Crossover owners Skoda Kodiaq Often faced with a characteristic problem: at high speeds in the cabin there is a noticeable hum from the wheels and wind, and when closing the doors, you hear not the deaf sound that is expected from a car of this class. This is due to the features of the body design and the use of thin metal in the door panels, which creates a resonance when moving.
Many car owners try to solve the problem by replacing seals or installing additional acoustics, but without preliminary metal preparation, these measures give only a temporary effect. To achieve maximum comfort, it is necessary to carry out a comprehensive work to reduce the noise and vibrations affecting the door structure.
There are several approaches to improvement Kodiaq, from the use of simple bitumen mastics to the use of modern vibration-damping materials based on rubber. The choice of a specific method depends on your budget, the availability of tools and the desired result: simply remove rattling or create a โsilenceโ effect like in premium sedans.
Analysis of noise sources in Kodiak doors
Before starting work, it is necessary to understand the nature of the noise that bothers the driver and passengers. In the car Skoda Kodiaq The main sources of extraneous sounds are vibration of the thin metal of door panels and aerodynamic noise penetrating through loose joints.
At speeds higher 80 km/h the air begins to actively flow around the body, creating a whistle at the junction of the glass and mirrors. In addition, the operation of the suspension and the contact of the tires with the asphalt transmit low-frequency hum directly to the door leaves, which begin to act as membranes, amplifying the sound.
A special feature of the model is the presence of technological holes in the doors for water drainage and operation of window lift mechanisms. Through these holes, sound from the wheel arch freely penetrates into the interior, bypassing the soundproofing layers if they were not fully installed properly.
It is important to note that simply gluing the material to the outside of the door is not enough. It is also necessary to treat the inner surface where the mechanisms and wiring are located, since this is where resonance most often occurs.
- ๐ Low-frequency hum from the engine and suspension, amplified by metal vibration.
- ๐จ An aerodynamic whistle that occurs due to air turbulence around the mirrors.
- ๐ฉ Mechanical rattling from plastic panels and loose elements.
โ ๏ธ Attention: Do not try to muffle noise only by the thickness of the door seal. This can cause the door to stop closing tightly and the window lift mechanism to start working with overload.
Choosing the right materials for the job
The car audio market offers a huge amount of materials, but not all of them are suitable for Skoda Kodiaq. Using cheap bitumen sheets with a low melting point can cause them to melt in the summer heat and create an unpleasant odor in the cabin.
For high-quality work, it is best to choose modern materials based on rubber or butyl rubber with an aluminum or polypropylene coating. They have high adhesion and do not flow at temperatures up to +90ยฐC and effectively dampen vibrations even on thin metal.
The sound insulation structure usually consists of two layers: a vibration damper and a sound insulator. The first layer is glued directly to the metal to reduce its resonance, and the second, more porous layer is laid on top to absorb residual sound.
For crossover doors, the optimal vibration damper thickness is considered to be from 2 to 3 mm. Thicker materials may be overkill and will weigh down the door, putting stress on the hinges.
- ๐ก๏ธ Vibration dampers of the Biplast or Shumoff type with aluminum coating.
- ๐งฉ Sound absorbers with an open porous structure for the inner layer.
- ๐ง Sealants and mastics for processing joints and technological holes.
- Bitumen sheets (cheap)
- Rubber materials (quality)
- Complex solutions (expensive)
- Haven't chosen yet
Preparing the vehicle and tools
Before starting work, it is necessary to prepare not only the car itself, but also the workplace. The process of dismantling door cards in Kodiaq requires care, as plastic clips can be fragile, especially in the cold season.
You will need a set of tools: a plastic spatula for removing panels, a Phillips screwdriver, a screwdriver with a set of bits, a heat gun for heating materials and a roller for rolling glued sheets.
It is important to thoroughly clean the metal surface from factory anti-corrosion, dirt and dust. If there are traces of bitumen mastic on the metal, which the manufacturer applied spotwise, it is better to remove them completely to ensure maximum adhesion of the new layer.
To protect interior elements from dust and dirt, it is recommended to use seat covers and armrests. It would also be a good idea to purchase a new set of clips for attaching the door card in advance, since the old ones may not withstand repeated dismantling.
- ๐ง A set of keys and sockets for removing door card fasteners.
- ๐ก๏ธ Construction hair dryer with temperature control for heating the material.
- ๐งผ Degreaser and antisilicone for preparing metal surfaces.
โ๏ธ Preparation for soundproofing doors
Vibration insulation technology
The process begins with the application of the first layer - a vibration damper. This material should cover the maximum possible area of โโthe metal surface of the door, leaving small indentations from the edges and technological holes.
The material should be applied in small sections, warming it with a hairdryer and pressing with a roller. It is important to avoid the formation of air bubbles between the metal and the material, as this will reduce the effectiveness of vibration damping.
Particular attention should be paid to the internal door stiffeners. They also need to be covered, but with a smaller thickness of material, so as not to critically increase the weight of the structure. Leave technological openings in places where window lift mechanisms are installed.
After gluing the first layer, you need to let it rest at room temperature for at least 12-24 hours. This will ensure complete polymerization of the adhesive layer and reliable fixation.
If you are planning to install acoustics, then in the place where the speaker is mounted you need to make a โpodiumโ of several layers of vibration isolation to create a rigid base and avoid rattling of the speaker.
โ ๏ธ Attention: Do not use a hair dryer at maximum setting, so as not to overheat the metal of the door. This may lead to deformation of the sheet or damage to the paintwork.
Secrets of working with a roller
Use a heavy roller with a rubberized surface. The movements should be progressive and strong, from the center to the edges, in order to squeeze out all the air. Roll the material at least 3-4 times in one place.
Sound insulation and processing of plastic panels
After the vibration damper has dried, you can proceed to the second stage - laying the sound-absorbing layer. This material is applied over vibration insulation and fills the volume inside the door.
For the inner layer, it is better to use closed-cell materials or foil insulation, which reflect sound back into the door, preventing it from entering the interior. The thickness of this layer can vary from 8 to 15 mm.
Don't forget to process the back side of the plastic door card. Sticking a thin layer of vibration damper and sound absorber onto the plastic will remove the characteristic ringing that occurs when a door is suddenly closed or hits a bump.
All cracks and joints between metal and plastic must be sealed with a special porous tape or sealant. This will prevent dust and moisture from getting inside the door, and will also eliminate whistling sounds from friction of the elements.
- ๐ฌ๏ธ Sound absorbers such as โAccentโ or โBiplastโ for the inner layer.
- ๐ท๏ธ Moisture-proof membrane to protect against condensation inside the door.
- ๐ Sealing tape for joints and technological openings.
The sound-absorbing layer must be laid so that it does not interfere with the operation of the windows or block the water drainage channels.
Comparison table of materials
For clarity, here is a comparison of popular materials used for sound insulation Skoda Kodiaq. This will help you choose the best option in terms of price and quality.
| Material type | Thickness | Weight (kg/mยฒ) | Efficiency |
|---|---|---|---|
| Bitumen sheet (economy) | 1.5 mm | 3.5 | Low |
| Rubber vibration damper | 2.0-3.0 mm | 4.0-5.0 | High |
| Polyurethane foam (sound absorber) | 10 mm | 0.5 | Average |
| Moisture-proof membrane | 2.0 mm | 1.5 | High |
As can be seen from the table, the use of modern rubber materials gives significantly better results with comparable weight. Saving on materials often leads to the fact that after six months the noise returns and the adhesive layer begins to peel off.
It is important to consider that for Kodiaq there is no need to glue the material in several layers to the same areas. One high-quality layer of vibration damper and one layer of sound absorber are enough to achieve an excellent effect.
If you are planning to install a powerful speaker system, then in the speaker mounting area you can use an additional layer of material to create a rigid base. This will improve the sound quality of the bass and remove extraneous sounds.
Before purchasing material, measure the area of each door. Typically, one front door takes about 1.5-2 sq.m. vibration damper and 1 sq.m. sound absorber.
Common mistakes when working independently
Even with instructions, beginners often make mistakes that ruin all their efforts. One of the most common problems is insufficient preparation of the metal surface.
If you do not remove the old anticorrosive agent or degrease the surface, the new material simply will not stick. As a result, after some time it will fall off, and moisture trapped under it can cause corrosion.
Another mistake is ignoring technological holes. If they are not sealed tightly, noise from the wheel arch will continue to penetrate into the cabin, despite the thick layer of insulation.
It is also worth paying attention to the weight of the door. Excessive weighting of the structure can lead to sagging hinges and difficult closing. Therefore, it is important to strike a balance between efficiency and weight of materials.
- ๐ซ Ignoring surface cleaning before sticking materials.
- ๐ซ Use of materials not intended for automotive temperatures.
- ๐ซ Incorrect calculation of the amount of material and its thickness.
โ ๏ธ Attention: Do not use low melting point materials in summer. They can leak and damage the interior door trim.
FAQ: Answers to popular questions
How long does it take to soundproof one door?
On average, high-quality soundproofing of one front door takes from 2 to 3 hours. This includes time for dismantling, preparation, adhesive materials and assembly. Rear doors take a little less time due to their smaller footprint.
Do I need to remove the door from the car?
It is not necessary to remove the door from the car. All work can be performed without removing the door, provided that you have access to the internal cavities after removing the plastic card. This simplifies the process and saves time.
What is the maximum thickness of material that can be used?
The recommended total layer thickness should not exceed 15-20 mm, otherwise there will be problems with installing the door card and operating the power windows. A layer that is too thick may also block water drainage channels.
Does sound insulation affect the performance of electronics?
When installed correctly, sound insulation does not affect the operation of the electronics. The main thing is not to damage the wiring when removing the card and not to block the ventilation holes, if there are any in the door structure.
Is it possible to do noise reduction in winter?
Soundproofing in winter is not recommended. Low temperatures affect the adhesiveness of materials and the elasticity of plastic. It is better to carry out work in a warm room at a temperature higher +15ยฐC.