Restoring a car's paintwork is a task faced by every owner who wants to maintain the presentable appearance of their vehicle. Small chips from gravel, scratches in the parking lot or scuffs on the door sills do not require an expensive visit to the service center if you approach the issue wisely. The modern market offers an effective solution - car enamel in cans, individually selected to match your body color. This allows local repairs to be carried out quickly, economically and with a high degree of shade matching.
However, the success of the operation depends not so much on the brand of paint, but on the accuracy of the selection. The automotive industry has thousands of shades, which may vary depending on the model year and operating conditions. The wrong tone will make the repair area a noticeable stain, ruining all efforts. In this article we will look at how to find VIN code or the paint number, where to order an exact copy of the factory color and what nuances need to be taken into account when painting it yourself.
Many car enthusiasts mistakenly believe that it is enough to buy a can with the name of the color, for example, “White Crystal” or “Black Night”. In practice, the same factory code can have different shades depending on the batch and type of pigment. That's why professional selection of auto enamel carried out according to a special code specified in the technical documentation of the vehicle. Understanding this process is the first step to an ideal body restoration result.
Finding the paint ID code on a car
The first and most important step is to locate the factory color code. Car manufacturers don't hide this information, but they do post it in different places depending on the make and model. Most often, the data plate is located in the engine compartment, on the body pillar or in the luggage compartment. Ignoring this code and trying to choose a color by eye or from the RAL catalog is almost guaranteed to lead to disappointment.
For cars of the German concern Volkswagen Group (VW, Audi, Skoda, Seat) the code is usually located on a sticker in the trunk under the carpet or on the first page of the service book. It consists of two or three letters/numbers, e.g. LY7C or 8E. From French manufacturers such as Peugeot or Renault, the label is often located on the driver's door pillar or under the hood on the side member. It is important to rewrite the code completely, including all symbols, since one mistake will make selection impossible.
Japanese and Korean cars such as Toyota, Honda or Hyundai, usually have a marking plate on the driver's door pillar, next to the tire and pressure information. The color code there can be indicated as C/TR (Color/Trim) or simply Color. If you cannot find the code yourself, you can always contact an authorized dealer by calling VIN number car, and get accurate information from the database.
⚠️ Attention: Never rely on the color of the paint name in catalogs. The name "Silver Metallic" from different manufacturers and even in different years of production of the same model can differ radically in shade and grain.
After the code is found, it is recommended to take a photo of the sign and double-check the data on the Internet through specialized databases. This will help ensure that the car has not been repainted a different color by the previous owner, which often happens when buying used cars. Accuracy at this stage determines 90% of the success of the entire event.
Manufacturing technology and types of automotive enamels
Understanding what's inside the can helps you use it correctly. Modern car enamels are divided into several main types, and choosing the wrong type can lead to the fact that the repair layer will not adhere or will have a different structure. Most modern coatings are based on acrylic resins, but their composition and method of application vary.
The most common option for factory coatings is the “base + varnish” system. In this case, the can only contains a colored pigment (base), which has no gloss and requires the mandatory application of transparent acrylic varnish on top for protection and shine. The second type is one-component acrylic enamels, which already contain a varnish component and, after drying, give a glossy finish without additional coating.
The third option is enamels with the effect metallic or mother of pearl. Such paints contain small particles of aluminum or mica, which create a characteristic shine and shimmer. When working with such compositions, it is critical to follow the shaking and application technology, since metal particles tend to settle to the bottom. Uneven distribution of pigment will result in blemishes and differences in shade.
What is the difference between 1K and 2K paint?
1K (one-component) paint dries by evaporation of the solvent and is ready for use immediately. 2K (two-component) requires the addition of a hardener before use, which makes the coating much stronger and chemically resistant, but reduces the life of the mixture in the can.
When ordering paint in a can, the master colorist mixes the components based on your code. However, it is worth considering that over time, the factory paint on a car fades under the influence of ultraviolet radiation. Therefore, sometimes a light tinting ready-made mixture so that the new layer fits perfectly on the old, slightly faded body.
Mixing process and computer color selection
Computer selection of auto enamel is a high-precision process that eliminates the human factor when mixing pigments. Specialized programs contain formulas for thousands of cars produced over the past decades. When you provide the paint code, the system calculates the exact proportions of components needed to recreate the original shade.
The mixing process takes place on high-precision electronic scales. The colorist loads the code into the program, and the system shows how many grams of each pigment need to be added to the base. An error of even tenths of a gram can change the shade, so the use of professional equipment is indispensable here. After mixing, the paint is thoroughly mixed until a homogeneous mass is obtained.
It is important to note that even if the formula is perfectly matched, the actual color may vary due to the age of the vehicle. The paint fades, oxidizes and changes its properties. Experienced craftsmen often do paint - a test layer on a metal plate, let it dry and compare it with the car body under different lighting. If the shade moves to the side, micro-adjustments are made to the mixture.
| Coverage type | The need for varnish | Difficulty of application | Durability |
|---|---|---|---|
| Acrylic (Solid) | Not required | Low | Average |
| Metallic (Base) | Required | High | High |
| Mother of pearl | Required | Very high | High |
| Primer-enamel | Preferably | Low | Low |
When ordering a selection service, be sure to check whether a test application is included in the price. This is a small detail that will save you from redoing the whole job. It is also worth asking about the expiration date of the finished mixture in the cylinder - the active components may lose their properties over time.
If your car is a rare model or year that is not in the database, the colorist can remove a paint sample from an inconspicuous area (for example, the inside of the gas filler flap) and match the color with a spectrophotometer.
Surface preparation and necessary materials
The quality of the final result depends 80% on surface preparation. Just spraying paint on rust or dirt means getting a piece that peels off within a month. Before starting work, the car must be thoroughly washed and degreased. For degreasing, it is better to use special anti-silicones that do not leave a film.
If there is rust at the damage site, it must be removed mechanically. To do this, use sandpaper or special rust converters. After cleaning, the surface becomes matte, which ensures better adhesion (adhesion) of materials. It is also recommended to lightly matte smooth, intact paint around the chip with a fine abrasive to make the transition less noticeable.
For quality repairs, you will need more than just a can of spray paint. The minimum set of materials includes: degreaser, masking tape, covering film or newspapers, sandpaper of various grits (from P240 to P2000), polishing paste and, if necessary, automotive primer and varnish. It is strictly forbidden to apply paint to metal without primer - it will not stick.
- 🛡️ Protective materials: masking tape, film, respirator, gloves.
- 🧼 Chemistry: degreaser, anti-silicone, polishing paste.
- 🔧 Tool: sandpaper (P800-P2000), polishing machine (optional).
- 🎨 Consumables: primer in aerosol, varnish in aerosol (for metallics).
Pay special attention to the ambient temperature. It is optimal to carry out work indoors at a temperature of +18 to +22 degrees Celsius. Too cold or hot air, as well as high humidity, can ruin the paint polymerization process, causing dullness or shagreen.
Spray paint technology
The painting process itself requires calm and consistency. The can of paint must be shaken thoroughly for 2-3 minutes so that the ball inside begins to move freely and mix the components. Before applying to the car, make a few test sprays on the cardboard to check the spray pattern and remove any clumps.
You need to apply the paint from a distance of 20-30 cm from the surface, holding the can strictly perpendicular to the body. Movements should be smooth, back and forth. The first layer is applied very thin, almost transparent - this is the so-called “adhesive layer”. It needs to be allowed to dry for 10-15 minutes. The next 2-3 layers are applied more intensely, but without the formation of drips.
☑️ Checklist before painting
⚠️ Attention: Do not try to paint over the chip in one pass! A thick layer of paint will certainly flow under the influence of gravity, and the defect will become even more noticeable. Better 4 thin layers than one thick one.
If you are working with the “base + varnish” system, then after the color layer has dried (usually 20-30 minutes), you need to apply varnish. The varnish is also applied in 2-3 layers with intermediate drying. It protects the pigment from fading and gives color depth. After complete drying (it is better to let it sit for a day), the surface can be polished.
Transition polishing and finishing
After the paint has dried, the repair area may look rough or differ in smoothness from the rest of the body (the “orange peel” or shagreen effect). To make the transition invisible, polishing is used. You should start by carefully sanding with fine sandpaper (P2000-P2500) with water to even out the shagreen grain of the varnish.
Next, polishing paste is used. First, a more abrasive paste is used to remove marks from sandpaper, then a finishing paste is used to add gloss. It is better to polish with a special machine with a soft nozzle, but you can also do it manually, although it will take more time and effort. The main thing is not to rub the varnish into paint, especially on the edges of parts.
The result of proper polishing is a single, smooth finish where the boundary between old and new paint visually disappears. If the transition is still noticeable, additional shading of the edges or the use of special transition solvents may be required, but this is a job for advanced users.
Perfect polishing hides not only shagreen, but also slight differences in shade, making the repair almost invisible to the prying eye.
Frequently asked questions (FAQ)
Can I save an open can of spray paint for next time?
Yes, you can, but the shelf life is limited. To prevent the can from drying out, turn it upside down and press the nozzle until clean gas comes out. This will clear the valve. Should be stored in a warm place, upside down. The lifespan of such “preservation” is from 6 months to 2 years.
How many spray cans are needed to paint one part, for example, a door?
To completely paint one part (bumper, door, fender) in 2-3 layers, 2-3 cans of paint (400-500 ml each) and 1-2 cans of varnish are usually required. For small chips and scratches, one can will be enough, which will be left for the future.
What should I do if the paint code does not match the actual color?
This is a common situation for older cars. The paint is fading. In this case, colorists do a “matching” - they add a little corrective pigments to the mixture so that the new color matches the current, faded state of the body, and not the factory standard.
Do I need to remove the part for painting?
For a professional result, it is desirable. But for local repairs of minor defects, you can do without removal by carefully sealing adjacent elements with masking tape and film. The main thing is to provide access to all sides of the damage.