DIY Car Soundproofing

How can you easily make car rides more comfortable? Car soundproofing.

During an average car ride, we’re hit with a virtual torrent of sound. Quickly, picture your car inside your head. Now picture the sound waves entering the vehicle, from both outside and inside of the car (engine noise, headlight noise, etc).

In the average car, these sound waves have very little stopping them from hitting you at full force. They penetrate the doors relatively easily, ensuring you hear most noises at full volume.

I’m sure you’ve had this issue before – when drying on a freeway, you have to raise your voice to be heard. Music needs to be turned up higher than normal to get the same effect (bad for hearing and sound quality). Long drives can cause severe headaches, exhaustion and irritation.

All these issues can be solved (or dramatically improved) by strategically adding car sound deadening materials.

How it Works

Picture the ocean of sound assaulting your vehicle, unhampered. Now, let’s place some noise klling materials in sound “hot spots.” Where before there was nothing stopping the sound from entering at full force, now we have dampening materials which act like sponges.

As the sound hits the vehicle, it is slowed or absorbed by the sound deadener materials. Not all sound gets through, and the sound that does is dramatically minimized. It’s very similar to the ear plug effect – you can still hear external noises, but that are dramatically reduced.

The immediate benefit of this is a much smoother and more comfortable ride.

How is it Done? 

Soundproofing is—hands down—the easiest and most affordable way to bump up the level of comfort in your car. And, since most of us use our cars every day, a boost in comfort goes a long way – especially when it’s a major boost.

So how is it done? Fortunately, it’s very easy to install soundproofing materials.

For starters, avoid buying materials at large retail stores. In the event they sell sound deadening materials, they are generally much lower quality, designed by companies who do soundproofing as an afterthought.

Quality is KING in car soundproofing. Remember the sponge analogy – the more effective the sponge, the more sound is dampened. Additionally, you’ll probably want a soundproofing kit that accomplishes a lot with very little.

In other words, you don’t want to attach massive pieces of foam to your car. You want something subtle that’s unnoticeable… until you turn the engine on!

You’ll want a custom kit that does more with less. Here at STP Atlantic, we create military-grade soundproofing kits. Originally developed for submarines in the Russian military, our materials provide you with the absolute best dampening without being invasive or dramatically changing how your interior looks.

So that’s an option you might be interested in.

Once you have your kit, the next step is installation. Although the word “installation” can sound like a lot of work, fortunately, installing sound deadener kits is relatively painless.

With some sound insulation kits, you have to buy glue and manually glue them in. Ours come with self-adhesive backs, so the process is much quicker, and it’s easier to do a good job without making any mess whatsoever.

Where to Start Car Soundproofing

The best way to soundproof your car is to identify sonic “hot spots” – areas where loud sound passes through most easily. Here are four common areas:

1)  Doors

2)  Wheel-wells

3)  Car floor

4)  Firewall (behind the dashboard)

By applying sound dampening materials to these four areas, you will experience a notable difference in noise, and it’s relatively easy to install.


With soundproofing, you can run into diminishing returns. Essentially, there’s only so much noise you can block. At a certain point, you have to buy exponentially more sound deadening materials and spend more time to get very minimal results.

By sticking to these “hot spots,” you can get the most amount of sound dampening for the least amount of work. Efficient, quick and easy! 

Our soundproofing products