces. Sound deadening foam is made out of a soft, flexible material with air pockets in it. Sound waves bounce off these air pockets and make the sound bounce around inside your vehicle, which effectively absorbs it and reduces the amount that you can hear it outside your vehicle. This technology is commonly used in vehicles to help keep road noise at bay while driving on loud streets like downtown Los Angeles or New York City where there are tons of cars competing for space on their roads during rush hour traffic.

Sound deadening foam has many applications outside just being used as an automotive accessory; however most people do not know what this product really does for them until they drive around town listening closely for any unwanted noises coming from their engine compartment or cabin area within their vehicle rather than focusing more on other things going on around them such as talking with friends over coffee at Starbucks every morning before work starts up again after lunchtime break ends (this example given just because I love Starbuck’s so much) but anyways back onto topic here…

The Benefits of Sound Deadening Foam

If you’re not familiar with sound deadening foam, it’s a type of insulation that improves the acoustics in your car. It has a number of benefits that make it well worth the investment:

  • Reduces road noise
  • Reduces interior noise
  • Improves sound quality
  • Increases bass response and quality of stereo imaging (clarity)

Comparing Materials and Their Effectiveness (Sound Transmission Class)

The best way to understand the effectiveness of sound deadening materials is to compare them.

Sound transmission class (STC) is a measure of how well a material will block sounds from passing through it. This is an important metric when selecting a sound barrier because you want to reduce the amount of noise that passes through your vehicle, not just cover it up with more noise. While STC measures one aspect of sound absorption, it doesn’t tell you anything about other factors like noise control or resonance absorption that can be equally important for achieving effective results.

The NRC rating was created as an alternative measurement for determining how much sound energy is reflected by certain materials each time they are subjected to vibrations in different frequencies and intensities. The NRC stands for “noise reduction coefficient” and provides similar information as STC but uses different testing methods which provides more detailed information about how effective different products are in reducing unwanted noises inside vehicles such as road bumps, engine hums and wind whistles at various points within your car’s cabin area; this metric isn’t just limited solely towards insulating products either – some manufacturers also use this rating standard across several other categories such as carpeting too!

What Does STC Ranking Mean?

Sound Transmission Class is a rating system for how well a material controls sound. This rating is measured by the decibel level that you can hear through the material—the higher the STC rating, the more sound it absorbs.

This test also measures how well a material transmits sound rather than absorbing it. A lower STC rating means that less sound will pass through your car’s floorboards and walls to reach your ears inside your cabin.

The Best Materials to Reduce Noise in Cars

Sound deadening foam is a high-quality material that will reduce noise in vehicles. This can be applied to the floor of your car, pillars, doors, even the roof! There are many types of sound deadening foam but we only sell top quality products.

  • High density foam: This type of foam is stiffer than low density and provides more insulation against outside noises. It’s also called “thermal” or “heat” insulation because it’s good at blocking sounds that are transmitted through heat conductivity (not just sound waves). The reason why this kind of material works so well is because it has a very low density — meaning there’s not much air between layers so energy transfer won’t happen as easily (or at all).
  • Low density foam: This type of sound damping material doesn’t provide as much protection against loud noises because there is more air between layers which makes it easier for sounds to pass through them rather than get absorbed by them like high density does.”

Sound deadening foam can make a big difference in your car’s audio quality without breaking the bank.

Sound deadening foam is a type of insulation that can be used to reduce noise from the road, engine, exhaust, tires and wind.

Sound deadening products are sold as kits or individual pieces. Kits can contain everything you need for your sound-deadening project in one convenient package. Individual pieces are ideal for those who want to customize their car audio system in order to make it more comfortable or improve its performance on the road.


As you can see, there are many benefits to using sound deadening foam. However, if your main concern is safety on the road, then this may not be the best option for you. If you’re looking for ways to reduce noise inside the car so that passengers don’t have to shout over engine noises or other external sounds like sirens and horns, then sound deadening foam can help with that too!

Leave a Reply