How to use insulation to sound proof a car

Written by robert russell
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How to use insulation to sound proof a car
(Dynamic Graphics Group/Dynamic Graphics Group/Getty Images)

Soundproofing your vehicle is similar to soundproofing your home or an indoor space. Identify the troublesome spots and find the appropriate soundproofing materials for the job. A number of auto soundproofing materials are available for insulating your vehicle. Soundproofing a car or truck makes for a much more comfortable ride. It makes it possible to listen to your favourite tunes as you drive down the road or to enjoy peace and quiet as you take in the sights.

Skill level:

Things you need

  • Auto soundproofing material
  • Measuring tape
  • Contact adhesive glue
  • Utility knife
  • Scissors

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  1. 1

    Determine the soundproofing needs for your vehicle. Blocking or deadening engine noise is the primary goal in soundproofing a vehicle but you may have additional sound problems to deal with as well.

  2. 2

    Research the various types of soundproofing materials available. Visit an auto parts store and do research online as well. Soundproofing materials for cars and trucks can be divided into three categories -- bonnet and boot insulation materials, which may be some type of matting or combination of foam rubber and cloth; noise barriers, made from multiple layers of compressed cotton or a similar material; anti vibrating material, which is glued to panels to stop panel vibrations and to reduce low resonance road noises.

  3. 3

    Open the bonnet of your vehicle. Clean the underside of the bonnet with an all purpose cleaner to remove dirt and grime. Measure the width and length of the bonnet and cut your bonnet lining material into two strips. Apply an adhesive to the bonnet and to the bonnet liner. Attach the bonnet liner to the bonnet and allow the adhesive to dry for the recommended period of time. The same procedure may be used for the boot as well.

  4. 4

    Mount the noise barrier insulation inside the car interior. The noise barrier material attaches to the firewall underneath the carpet of the car with a contact adhesive. sells several different versions of flexible foam floor barriers that sit underneath the carpet on the floor of the car and in the boot as well that blocks low frequency road noises.

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