Every car owner sooner or later is faced with the unpleasant need to eliminate local damage to the body. Chips from stones, scratches after parking or the consequences of a minor accident require immediate attention to prevent metal corrosion. However, before purchasing materials, many people wonder: is it really possible to find a ready-made one? aerosol can with paint that perfectly matches the shade of your body?
In theory, it seems that it is enough to know the color code specified by the manufacturer and order the corresponding cylinder in the online store. In practice, the automotive industry offers hundreds of shades, which vary depending on the year of manufacture, the manufacturer and even the batch of paintwork. Metallicas, mother-of-pearl and complex three-component paints behave unpredictably if you simply apply them over the old layer without preparation.
Modern technologies make it possible to achieve an almost perfect match, but this requires not just buying a can from the shelf, but carrying out the procedure computer tinting. In this article, we will look in detail at how the selection process works, why the factory code does not always guarantee the result, and what tools will help you save money by avoiding expensive repainting of the entire element in a specialized service.
Why the factory color code is only half the battle
Many car enthusiasts make the mistake of relying solely on the paint code, which can be found on a plate in the doorway or under the hood. This code is certainly a starting point, but it only describes the basic formula developed by the manufacturer at the time the model was released. Over the years of operation, the car may have undergone local repairs, and previous owners may have used paint with a slight deviation from the original.
In addition, factory paint Over time, it fades under the influence of ultraviolet radiation and becomes covered with microscratches and an oxide film. If you apply a fresh coat, mixed strictly according to the factory recipe, to a faded body, the difference in shade will be noticeable. This is especially noticeable on black, red and white colors, where even the slightest deviation in tone creates a “patchwork” effect.
⚠️ Attention: Never rely solely on a color code when ordering paint for large areas. Even a new car can have different colors between the doors and fenders due to different batches of paint on the assembly line.
There is also the concept of "metamerism", where a color looks the same in one light and completely different in another. Professional colorist takes these nuances into account by adding corrective pigments to the base mixture. Therefore, the phrase “choose paint” does not mean searching for a ready-made solution, but creating an individual emulsion specifically for your car.
Computer selection technology: how it works
The process of creating the perfect paint begins with a visit to a specialized tinting center. There, specialists use spectral analysis or computer programs containing thousands of recipes. If you bring a part (for example, a gas tank flap or trunk lid), the technician can take a sample using a special device that will analyze the reflection spectrum and give the exact proportions of the components.
The process is based micron precision mixing. Base pigments, binders and solvents are dosed on high-precision electronic scales. An error of even 0.1 grams can change the shade, especially in complex colors like murano, chameleon or deep blue tones. After mixing, the master must make a “painting” - a test layer on a metal plate or paper.
This sample is dried and compared with the car body under different lighting: in the shade, under bright sun and under artificial lamp light. Only after making sure of a match, the master fills the finished mixture into an aerosol can under the pressure necessary for proper spraying. It is important to understand that spray paint lays down differently than material applied with a spray gun, so special additives may be added to the mixture to improve spreading.
What is “painting” and why is it needed?
Painting is a control sample of the applied paint, which allows you to visually evaluate the match of tone, metallic grain and overall aesthetics of the coating before starting the main work. Without this step, the risk of getting “stains” on the body increases many times over.
Where to look for paint codes on popular car brands
Before you go to the tinting, it is useful to find the color code yourself so that you have a basic idea of the palette of your car. The location of the plates (nameplates) depends on the manufacturer. For example, in cars VAG Group (Volkswagen, Audi, Skoda) the code is often located in the trunk under the mat or in the service book, indicated by an alphanumeric combination like LY7C or GU5.
From Japanese manufacturers such as Toyota and Nissan, the plate is usually located on the body pillar in the driver's door opening or under the hood on the glass. The code may consist of three characters, for example 040 (Super White) or 337 (Deep Blue Pearl). For American brands, for example Ford or Chevrolet, information is often duplicated on the door pillar and under the hood.
| Car make | Typical location | Example code | Features |
|---|---|---|---|
| BMW / Mini | Under the hood, on the glass or arch | 475, A96 |
The code structure changed frequently after 2010 |
| Mercedes-Benz | In the doorway or under the hood | 744, 197 |
Three-digit codes, often duplicated in PTS |
| Hyundai / Kia | Driver's door pillar | WM, U2 |
Two-letter or alphanumeric designations |
| Lada (VAZ) | Under the hood, on the trunk lid | 100, 691 |
Often indicated on a separate tag under a lock |
| Renault | Front door pillar | NNP, RVU |
Three-digit letter code |
It is worth noting that on older cars the plate could get lost or become unusable. In such cases, experts use color fans or spectrometers for selection. Also, the color code is often indicated on the car documents, although it may be written there with errors or abbreviations, so a visual check is still necessary.
Is it possible to spray paint an entire car?
The issue of completely repainting the body using aerosol cans remains one of the most controversial. This is theoretically possible, and there are enthusiasts who achieve acceptable results. However, in practice full painting from a cylinder requires a colossal consumption of material, time and a perfectly prepared room. The spray can creates a “shagreen leather” (orange peel) texture, which is difficult to remove without professional polishing.
The main problem is the uniformity of the layer. The spray gun in the hands of the master delivers paint under stable pressure, ensuring a uniform film thickness. The pressure in the can drops as the contents are consumed, which leads to changes in shade and texture in different parts of the body. For local repairs - scratches, chips, thresholds - this method is excellent, but for large surfaces (roof, hood) the risk of stains is very high.
If you nevertheless decide to take this step, you will need not only paint, but also primer, varnish, solvents, polishing pastes and, possibly, several dozen cylinders. Savings in this case are doubtful, since the cost of high-quality materials for balloon painting is close to the price of working in an inexpensive service, where the result is guaranteed.
☑️ What you need for spray painting
The nuances of painting with metallic and mother-of-pearl
Painting simple “acrylic” colors (without a metallic effect) is easier, since they are one-step. The difficulties begin with metallized and pearlescent coatings, which consist of two stages: base paint (color + aluminum powder) and varnish. It is the base that creates depth and play of light, and this is where the main difficulty of working with a spray can lies.
The aluminum particles in the paint should lie parallel to the surface to give an even shine. If you violate the distance or angle of inclination when spraying from a can, the particles will fall chaotically, and “clouds” or stripes will appear on the part, which will be visible from different angles. This effect is called "variation of tone during drying." In addition, pearlescent paints require the application of several very thin layers (fog sprays), which is difficult to control manually.
⚠️ Attention: When working with metallics, be sure to use a “transition” (shading of the boundaries) on adjacent elements, otherwise the border between the old and new paint will be clearly visible even with an ideal tone selection.
To successfully work with such colors, professionals recommend applying the paint crosswise, carefully controlling the viscosity and drying time between layers. The varnish that is applied over the base must also be of high quality in order to withstand subsequent polishing and not become cloudy over time.
Use a heated can or a special aerosol nozzle. This gives a more stable pressure and a spray pattern closer to the spray gun, which is critical for metallic paints.
Surface preparation and application technology
The quality of painting depends 80% on preparation. Even perfectly matched paint will not hide bumps, rust or greasy stains. The first step is always washing and degreasing the surface with special compounds (anti-silicone). Then follows mechanical treatment: grinding the damaged area, applying putty (if there are dents) and priming.
The primer creates adhesion (cohesion) between the metal and the paint. It is important to let each layer dry according to the instructions on the can. Typically, interlayer drying is 10-15 minutes, but complete polymerization can last a day. Before applying the color layer, the surface is degreased again and passed with an antistatic cloth to remove dust.
The spray paint technique requires practice. You need to keep the balloon at a distance of 20-30 cm from the surface, perpendicular to it. Movements should be smooth, back-and-forth, capturing the already painted part. The first layer is made thin, “dusty” so that the paint sets. The second and third layers are applied more intensely, but without drips. After the paint has dried (for metallics), varnish must be applied in 2-3 layers.
Final polishing is carried out no earlier than a day later (preferably a week), when the materials finally gain hardness. This allows you to remove the “shagreen skin” and give the body a factory gloss. Usage abrasive pastes different grain sizes returns the surface to perfect smoothness.
The main secret of success is not to rush. Maintaining time intervals between layers is more important than the speed of work.
Frequently asked questions (FAQ)
How long does it take for spray paint to dry completely?
Primary drying (“from dust”) takes 15-30 minutes. However, complete polymerization, when the coating gains maximum strength and chemical resistance, occurs within 7-14 days. During this period, it is not recommended to wash the car with aggressive chemicals or polish with abrasives.
Is it possible to mix paint from different cans?
It is strictly not recommended to mix the contents of different cylinders, even if they are the same color. Propellant pressure and composition may vary, resulting in poor atomization or chemical reaction. If one cylinder is not enough, it is better to buy a new one from the same batch.
Do I need to remove the part for painting?
For local repairs (chips, scratches), it is not necessary to remove the part; it is enough to properly seal the adjacent areas with masking tape and film. However, for complex elements or large damage, dismantling is preferable, as it allows you to process the ends and avoid paint getting on the seals.
Why did “shagreen skin” appear after painting?
The orange peel effect occurs due to paint that is too thick, incorrect spray distance, draft or low room temperature. This can be removed only after complete drying using polishing with abrasive pastes.
Does computer selection guarantee a 100% match?
Computer selection gives an accuracy of about 95-98%. The remaining percentages depend on the fading of the old coating, application features and human factor. That is why a test spraying (painting) stage is required before the main work.