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 cramp your enjoyment. The car’s interior comfort is compromised when there is noise from sources such as wind, screeching tires, and your car’s running engine. Enter sound-deadening spray.

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 noise transmission into the car. Using sound reduction spays is becoming increasingly popular as an effective and less expensive car insulation approach. This article presents everything you need to know about these sprays – from what they are to tips on choosing 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 sound insulation an even application. It is the most effective way to install 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 the professional form that uses air compressor-powered spray guns.

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

Sound dampening sprays are easy to use. After you have cleaned the surface and prepped it, apply the spray like you’d do when applying any paint. You’ll need a just day to apply a 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.

sound deadening in car interior

What is Sound Deadening Spray Made Of?

Most soundproofing spray-on products use sound dampening particles mixed with a binding solution. The mixture creates a substance that can coat various vehicle parts, including the noisiest parts like the engine.

Most 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 is heat resistant. How effectively it reduces the transmission of sound into the car depends on 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 car areas, such as the floor and ceiling. However, spray sound deadeners are better for insulating small and hard-to-reach places. The engine compartment and doors have small nooks and crevices, making it extremely difficult to place mats. Sprays are handy as they can cover even the weirdest angles or corners.

If you have ever installed sound-deadening mats, you know how challenging and time-consuming the process can be. Therefore, the biggest advantage of using sound-deadening sprays over mats is the ease of installation. You can use sprays even if you don’t have any skills or experience with motor vehicle sound deadening. We like that!

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 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. We love the belt and suspenders approach.

How Does Sound Deadening Spray Work?

Sound deadening sprays use simple principles of physics related to 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 is incredibly easy once you understand the supplies you need and the steps you should take. Note that the spray can get 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 intend 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 possible.

Sand off any rust from the entire surface you will spray with sound deadener. Ensure there is no rust left on the metal, as the spray will waterproof the car. Waterproofing rusted metal can be damaging to the car. You may need to treat the metal with a rust encapsulator if there is more rust damage. 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. Wear gloves, a hat, and a face mask to ensure the spray doesn’t get on your skin or lungs.

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 mil gauge. You need to get a mixer and spray gun for some types of sprays. 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’ll 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 about 20 minutes for the material to dry, then reapply. Three layers of the material should provide adequate width of sound-dampening material for complete sound insulation. If you use 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 to approximate the depth. Each layer should be about 20 mm thick.

Step four: Re-assembling

Once the spray is completely dry, you can put everything back in place. How long you 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 too hidden or tiny to install a mat. The spray can penetrate even the most stubborn 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 soundproof every 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 most effectively.
  • A spray will allow you to completely and evenly cover the entire interior surface of the car in hours.
  • Sound dampening sprays have been proven to protect a vehicle from rust, salt, and corrosion and reduce 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 soundproofing solution for your car.
  • Some spray sound dampeners have a rubbery smell that many users find unpleasant.
  • Some cheap versions of sound-deadening sprays for cars crack and chip after drying. This chipping and cracking significantly reduce 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. Some spray sound deadeners also help to insulate the vehicle against radiant heat. Finding a sound deadener that also functions as a heat insulator is economical and convenient for those looking for the most affordable insulation solutions for their cars.

Finally, look for a versatile spray-on sound dampener 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 significantly reduces annoying or distracting noises from outside. High-quality spray-on sound dampeners completely ground any sounds and vibrations from your vehicle, other vehicles, or the surrounding environment.