Painting a car with acrylic paint is a task that requires not only patience, but also knowledge about materials, tools and technologies. Acrylic enamels are popular due to their durability, brightness and relative ease of use, however, even small errors at the preparation or application stage can lead to defects: from shagreen to peeling of the coating. This article will help you understand all the nuances - from choosing paint to final polishing, so that the result will please you for years.
It is important to understand that acrylic paints come in one-component (for local repairs) and two-component (for full painting with hardener). The latter provide a stronger and more durable coating, but require strict adherence to mixing proportions. It is also worth considering that acrylic dries quickly, so you need to work quickly, but without fuss. If you are painting a car for the first time, practice on unnecessary parts or panels - this will help you avoid mistakes at the main stage.
1. Selection of materials: what acrylic paint and tools to use
The first step is choice acrylic enamel. Brands in the budget segment are represented on the market (Mobihel, Kudo), and premium (Sikkens, PPG, Spies Hecker). For beginners, the best option would be paint in the mid-price range, for example, Duxone or Vika — they fit well and forgive small mistakes. Please note color index: it must completely match the original shade of the body (it can be found on the plate under the hood or in the car documentation).
In addition to paint, you will need:
- 🔧 Hardener (for two-component systems) - usually mixed in a ratio of 2:1 or 4:1 (check the instructions for the paint).
- 🎨 Thinner — choose depending on the room temperature (there are “fast”, “medium” and “slow” options).
- 🖌️ Spray gun with a nozzle of 1.3–1.5 mm (for the base layer) and 1.7–2.0 mm (for varnish).
- 🧴 Primer (acrylic or epoxy) and putty (if there are dents).
- 🧽 Degreaser (for example, App Wash&Gloss) and antisilicone.
Don't skimp on personal protective equipment: a respirator with a filter against organic vapors, goggles, gloves and overalls are required. Acrylic fumes are toxic, and fine sanding dust can cause lung irritation. Also prepare the room: it should be clean, well ventilated and at a temperature of 18–25°C — at lower temperatures the paint will take longer to dry, and at high temperatures it may bubble.
⚠️ Attention: Never use acrylic paint without a hardener for full painting - such a coating will not be resistant to mechanical stress and will quickly peel off. One-part acrylics are only suitable for temporary repairs or parts not subject to abrasion (such as bumper interiors).
2. Preparing the car for painting: sanding and degreasing
The quality of painting depends 70% on surface preparation. Start with body wash using car shampoo (for example, Karcher or Sonax) to remove dirt, grease and road chemicals. Then dry the car and proceed to removing old coating.
If there are chips, rust or swelling on the body, they need to be cleaned down to bare metal using sanders with nozzle P80–P120 or sandpaper. For large areas use orbital sander, for hard-to-reach places - sanding sponges. After stripping, treat the metal rust converter (for example, Zinkor) and apply acid soil for protection against corrosion.
Next comes the stage putties (if there are dents). Apply it in thin layers (no more than 2–3 mm at a time), allowing each layer to dry for 15–20 minutes. After drying, sand the putty sandpaper P240–P320, then P400–P500 for alignment. Be sure to degrease the surface before priming. antisilicon - even microscopic traces of fat will lead to paint peeling.
Remove all plastic and rubber parts (headlights, moldings, seals) or seal them with masking tape|
Strip away rust and old coating down to bare metal|
Apply putty (if necessary) and sand |
Degrease the surface with anti-silicone |
Apply primer in 2-3 layers with intermediate drying|
Sand the primer with P500–P600 sandpaper before painting-->
3. Priming: why it’s important and how to do it right
The primer performs two key functions: improves adhesion paint to the surface and evens out micro-irregularities. Two types of primer are suitable for acrylic painting:
- 🔹 Epoxy primer — creates a strong barrier against corrosion, ideal for bare metal.
- 🔹 Acrylic primer — universal, sands well, suitable for repainting.
Apply primer spray gun with a nozzle 1.5–1.7 mm in 2–3 layers with intermediate drying for 10–15 minutes. The outlet pressure should be 2–2.5 atm. After complete drying (usually 1-2 hours at 20°C), sand the primer sandpaper P500–P600 with water - this will remove shagreen and prepare the surface for painting. Before applying paint, degrease the body again.
⚠️ Attention: If after grinding the primer there are still “bald spots” (bare areas of metal), apply another layer of primer locally. Ignoring this will result in rust showing through the paint within a few months.
Epoxy|
Acrylic|
Acid (phosphating)|
I don’t prime - I paint directly over the putty -->
4. Acrylic painting technology: pressure, distance and speed
Now let's move on to the most important stage - applying acrylic paint. First, mix the paint with hardener and thinner in the proportions specified by the manufacturer (usually 2 parts paint: 1 part hardener: 10-20% thinner). Mix the composition thoroughly and filter through paint filter (190-250 microns) to avoid debris.
Spray gun settings for acrylic:
| Parameter | Meaning | Note |
|---|---|---|
| Outlet pressure | 2.0–2.5 atm | Too high pressure will result in “dry” spraying, low pressure will result in drips. |
| Distance to surface | 20–25 cm | Closer - there is a risk of drips, further - weak adhesion of the paint. |
| Travel speed | 30–40 cm/s | Movements should be smooth, without stopping. |
| Tilt angle | 90° to surface | When painting edges or corners, a 45° tilt is allowed. |
Apply paint to 2–3 layers with intermediate drying for 5–10 minutes. The first layer ("developing") should be thin, almost transparent - it serves as the basis for subsequent ones. Apply the second and third layers more densely, but without excess. The last layer should be the most uniform. If after painting defects are visible (dust, drips), do not try to paint them over immediately - wait until they dry completely and remove them by sanding.
To avoid the “orange peel” effect, hold the spray gun strictly perpendicular to the surface and move at the same speed. Increasing the distance to 25–30 cm when applying the final layer also helps.
5. Applying varnish and drying: how to achieve a mirror shine
Acrylic paint does not require varnishing, but if you want deep shine and extra protection, the varnish is applied 20–30 minutes after the last coat of paint. Use acrylic varnish (for example, PPG D8115 or Sikkens Autoclear) with hardener in a ratio of 2:1. Apply it in 2 layers:
- First layer — “wet on wet” (without drying between passes) to avoid boundaries.
- Second layer - after 5–10 minutes, more densely, to create a glossy surface.
Drying is a critical step. Optimal conditions:
- 🌡️ Temperature: 20–25°C (at lower temperatures, drying will take up to 24 hours).
- 💨 Humidity: no higher than 60% (high humidity leads to clouding of the varnish).
- ⏳ Time: 12–24 hours until completely cured (can be accelerated using IR drying).
After drying, the varnish will be matte - this is normal. The shine will appear after polishing, which can be carried out after 2–3 days. Use abrasive paste (for example, 3M 05974) with polishing machine and a soft circle. Start with pasta P2000, then go to P3000 for final shine.
What to do if the varnish drips?
If you find streaks after drying, don't panic. Wait until the varnish is completely cured (24–48 hours), then carefully cut off the drip petal circle P1200 or sandpaper P1500 with water. After this, polish the area. If the leak is large, you may have to repaint the part.
6. Common mistakes and how to avoid them
Even experienced painters sometimes make mistakes that spoil the result. Here are the most common:
- 🔴 "Dry" spraying — occurs when the pressure is too high or the distance of the spray gun is too far. Leads to a rough surface (“shagreen”).
- 🔴 Drips - the result of too much paint or slow hand movement. Can be removed by sanding after drying.
- 🔴 Dust in the paint - appears if you do not filter the paint or work in a dirty room. Requires repeated sanding and polishing.
- 🔴 Peeling paint - a consequence of poor preparation (non-greased surface, old varnish). Corrected only by repainting.
- 🔴 Color Mismatch - occurs if the shade is chosen incorrectly or the paint is applied in too thin a layer.
To minimize risks:
- Always test the paint on a scrap piece or cardboard.
- Control the temperature and humidity in the room.
- Don't skimp on paint and air filters.
- Use sticky napkin to remove dust before painting.
The most common mistake beginners make is not observing the drying time between coats. If you apply the second coat too early, the solvent will not have time to evaporate and the paint will “boil” (form bubbles).
7. Caring for a freshly painted car
The first two weeks after painting are the most critical. During this period, the paint coating has not yet reached its final strength, therefore:
- 🚫 Do not wash your car by hand or in a car wash (at least 7 days).
- 🚫 Avoid parking under trees (tar and bird droppings will eat away at the varnish).
- 🚫 Do not use wax or polish (they will seal the uncured varnish).
- 🚫 Do not park in direct sunlight (UV rays can cause yellowing).
After 2–3 weeks you can start protective polishing. Use ceramic coating (for example, Ceramic Pro) or liquid glass - they will create an additional barrier from scratches and chemical influences. Wash your car regularly in a contactless way or using two-bucket methodto avoid micro-scratches.
FAQ: Frequently asked questions about acrylic painting
Is it possible to paint with acrylic over old paint without primer?
Technically it is possible, but only if the old coating is in perfect condition (no chips, cracks, peeling) and is compatible in chemical composition. However, without primer, adhesion will be weak and new paint may peel off after 6-12 months. For reliability, it is better to matte the old paint sandpaper P500 and apply primer.
How much does it cost to paint a car with acrylic at a service center?
The cost depends on the class of the car and the amount of work:
- 🚗 Local repairs (bumper, wing) - from 5,000 to 15,000 rubles.
- 🚘 Complete painting of a sedan - from 50,000 to 120,000 rubles.
- 🚙 Premium cars (with metallic or pearl color) - from RUB 150,000.
The price usually includes preparation, priming, painting and polishing. Materials (paint, varnish) may be paid separately.
How long does acrylic paint with hardener take to dry?
Drying time depends on temperature:
- 🌡️ 20°C - “tack-free” after 2–4 hours, complete hardening after 24 hours.
- 🌡️ 15°C - up to 48 hours.
- 🌡️ 25°C and above - 12–16 hours (but there is a risk of paint “boiling”).
It is not recommended to speed up drying with a hairdryer or heater - this may cause cracks or clouding.
Is it possible to mix acrylic paints from different manufacturers?
Not recommended. Different brands use different resin and solvent formulations, which may result in paint delamination or uneven drying. If you had to mix, first check compatibility on a test surface. Also, do not mix acrylic with alkyd or nitro enamels - this is guaranteed to ruin the result.
What is the difference between acrylic and metallic and can they be combined?
"Metallic" is a type of acrylic paint with the addition of aluminum powder, which creates a shimmering effect. The application technology is similar, but “metallic” requires mandatory varnishing, since the metal particles are not protected from oxidation. You can combine them, but only in compliance with the rules:
- First, a base coat (acrylic or metallic) is applied.
- After drying (15-20 minutes) - 2-3 layers of varnish.
For metallics use special hardener (for example, PPG D8110), so that the pigment does not settle to the bottom.