Things You Should Know About Sound Deadening Spray for Cars

Comfort inside a car may be affected by many things. Great interior fittings and a well-chosen car audio system promise good times when driving short and long distances. But even with these, noise from outside can deny you the enjoyment you deserve after investing heavily in the car’s interior. When there is noise from sources such as wind, screeching tires and your car’s running engine, the car’s interior comfort is compromised.

You can apply various noise-reduction strategies to preserve the tranquility of your car’s interior. Sound deadening sprays for cars are among the best ways to reduce transmission of noise into the car. Using sound reduction spays is becoming increasingly popular as an effective and less expensive sound insulation approach for cars. This article presents everything you need to know about these sprays – from what they are to tips on how to choose the best sound deadening spray for cars.

What is sound deadening spray?

A sound deadening spray is a product sprayed into flat and curved parts of a car to give an even application of sound insulation. It is the most effective way of sound insulation especially for the hard-to-reach places or gaps left after installing sound deadening mats. The sound deadening material usually comes in easy-to-use aerosol cans or in professional cans that use air compressor-powered spray guns.

Spray sound deadener can be used alone to treat the entire cabin. However, most people use them together with other sound deadening materials such as mats.

Sound dampening sprays are easy to use. After you have cleaned the surface and prepped it, you apply the spray like you’d do when applying any paint. You’ll need a just day to apply 2-inch thick sound deadener over a surface of about 45 square feet. The process of applying sound deadening sprays for cars is explained shortly below.

What is sound deadening spray made of?

Most sound proofing spray-on products use sound dampening particles mixed with a binding solution. The mixture creates a substance that is viable to coat various parts of a vehicle including the noisiest parts like the engine.

The majority of sound dampening sprays for cars on the market are made of mass loaded vinyl sheets or materials identical to it. This material is great for absorbing sound and it is also heat resistant. How effective it is in reducing transmission of sound into the car depends of how many layers of the material you spray.

Sound Deadening Spray vs. Mats: Which is more effective?

Sound deadening mats have been in use for a longer time than sprays. They are great for larger areas of the car such as the floor and ceiling. However, spray sound deadeners are a better solution for insulating small and hard to reach places. The engine compartment and doors have small nooks and crevices in which it is extremely difficult to place mats. Sprays come in handy as they can cover even the weirdest angles or corners.

If you have ever installed sound deadening mats, you have an idea of how challenging and time consuming the process can be. The biggest advantage, therefore, of using sound deadening sprays over mats is ease of installation. You can use sprays even if you don’t have any skills or experience with motor vehicle sound deadening.

Can you still use sound dampening spray with sound deadening mats already installed?

If you have installed or plan to place other sound deadening materials in your car, having a spray sound dampener at hand will help to complete the work. It will fill all the gaps left between other types of sound dampening material to give you a fully soundproof car interior.

How does sound deadening spray work?

Sound deadening sprays use the simple principle of Physics of production of sound waves. When objects vibrate they produce waves. These waves set the air in the surrounding environment into motion as they travel from one point to another.  Sound is produced in the process.

When the sprayed material dries, it absorbs the sound waves thus making them disappear to eliminate the noise. That’s how the material blocks sound transmission into the car’s interior. Studies have shown that liquid sound deadeners can block all sound frequencies completely.

Steps to follow when using sound deadening spray for cars

Spraying sound deadener into your car in incredibly easy once you understand the supplies you need and the steps you should take. Note that the spray can get a bit messy if it goes to unintended places. The following steps should help you to insulate your car with sound deadening material without encountering any issues:

Step one:  Preparing the car

Whether you are intending to install sound dampening mats, spray, or any other material, you will need to get to the car’s bare metal under the hood, on the roof, and in the trunk. It has to be free of dirt and rust for the sound deadening material to be effective and last the longest time possible.

Sand off any rust from the entire surface you are going to spray with sound deadener. Make sure there is no rust left on the metal as the spray will waterproof the car. Waterproofing rusted metal can be damaging to the car. Should there be more rust damage, you may need to treat the metal with a rust encapsulator. After you have sanded the surface, clean it off using a dry cloth.

Step two: Gathering tools and safety materials

Take care of your safety first. Consider wearing clothing that you don’t care so much if they get stained. Also wear gloves, a hat, and face mask to ensure that the spray doesn’t get on your skin.

You need certain supplies to get into business. Sound deadening spray companies sell full kits with a spray nozzle, a mixing drill tip, a canister, and a wet mill gauge. For some types of sprays, you need to get a mixer and spray gun. Before spraying the liquid sound deadener, you need to mix it first. Plug in the mixing drill, put it in reverse, and slowly mix the contents for a few minutes.

Step three: Applying the sound dampener

You have less work if you are using a pressurized canned spray. Hold the can at least eight inches from the surface you are soundproofing and evenly spray the liquid sound dampener. Wait for about 20 minutes for the material to dry and then reapply. Three layers of the material should provide adequate width of sound dampening material for complete sound insulation. If you are using products like Lizard Skin, plug in the spray gun and start spraying.

The wet mil gauge is used to check the depth of the liquid sound dampener. If you don’t have one you can use a wire and approximate the depth. Each layer should be about 20 mm thick.

Step four: Re-assembling

Once the spray is completely dry, you can start putting everything back into their place. How long you take to complete this step depends on how many items you had taken out during the preparation stage.

Benefits of using sound deadening spray for cars

  • Spraying sound dampener is the best way to insulate areas that are too hidden or tiny to install a mat. The spray can penetrate even the most hidden areas.
  • Sprays are perfect for areas where you don’t want to add too much weight, such as on door panels.
  • Installing sound deadening mats to cover corners and rough edges can be very strenuous. Sprays save you all the trouble and allow you to sound proof every single part of the car.
  • You don’t need to cut anything when using spray sound dampeners. This is unlike when using mats where you have to cut and position the mats in the most effective way.
  • A spray will allow you to completely and evenly cover the entire interior surface of the car in a matter of hours.
  • Sound dampening sprays have been proven to protect a vehicle from rust, salt, and corrosion in addition to reducing noise and vibrations.

Disadvantages of using sound dampening sprays for cars

  • Spray-on sound deadeners are designed for short-term use. This means you should consider using other materials if you want a lasting sound proofing solution for your car.
  • Some spray sound dampeners have a rubbery smell that most users find unpleasant.
  • Some cheap alternatives of sound deadening sprays for cars crack and chip after drying. This chipping and cracking significantly reduces the effectiveness of the sound deadener.

Choosing the right sound deadening spray

When searching for a spray-on sound dampening product, consider low-density material. Such material will allow maximum sound absorption and offer complete sound deadening.

Another key consideration when choosing sound dampening spray for cars is how environmentally friendly the material is. Choose a product with low emission of volatile organic compounds. Selecting products certified for low VOCs emissions ensures that you enjoy a healthy in-car environment.

Also check additional properties of the sound deadening material. There are some spray sound deadeners that also help to insulate the vehicle against radiant heat. Finding a sound deadener that also functions as a heat insulator is both economical and convenient for those looking for the most affordable insulation solutions for their cars.

Finally, look for a spray-on sound dampener that is versatile in terms of application to various parts and surfaces. High-quality and long-lasting sound deadening sprays for cars can be used on a wide variety of vehicles.

Every driver wants to enjoy quality audio while driving around. Using a sound deadening spray ensures takes away the worries of disturbing noises from outside. High-quality spray-on sound dampeners completely ground any sounds and vibrations whether from you vehicle, other vehicles, or the surrounding environment. With knowledge of the benefits of these sprays, how to apply, and how to choose the best type, you are now a step closer to enjoying your drives without having to put up with annoying noises.

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