In this article, we will analyze what sound insulation is and what it is eaten with. And we will also understand how to properly make noise insulation with our own hands.
Car soundproofing is a process designed to reduce the level of ambient noise in a car. Soundproofing is one of the necessary steps when tuning a car. In addition to comfort, the treatment of the car with noise-insulating materials imparts anti-corrosion properties. You can make a slight noise insulation in the car, or you can do it in full. It all depends on the purpose for which you are doing it.
Before we do soundproofing of a car, let's understand the sources of noise. They can be conditionally divided into two groups:
- External sources - the noise from the wheels, the noise from the air flow, and in general, all the extraneous noises coming from the street.
- Internal sources are engine noise, transmission noise, creak of various interior trim elements.
Now let's decide on the goal, why is it worth making a car soundproofing with your own hands? Of course, the main goal is the comfort of the driver and passengers. What are the specific advantages of complete car soundproofing?
- Reducing road noise
- Elimination of squeaks of interior elements
- Reducing noise from the motor
- Improving the sound of the speaker system
- Interior thermal insulation
Depending on these tasks, different parts of the car are processed using different materials.
Machine noise insulation materials
Various materials are used for car sound insulation, which differ in both acoustic and physical properties. Of these, the following types are distinguished:
- Vibration damping
- Sound absorbing
- Heat and sound insulating
Material of different thickness and texture is used to process different parts of the car.
For example, for soundproofing the floor, trunk, wheel arches, engine compartment partition, central tunnel, a thicker vibration-insulating material is used: Visomat PB-2, Vibroplast M2, BiMast Super, Visomat MP, or BiMast Bomb.
For noise insulation of doors: Vibroplast M2 or Visomat MP.
On the floor, on top of a heavy vibration-damping material, fine-pored sound-heat insulation is applied: Vibroton or Splen.
For soundproofing the roof of the car, Vibroplast M1 or Bitoplast is used.
For processing the plastic parts of the passenger compartment, Bitoplast or Madeleine sealing material is used. In this case, you should completely disassemble the dashboard, lay the joints with strips 10-15mm wide.
To achieve a good effect of noise and vibration isolation of the engine compartment, it is recommended to glue the following materials on the bulkhead of the engine compartment from the passenger compartment:
- the first layer Vibroplast M2;
- the second layer of Splen;
- the third layer Visomat PB-2.
Isoton LM material is used to insulate the hood.
To achieve a good result, 50–70% of the total insulated surface must be treated with vibration-absorbing materials. It is impossible to make a car absolutely silent, with optimal use of materials it is possible to achieve a noise reduction of 3-4 dB, which is considered a fairly good result. When deciding on the need for soundproofing a car (with your own hands), it should be borne in mind that malfunctions of its components and assemblies (engine, transmission, suspension, etc.) can be the cause of various noises. After the necessary repairs, the level of acoustic comfort may be quite satisfactory.
How much material is needed for DIY soundproofing? More details on what, where and how much:
For noise insulation of doors, roof, trunk, hood and floor, it is necessary to use vibration-absorbing materials (Vibroplast, Bimast, Visomat). The minimum consumption is 6m2 (15 sheets of size 0, 53x0, 75m).
For soundproofing the wheel arches and the engine compartment partition, on top of the layer of vibration-damping materials, it is necessary to process it with heat and sound insulating material (SPLEN). The minimum consumption is 2.5 m2 (2 sheets of 1x1, 25m).
For soundproofing the floor and trunk on top of the layer of vibration-absorbing material, it is necessary to make the treatment with heat and sound-insulating materials (Izolon PPE, Stizol, SPLEN). The minimum consumption is 4 m2 (3 sheets of 1x1, 25m).
For soundproofing the roof with your own hands, after installing Vibroplast, it is necessary to carry out processing with Bitoplast-10 sealing material. Approximate consumption -1-2 m2 (1 sheet size 1x2m).
For soundproofing the hood, trunk and engine side flap on top of a layer of vibration-absorbing material on top of a layer of vibration-absorbing material, it is necessary to process with a heat and sound absorber (Isoton B, Isoton -LM). The optimum material consumption for the hood lid is 1-2 m2 (1 sheet of 1x2m).
For noise insulation of plastic parts, a sealing material is used - Bitoplast-5 or Madeleine. Approximate consumption -0, 5-1 m2 (1 sheet size 1x1, 75m).