How to soundproof a VAZ 2112 with your own hands

Articles

2 Let's start with the hood
2.1 Let's move on to the motor shield

3 We process the roof

4 Soundproof the bottom

5 Door noise

5.1 First layer

6 Quantity and types of materials

Sound insulation of the trunk of a VAZ 2112 is carried out together with the bottom

Applying soundproofing to your car is not so much an achievement of comfort as it is an urgent necessity. In all interiors of domestic cars there is no sound insulation, and even if there is some, it still lets in extraneous sounds. Therefore, you have to eliminate such a deficiency with your own hands.

What is it for?

Soundproofing today is needed not only by lovers of good music:

Extraneous noise in the cabin interferes with normal conversation
In addition, noise has an irritating effect on the driver, reduces his reaction and thereby poses a threat to his life.
Spending a long time in a cabin with constant noise disrupts nervous activity, increases a person’s irritability, and impairs sleep.
Finally, loud noise constricts the blood vessels in the body, which increases the load on the heart and can cause angina over time.
You can’t buy health, so you need to take care right away
Soundproofing the VAZ 2112 itself will solve all problems
So that you don’t have to worry about time and money, it is recommended to do it in stages, starting with light areas that do not require disassembling the interior

Quantity and types of materials

The components used in sound insulation differ in characteristics, methods of their fastening and price:

The assortment today is wide, both in online stores and in auto parts stores.
Of these, Isoton and Accent are considered the most effective in sound absorption
For vibration absorption - Bimast and Vibroplast
Anti-squeak – Bitoplast and Madeline

On the bottom – 13 sheets of vibration damper + 13 sheets of sound insulator, dimensions 0.5 * 0.75 meters
On the roof - 4 sheets of vibration insulation + 4 sheets of sound insulation, dimensions 0.5 * 0.75 meters
VAZ 2112 trunk sound insulation – 10 sheets 0.3 m 2 – vibration + 0.8 m 2 sound insulation
On the door - 5 sheets of vibration insulation 0.5 * 0.75 meters + 0.8 m 2 sound insulation
Madeleine is applied in places, so 1 sheet is enough
Manufacturers, depending on the materials used, recommend treating surfaces in the following percentages:
60% vibroplast and 40% bimast or vice versa
However, many owners apply 100% of one material to all surfaces

Let's start with the hood

The hood cover and the engine compartment partition are the simplest areas where you can start and practice at the same time:

Vibration insulation is glued exclusively between the stiffeners

It reduces the noise level from the engine into the cabin, plus it provides thermal insulation, which the engine needs in winter
To achieve a noticeable effect, it must be carried out in conjunction with the treatment of the engine shield.
Competent sound insulation is carried out in three layers
The first layer is always a vibration damper, as the instructions say
The vibration damper must certainly have a foil layer to better reflect heat waves, because the temperature under the hood when the engine is running reaches a fairly high level
You apply the material on flat surfaces between the stiffening ribs, as in the photo above
The second layer is made of foil insulating material, for example, Splen
This second layer plays the role of thermal insulation and sound insulation; it covers the entire area, including stiffeners
The third layer is usually standard (factory, standard) sound insulation
We process the trunk lid in a similar way.

Let's move on to the engine shield

To make high-quality sound insulation of the engine panel in the cabin, you need to remove the dashboard:

Therefore, together with the hood, the outer side is processed, which does not require disassembly
Everything is the same, two layers of the same materials, and in the same sequence
And the procedure in the cabin is combined with soundproofing the dashboard
The first layer will also be a vibration-insulating material, Vibroplast or Bimast is ideal
A vibration damper should also be applied to all side surfaces, as well as technological holes, only a thinner one
The second layer involves gluing with noise-insulating material, here the entire surface is also covered with Accent (inside the cabin, Accent is more advantageous than Splen)
The thickness of the sound insulator is ten, or preferably fifteen centimeters
Experts recommend sealing the contact points between the dashboard and the panel body with 10 mm bitoplast to reduce squeaking, and in places where it does not fit, using a thinner anti-creaking material - Madeleine
Install factory sound insulation as the next layer, if there is any.
If standard sound insulation is unsuitable for further use, you can purchase a new one

Sound insulation of engine shield

To carry out high-quality sound insulation of the engine panel, it is necessary to remove the dashboard. For this reason, it is logical to combine the procedure with soundproofing the dashboard.

The first layer is applied vibration-proofing material. A vibration damper is ideal. A vibration damper is also applied to the side surfaces and technological holes, but in a thinner layer.

The second layer involves gluing with soundproofing material. The entire surface is covered with “Accent” with a thickness of 10 or 15 mm. Experts recommend sealing the contact points between the instrument panel and the body with 10 mm bitoplast to reduce squeaking.

After soundproofing, a third layer is laid - soundproofing. The front wheel arches are covered with 4 or 8 mm soundproofing material "Spleen".

The fourth layer is the installation of factory sound insulation. If the standard sound insulation continues to be unsuitable, purchase a new one and install it.

External sound insulation of the VAZ 2112 engine shield.

Treating the roof

The work of soundproofing a roof is the simplest and at the same time the least expensive:

Here, for high-quality sound insulation of the roof, it is enough to install only two layers
As always, the first layer is vibration insulation; you cover the entire flat surface of the roof with it.
Vizomat is recommended as a vibration-insulating material, two millimeters thick
The second layer is a noise-insulating layer from Accent
Bitoplast, with a thickness of 5 millimeters, or 10 millimeters, is applied to the ribs of cruelty, the entire flat surface is Accent, with a thickness of 10 millimeters. In the space under the handles and shades, it is sealed with Bitoplast 4 millimeters

Roof treated with vibration insulation

Quantity and types of materials for soundproofing the interior of the VAZ 2110.

Components for sound insulation differ in their characteristics, fastening methods and price categories. The assortment is widely represented both in online stores and in car showrooms. The most effective sound absorption materials are isotone and biplast. Isotone sound absorption coefficient: 0.4–0.94 arb. units, and biplast: 85%.

Approximate amount of material required for sound insulation:

For the floor - 13 sheets of vibration material + 13 sheets of sound insulation, measuring 0.5 m * 0.75.
For the roof - 4 sheets + 4 sheets of sound insulation, size 0.5 m * 0.75.
For the trunk of a VAZ 2111/2112 – 10 sheets (0.3m2) + 0.8m2 of sound insulation.
For doors - 5 sheets of vibration insulation (0.5 m * 0.75) + 0.8 m 2 sound insulation.

Manufacturers, depending on the materials used, recommend sheathing surfaces with a percentage ratio: 60% vibroplast to 40% bimast or vice versa. But many, when doing their own soundproofing, apply 100% of the material to the plane.

Soundproofing the bottom

When the VAZ 2112 is soundproofed, you will have to disassemble the interior yourself, remove all the rugs and seats:

In addition, remove the standard Shumka, if present
Only after complete disassembly of the interior, the laying of vibration insulation with Vizomat, Vibroplast, or Bimast Bomb (the price of which you like better) begins; you process the entire flat surface of the tunnel, and the bottom
When installing vibration-absorbing material, it is important to stick it tightly and roll it tightly to remove bubbles

Soundproofing the bottom of the cabin

An Accent or Isoton sound absorber is laid on top of it
The thickness of the soundproofing material for the bottom is required at least 10 millimeters
A 10 mm layer of Bitoplast is recommended for noise insulation of a tunnel.
An 8-mm-thick accent is applied to the trunk, including the niche for the spare wheel.
Install standard sound insulation as the third layer
It is recommended to treat the outside of the bottom with “liquid” Shumka, and it is also used to treat the outside of the wheel arches
It is easy to apply and convenient for treating difficult areas, plus it is durable and protects against corrosion.
It is much lighter than sheet insulation, which is important
Can be applied faster using a sprayer

Soundproofing of floors

After disassembling the interior, vibration isolation is installed. Bimast Bomb or Visomat is used to treat the flat surface of the floor and tunnel. When installing vibration-absorbing material on the floor, it is important to seal the vibration dampers.

Noise insulation from the floor of a VAZ 2112 car.

The second layer is sound insulation. For the floor you can use Accenta or Isoton. The thickness of soundproofing materials for the floor must be at least 10 mm. To soundproof the tunnel, 10 mm Bitoplast is used. Splen 8 mm thick is used to soundproof the trunk - the spare wheel niche is treated.

The third layer is the installation of standard sound insulation.

Soundproofing the interior of a VAZ 2110,2112,2111 with your own hands is a broad question. The article describes how to soundproof the floor, doors, ceiling and trunk. The process itself takes no more than three weeks (if you work independently). To get started, you need to purchase materials and prepare tools.

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Components for soundproofing the interior of the VAZ 2110:

solvent – degreasing liquid: White Spirit;

sound-proofing materials: vibration-, sound-absorbing; heat-, sound-proof and anti-squeak;
in the absence of vibration-absorbing material, mastic (liquid metal or vibroplast) is applied using a spatula;
bolts and screws of longer sizes (after sound insulation the surface rises);
clips for attaching the ceiling area (the old ones are unusable after removal);
industrial hair dryer (heats the material and attaches it to the metal in this way);

Door noise

First, the door trim is removed (this operation is the same for all doors):

Then soundproofing materials are installed, first the surfaces are treated with a degreaser (alcohol or acetone)
An exception will be the lower part of the door, where an anti-corrosion coating is applied.
Sound insulation will also be made of several layers

First layer

The vibration isolator is glued to the inner surface of the outer side (panel) of the car door:

For convenience, it is better to cut it into pieces in advance.
The material is inserted through technological holes in the inner lining, having previously been heated with a hairdryer for better fastening.
Lay it overlapping
The more area you cover, the better.
To eliminate air bubbles, roll out the material with a hard roller or the handle of a screwdriver.

Doors treated with the first layer - vibration insulation

Then, soundproofing material (preferably Accent) is applied on top of the vibration insulation, however, it is advisable to cover the maximum area
Then all technological openings on the inside of the door are completely covered with vibration insulation (at least with foil)
Use Madeline to “hide” the contact points (as well as wires, speaker mounting areas and where the trim fits to the door)
Some car enthusiasts additionally install Bitoplast on the inside of the trim
After soundproofing the door, the trim is installed in the reverse order
We recommend not using the car for about two days after this, you need to let the Shumka stick well

Sheathing glued with bitoplast

Tips for improving the process:

All wires must be signed or marked during disassembly with multi-colored tape or a marker
Self-tapping screws should also be marked and arranged by size and order of removal.
When gluing materials, avoid gaps; it is much better to overlap
Do not use a hairdryer at home to heat materials.
Start laying the material in solid pieces, and then cut small pieces as needed
Heat the vibromaterials until their black surface becomes sticky
When processing the trunk, use thinner sheets
Leave holes for fasteners free
Don't forget to degrease all surfaces
Additionally, check out our video material

Soundproofing VAZ 2110, 2111, 2112 – process of applying materials.

Before starting work, you need to dismantle all the elements of the interior: the dashboard, trim, handles, lights, etc. The application of sound insulation layers occurs in three or two stages - vibration material, sound insulation and factory (or vibration insulation). After separating the casing, the factory sound insulation of the VAZ 2110, 2111, 2112 and the vibration-absorbing component will be visible.

Application order:

1. Remove the factory soundproofing and clean off any dirt/rust.

2. Factory mastic (vibration-absorbing material) is not removed - a solvent (White Spirit) is applied to this surface. The surface is completely degreased using a sponge. There is no need to dilute the solution.

3. Allow time to dry the car (no more than 8 hours). The vibration material is not attached to a wet surface.

4. Anti-squeak materials are applied to the surface of the dashboard shield. The components are heated, placed on the surface and leveled with a metal roller to eliminate bubbles. To improve the effect, the wires are wrapped in madeleine.

5. Vibration-absorbing material is placed in the trunk, on the floor, ceiling and interior doors - cut with scissors in accordance with the required dimensions. After this, carefully remove the film and place the preheated part on the surface using an industrial hair dryer. Level with a metal roller to eliminate bubbles. The most difficult to reach places are the bottom of the dashboard and the door. For ease of application, it is better to cut the material into very small pieces.

The resulting trunk result:

Doors:

6. Soundproofing material is applied to vibration-absorbing or anti-creaking material. During the work process, a roller is used. The surfaces of the components are self-adhesive.

Floor:

Doors:

7. We apply factory sound insulation or one purchased by you if the factory one is in poor condition.

8. The trunk trim for VAZ 2111,2112 is glued with madeline.

9. Lay the casing and install the door trims.

10. Install the dashboard and other elements in the reverse order.

To improve the process:

It is better to label all wires or mark them with multi-colored tape. Also mark the screws and arrange them according to size.
When applying, avoid gaps - it is better to overlap.
Do not use a household hair dryer to heat materials.
It is recommended to start laying the material with solid pieces, then cut off small ones.
The vibration material is heated until the black side becomes sticky.
To soundproof the trunk, thinner materials are used.

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