Do-it-yourself soundproofing of the Lada Granta floor

Noise

Extended noise insulation grant package

I would like to touch on the topic of noise in a car in a little more detail. In addition to being an unnecessary sound in a car, noise is characterized by the following things:

• It has a negative effect on some human organs;
• Noise reduces the driver's ability to see clearly and act reflexively;
• It contributes to the occurrence of all kinds of diseases, including mental ones, as it has a negative effect on the nerves;
• Due to constant noise, blood vessels narrow, the work of the heart muscle is activated, which causes blood pressure to increase and angina pectoris may occur;
• Noise is a source of stress.

Causes of noise

Sound insulation of Lada Granta car

As a rule, the noise varies:

• Intermittent. It occurs due to a faulty heater motor. Less commonly, the cause is the air conditioner or cooling motor;
• Permanent. In this case, we are talking more about external noise entering the cabin from outside. Often the cause of constant noise is the transmission, suspension or bad tires;
• Impulse. In this case, such noises are associated with creaks, knocking or clicks. Car body panels, various interior elements, and much more can also create impulse noise.

Distribution methods

Soundproofing grant

It will also be useful to know about the types of noise progression:

• The airborne method of propagation involves the transmission of noise from the source to a specific point (the ears of the driver or passengers). The volume of the sound in this case will be determined by the presence of obstacles in its path: the more there are, the weaker the noise will be;
• There is also a structural method of progression of noise. It involves the transmission of sound by various body parts that create vibrations. It will be useful to know that vibration is transmitted better through metal than through plastic or similar material.

Note. It is because of this that two options for dealing with noise are used. ZPM (sound-absorbing materials) eliminate noise transmitted by air, vibration-absorbing materials reduce vibrations.

What is the danger of noise?

The basic configuration of the Lada Granta car has everything you need, but the level of comfort of the vehicle is average. Unnecessary sounds can be removed only through comprehensive sound insulation. It will give the following results:

• will reduce the negative impact of noise on some organs;
• will allow the driver to clearly react to situations on the roads and quickly take the necessary actions;
• will protect against the development of dangerous diseases, including mental ones (high noise levels negatively affect the nervous system).

For example, a large number of unpleasant sounds leads to a narrowing of the lumen of blood vessels, activates the work of the heart muscle, causes a sharp jump in blood pressure, angina pectoris. Therefore, noise becomes a source of chronic stress.

Materials for Shumka

The table below shows the types of materials for sound insulation on the Lada Grant.

"Vibro"

Vibration-absorbing materials or simply “vibra” are recommended to be applied to the metal parts of the body of the Grant and any other car. The power unit, transmission and suspension elements - all this and also uneven road surfaces and air resistance cause body parts to creak and make sounds unpleasant for the driver's hearing.

Soundproofing frets grants

To understand how the "vibe" manages to absorb such strong vibrations, one must study the basic physics regarding internal friction. The so-called conversion of vibration energy into heat occurs.

Note. Using the special materials shown in the table, you can achieve the best effect. All materials presented in the first vertical column of the table have an adhesive mounting layer that allows them to be easily applied to metal surfaces. In addition, such materials also have sealing properties, due to which the body is reliably protected from corrosion.

All materials belonging to the “vibro” category are based on bitumen or mastic. They may or may not have a layer of aluminum foil.

Note. As for the materials from the Bimast series, they have two layers - bitumen and mastic.

Sound absorbers

ZPMs are designed to absorb noise that is transmitted through the air. Basically, this category presents materials with a porous base. They can also be coated or uncoated.

Note. It is recommended to install these materials in places directly close to noise sources. Let us note one more additional property of materials in this category – low thermal conductivity.

Sound insulators

Soundproofing materials perfectly insulate the interior of the Granta and other cars from outside noise. They represent a kind of barrier that stands in the way of noise spreading in the air.

Note. These materials are more often used as a second layer applied to the “vibro”.

Gaskets

Gasket materials ideally eliminate squeaks and vibrations of parts.

Vibration isolation

Vibration-absorbing materials (vibration for short) are applied to the iron parts of the body of a Grant or other car. The transmission, power unit, suspension elements - all this and uneven road surfaces, a certain air resistance, cause the parts to creak and make other sounds that are not particularly pleasant to the ear.

The operation of vibration is explained by the laws of physics, which determine the parameters of internal friction. As a result, the vibration energy is converted into heat. The basis of the compositions is mastic or bitumen.

Do-it-yourself surgery technique

As you know, sound insulation on Grant is carried out in stages. First one part of the car is processed, then the others.

Doors

How to properly soundproof Granta doors

As a rule, the soundproofing process begins with the doors. Some, after completing the “noise” of the doors, stop there and do not continue, others carry out complete sound insulation. If you treat only the doors, this will be called partial sound insulation, but it gives a good result, especially in terms of improving acoustic properties.

Note. Thus, the doors of Lada Grants often become the location for installing the front speaker. And in this regard, this part of the car must first of all be soundproofed. The untreated door itself makes a poor speaker enclosure. On the other hand, a well and correctly processed door does not “sing along” with the dynamics, but is “silent”.

Options for “shumming” doors, in turn, can also be different:

• The minimum option, when only the outer panel and door card are processed with materials;
• Standard version, which will be described in detail below;
• The maximum version of execution, which is of more competitive interest. More dense and thick materials are used here.

Soundproofing the trunk of a Lada Granta

Today we continue to publish reports on the sound insulation of the Lada Granta. It's no secret that budget cars, which Granta is, are not distinguished by high-quality and advanced sound insulation, but with our help you can make your stay in the car comfortable and convenient. This article will talk about soundproofing the trunk with your own hands.

Car soundproofing technology is the same for all brands and types of cars, however, specific cases have their own characteristics. In the case of the Lada Granta, the whole process begins with dismantling the trunk trim. Next, the entire work surface needs to be cleaned and degreased; White Spirit is suitable for this.

Installation of sound insulation on a Lada Granta begins with vibration-isolating material (in this example, sheet vibration-insulating material similar to STP is used). We cut out soundproofing sheets of a suitable size (the larger the pieces, the better), and heat the bitumen side with a technical hair dryer. Then we glue the “vibra” onto the cleaned metal of the body, and roll out the sheet with a hard (plastic/iron) roller. We apply the next sheet of vibrating material with an overlap.

As a second layer of sound insulation, it is customary to use an accent or BiPlast (sound-absorbing material) or SPLEN (more heat-insulating material). They all have a self-adhesive backing, so there will be less fuss with the second layer. We cover 100% of the surface to get maximum effect. The only exceptions are technological openings, these include openings for interior ventilation.

Soundproofing the arches brings the greatest effect, because all the noise from the wheels is transmitted through them. Therefore, if you decide to cover not the entire surface of the trunk with soundproofing materials, then do not skimp on the wheel arches. Then assemble in reverse order. Let us recall that in the previous article we looked at the sound insulation of the wheel arches on the Grant, which will help make the car quieter and more comfortable.

Soundproofing of the trunk lid is optional; all the same materials are used. Here it is worth paying attention to the entire cover, which will increase significantly after sticking the vibrating material.

Video. Trunk noise insulation Grants

As a result, doing this type of soundproofing with your own hands alone will take you about 7 hours. In this case, to completely cover the trunk of a Lada Grant, 17 sheets of vibration isolation and about 8 m2 of splenium were required.