Soundproofing the trunk of a VAZ 2107

Processing of wheel arches and bottom

Reliable sound insulation of the VAZ 2107 will require a whole range of measures, and you should start with the outer surfaces. The procedure for performing body processing operations:

The car must be washed most thoroughly, with special attention paid to cleaning the arches and the bottom.
The car should dry well; if there is a compressor, the cavities are blown out with an air flow.
The contractor prepares the surfaces with his own hands by degreasing with solvents. Sufficient ventilation must be ensured during work.
After the surfaces of the car have dried, sound insulation is applied to them using a paint brush or spray gun.

When performing work, the master must ensure that there are no gaps and that the layer of mastic is uniform. Now all that remains is to install the fender lockers in the wheel arches of the car and secure them with self-tapping screws.

Engine compartment and trunk

One of the sources of noise in a car is the engine; the interior can be protected by additionally gluing porous materials to the inner surface of the hood. For the VAZ 2107 and other modifications, self-adhesive sound-absorbing mats are best suited. To correctly cut the sheet with your own hands, you need to make templates from old wallpaper or newspapers.

Self-adhesive sound insulation for cars can be easily cut using a utility knife with disposable blades. Before installation, the surfaces are processed and the protective film is removed from the material. The trunk of the car is modified in a similar way; additional mats are placed from the inside under the carpet.

Do-it-yourself noise insulation

So, the only option left is to do everything yourself. Is it possible? In fact, anything is possible. But if you don’t have any experience in using a screwdriver and wrenches, then this option is not suitable. For any man, soundproofing a VAZ-2107 car is quite a feasible job. The whole complexity of the procedure lies not in the process itself, but in the disassembly and assembly of the insides of the car. After all, you need to get to the original sound insulation, or better yet, to bare metal.

Interior soundproofing

This part of the work is the most labor-intensive and requires the dismantling of interior parts and interior upholstery. To disassemble the interior of a VAZ 2107, you will need metalworking tools and it is advisable to have an assistant. The procedure for installing sound-absorbing coatings inside a car body with your own hands is as follows:

The front seats, rear sofa and carpeting from the floor are removed from the interior.
We remove upholstery from the surfaces of doors and ceilings taking precautions.
Sound insulation is glued to the floor, ceiling and door cavities after preliminary degreasing.
Assembling the car interior with your own hands is done in the reverse order of disassembly.

Practice shows that measures to apply noise-absorbing materials to the surfaces of the body inside and outside can significantly reduce the level of extraneous sounds. This set of works is indicated if it is planned to install high-level acoustic systems.

The domestically produced car VAZ 2107 does not know at all what sound insulation is. Fortunately, today there are many ways to transform domestic vehicles into real comfortable cars. One of the important criteria for achieving comfort is getting rid of extraneous noise in the car interior, unpleasant vibrations and other external sounds from the outside. To achieve such indicators, it is necessary to perform sound insulation of the VAZ 2107 car. In this case, sound insulation can be either partial or complete. In the material we will consider the question of how to do the soundproofing of a VAZ 2107 with your own hands, what materials will be required for the work, as well as the main elements of the car that require processing.

Doors

Sound insulation on the doors of VAZ 2107 cars is necessary in order to reduce the level of noise coming from outside, as well as improve the sound quality of the audio system.

Sound insulation of VAZ 2107 doors

The insulation kit contains only vibration damping material, but it would not be amiss to treat the surfaces with noise absorbers.

The first layer of processing is carried out through technological holes. Vibroplast Silver has proven itself excellent here.
First, treat the areas behind the speakers.
The second layer is Splen 4 millimeters thick.
Now tape the outside of the doors under the cards. Use an audiophile. It is necessary to completely seal the technological holes, which will seal the volume of the doors where the speaker is located.
Applying a vibration filter will increase the rigidity of the door, which will make the acoustics sound better.
The outer sides are covered with vibroplast, and a layer of Spleen is applied on top for sound insulation.
It would be a good idea to treat the door cards with anti-creak. Thick Bitoplast is suitable here.
Crickets inside the doors will also make themselves felt over time, so immediately additionally cover the rods and handles with Madeleine.
Don't use too thick a layer of insulation, otherwise you simply won't be able to secure the cards back together properly.

If you examine the standard sound insulation on the floor of a VAZ 2107, you will find a bitumen-based vibration damper no more than 3 millimeters thick, and a standard noise insulation of 7-10 millimeters. Moreover, more often than not, they were not laid very well, which affected the comfort of the driver and passengers.

Purpose of sound insulation

Additional sound insulation reduces the noise of the engine, suspension, chassis and reduces vibrations that occur during operation of car components. Thanks to this, in the interior of the “Seven”:

you can talk without raising your voice;
you can enjoy music without noise interference;
The overall noise level is reduced, which improves driver concentration and response.

Consequently, sound insulation of the VAZ 2107 provides additional safety and reduces the harmful effects of noise on the nervous system.

Is sound insulation really necessary?

This question can only be asked by owners of foreign cars who have never been to a VAZ-2107 showroom. Having driven once behind the wheel or as a passenger in a VAZ Seven, you immediately understand that sound insulation is necessary. In the cabin you can clearly hear the sound of the engine, gearbox, noise from the wheels and other sounds outside the car.

Those who like to listen to high-quality sound in the VAZ-2107, which lacks sound insulation, will be greatly disappointed. Buying expensive musical acoustics will not help. As long as there is no good sound insulation in the cabin, the music from the speakers will be greatly distorted.

High-quality sound insulation brings joy not only to the ears of the owners of the 2107 model. During the cold season, the car will be warmer and the interior will warm up faster. In hot weather, with proper treatment, the interior of the car will be cooler and more comfortable. Many advantages of the complete sound insulation of 2107 can only be appreciated in person. All questions about necessity will then disappear by themselves.

Features of the use of soundproofing materials

For sound insulation, you should use specialized materials intended for use in a car. Using building sound insulation or, for example, sweatshirts will not give the desired effect and can cause harm. For example, the fire safety of the interior will deteriorate or the material will begin to absorb moisture, leading to corrosion of body elements.

Particular problems are caused by filling body voids with polyurethane foam. This homemade method helps to achieve a significant reduction in noise in the cabin, eliminating vibrations. However, polyurethane foam perfectly absorbs moisture, forming a humid environment in the sills and other cavities of the body. Accordingly, the metal quickly rots and body parts require unscheduled replacement.

The order and method of placing soundproofing materials is of great importance. Violation of technology will not allow you to get the desired result, regardless of the quality of the materials used. They are stacked in the following order:

The first layer is a material that absorbs vibration from the metal elements of the body.
The second layer is a sound-reflecting and sound-absorbing material. The first is located outside in the area of the wheel arches and engine. The sound absorber is used inside the cabin.
A third layer of sound insulation - anti-creaking material - is placed under the trim elements and the dashboard.
The fourth layer can be a decorative coating, if necessary. It gives a complete and aesthetic appearance to the completed work.

Required Tools

To install soundproofing you will need the following tools:

rags;
solvent;
set of screwdrivers and keys;
construction hair dryer;
roller for rolling sound insulation sheets;
cotton mittens;
cardboard for patterns;
spray bottle for applying liquid sound insulation to the bottom;
soundproofing materials.

Soundproofing a VAZ 2107 is a labor-intensive job and will take a whole day to complete. It is better to carry out the work in the garage so as not to depend on weather conditions and protect surfaces from dust and contamination.

Materials used

Factory sound insulation of the VAZ-2107 consists of two layers: anti-vibration and actual sound insulation, often of the simplest quality. For good quality work, these materials can be replaced with improved ones. In addition to these two layers, you can also add soundproofing and anti-creaking layers.

The very first layer protects the interior from vibrations. The reason for them may be different, but most often it is engine vibration transmitted through the supports to the body, as well as transmission vibration. The worse the power unit and gearbox cushions work, the more noticeable it will be felt. The vibration protection material most often consists of two layers: a mastic base and foil. Among the ready-made options are “Bimast”.

As for sound insulation specifically, it is known in auto stores as “Shumka”. Physically it is a porous material such as polyurethane foam or thick felt.

A material that looks similar to vibration insulation is used as a soundproofing layer necessary to reflect sound. But its properties are different. “Spleen” can be used as well-known brands. In addition to sound insulation, this material has high thermal insulation qualities.

Modern “Shumkas” are very convenient with their adhesive layer. Thanks to him, installation of coatings occurs quickly and efficiently. Many materials for sound insulation are used universally - both for cars and for the walls of a residential building.

Preparatory work

First you need to decide on the procedure for soundproofing parts of the car (trunk, interior, hood, etc.). This is followed by:

purchase the necessary materials (they can be purchased in sets for each part of the machine or per meter, having previously calculated the required quantity);
prepare a set of tools;
make cardboard patterns (if the materials are purchased by the meter and not in ready-made kits);
disassemble the insulated area down to the metal, removing the trim elements, dashboard, and other parts that impede work;
wash the surface thoroughly and dry;
clean and treat areas of corrosion;
degrease with solvent.

Sound insulation of the trunk and hood of the VAZ 2107

The opinion that sound insulation of the engine compartment is necessary only for the comfort of others is false. It performs several important functions:

reduces metal vibration;
muffles the engine sound penetrating into the cabin;
improves thermal insulation and prevents the engine from cooling quickly in winter.

Soundproofing the trunk is important for the following reasons:

improves the sound of the subwoofer (if equipped);
dampens external sounds penetrating into the cabin;
reduces vibration noise during operation of the acoustic system and movement of the machine;

In the engine compartment, sound insulation should begin with the engine compartment panel. To increase the elasticity of the “vibroplast”, it must be heated with a construction hairdryer before laying. After laying it, the surface must be rolled with a roller to remove air bubbles, which reduce the effectiveness of the insulation and can cause corrosion of the body. “Splen” must be glued on top of the “vibroplast”.

The hood and trunk lids are insulated in the same way, with the difference that the “vibroplast” is not laid over the entire area, but only between the stiffening ribs.

The wheel arches in the trunk require additional sound insulation. For this, an additional layer of sound insulation is used.

Sound insulation of VAZ 2107 doors

The vibration and noise insulation coating on the doors improves the sound of the built-in speakers, eliminating resonance, and prevents street noise from penetrating into the car. The isolation procedure is as follows:

stick “vibroplast” onto the door panels;
stick the second layer “Accent”;
wrap the rods with “Madeline” to eliminate squeaks;
cover the outer layer of the doors with “vibroplast”;
seal the technological holes with “bitoplast” or foil;
glue the door trim on the inside with “Accent” to improve sound absorption and fit of the part.

Making a door card for VAZ 2107

The old sheathing should be used as a template for marking out the new one. You just need to attach it to a sheet of plywood and, using a pencil, mark the outline of the door card and the holes for the handle fastenings, the door opening lever and under the window handle axis. The latter need not be done if the car has (or will be installed) electric windows. Particular attention should be paid to the correct marking of the mounting holes. If you make a mistake, the door trim will not hold well and knock when the body vibrates.

How to remove the door card on a VAZ classic 2106

After watching my video, you will see “How to remove

door
card (
trimming
) on
a VAZ
classic 2106″, how not to break the clips,...

Soundproofing of the VAZ 2107 interior

Before soundproofing the interior, you should make sure that components and assemblies that can create additional noise are in good working order. Sound insulation of the VAZ 2107 interior is carried out so that vibration and sound insulation materials do not cover the mounting holes.

The procedure for soundproofing the interior:

remove the dashboard;
remove floor and ceiling coverings;
wash surfaces;
clean and treat corrosion areas;
degrease with solvent;
stick a layer of “vibroplast” on the roof, then “Accent”;

Tip: you need to glue the roof with an assistant, who helps warm up the material and holds it while rolling with a roller.

stick on the arches, in addition to the “vibroplast”, a double layer of “Accent”;
lay “Bimast Super” on the floor;
cover the floor with “Accent”;
stick “Accent” on the inside of the dashboard;
cover the body partition under the dashboard with “vibroplast”;
stick “Madeline” in places where the dashboard touches the body to prevent squeaks.

Loud trunk of VAZ-2107

The trunk of a car also requires covering with soundproofing materials. If you provide protection, then make it maximum. In addition, it is in the trunk that most often a variety of small cargo is transported, which makes noise when moving.

Soundproofing the trunk of a VAZ-2107 is a fairly simple procedure. It's probably easier to just process the hood. But there is plenty of work here too. There are few smooth surfaces here, like on the roof, so you still have to try.

Sound insulation of the bottom of the VAZ 2107

External underbody sound insulation reduces tire noise and rock clatter while driving. For this purpose, you should use liquid sound insulation, which is applied with a spray bottle. After drying, it is foamed rubber and performs anti-corrosion and soundproofing functions.

Thanks to the spray application, such sound insulation can be easily and quickly applied in hard-to-reach places. Its weight is significantly lower than that of sheet material, vibration and sound insulation properties are no worse, and the price is only slightly higher.

After applying the soundproofing coating, it is necessary to carefully assemble the parts. Loose tightening of threaded connections, broken clips and other assembly defects can neutralize all efforts to reduce the noise of the “seven”.