Soundproofing Solutions for Walls, Windows and Curtains

How to Reduce Noise in Car Interior

A particularly negative aspect of driving is the amount of noise you often have to endure while doing so. Unwanted noise from tire hums, the wind, the car’s exhaust and engine, as well as rumbles and rattles from other areas all constantly disturbing and plaguing you with discomfort.

When driving an older model car, you are assured of constant discomfort and stress from the noise you hear, which often makes it impossible to speak or hold conversations at a normal volume, as well as impossible or extremely difficult to jam to your stereo playing. Additionally, the faster you drive you often find the louder the wind noise gets, and the more fatigued and irritable you become. However, in light of the aforementioned problems, this article serves to show you ways on how to reduce noise in car interior or the cabin of your car.

 

On that note, you should know that reducing the noise in your car by quieting the engine rumbles and wind noise is no small feat, rather a very difficult and time-consuming exercise. Whereby, you would have to work on various areas of your car, in order to get truly favourable results. In light of that, highlighted below are the best ways you can reduce your cabin noise.

Ways to Reduce Noise in Car Interior

  1. Make Use of Vibration Dampeners

We all know that a way in which sound travels is through vibrations, which gives rise to structural sounds. We also know that metal surfaces easily carry vibrations, hence, they act as sound amplifiers. Now, a car interior is filled with a lot of metal surfaces, like the floor pan and the roof, it is only natural that structural-borne noise will come from all the metal panels your car’s cabin has.

In light of that, one of the best ways to quiet down the noise in your car’s cabin is to install sound-deadening materials like vibration dampeners. Vibration dampeners work by absorbing and reducing sound vibrations, as well as removing resonance and excessive sounds. You should note that vibration dampeners can be any type of material basically, as long as it has the right amount of mass that will allow it to reduce sound vibrations. Simply put, the material should be very thick.

However, you can simply settle for the most used form of vibration dampeners, which is Butyl rubber mats bonded to an aluminium alloy[1] skin. There are also vibration dampeners that are made with tar and adhesive backing, that you can try.

  1. Sound Blocking and Sound Absorbing

Apart from vibration dampeners, other forms or ways of making use of sound-deadening materials is by sound blocking and absorbing. In regards to sound blocking, sound blockers are simply barriers for airborne sounds, whereby, you can make use of mass loaded vinyl (MLV), hard rubber or heavy thick foams to quiet the noise within your car’s interior.

Also, you should note that mass loaded vinyl is a top-quality noise reduction material that substantially reduces the noise level inside your car. It’s worthy to note that any sound deadening material to be used effectively against airborne sound has to be heavy and dense, leaving no gaps for sound to travel within the barrier.

With that in mind, the next aspect is sound absorbing and as the name suggests, it is simply absorbing the airborne sound waves in the interior of your car, as well as cutting medium to higher frequencies and reducing echoes. A great example of a sound deadening material to use here is an open-cell foam, which is great for absorbing sound waves.

  1. Handle the Engine and Exhaust

This one is pretty simple to carry out and doesn’t require too much to be done. For your engines, what you need to do is soundproof the hood of your car, since that’s where the engine resides. Now, if your engine is contributing to your noise problems, there’s probably a reason for that which can be fixed.

However, as your car ages, the engines undoubtedly gets noisier, so if your car is old and your engines are loud even while driving, you should soundproof the hood. In light of that, you can soundproof the hood of the car by simply lining the underside of the hood with a vibration dampener. With regards to a loud exhaust that starts screaming whenever you rev the car, you need to muffle the exhaust, by simply attaching a muffler to it.

 

Apart from the methods given above to reduce the noise in the cabin of a car, other methods include:

  1. Reinforcing your car window.
  2. Getting a car door edge seal protector.
  3. Soundproofing your car door.
  4. Adding insulation to the roof of the car.
  5. Under rating your car.
  6. Getting a louder stereo.

Conclusion

If you want to reduce the noise levels of the interior of your car, then you need to be fully prepared especially if you want the best results possible. This is because as earlier said, soundproofing or reducing the noise in the cabin of your car is no small task.

On that note, to get the best results you should try the methods above and go through the entire process of it with the right sound-deadening materials, and with little mind to cost. Furthermore, it is advisable to focus on reducing the structural sounds or structural borne sounds in the cabin of your car, as it is a large per cent of what gives rise to unwanted noise in the interior of your car.

Glossary

[1] Aluminium Alloy – Link