How to spray paint a car correctly: a step-by-step guide with photos and tips

Introduction: When a spray can is the best choice

Spray painting a car is not only a budget-friendly way to update the appearance of the car, but also the only right solution for local repairs. Chips from stones, scratches from branches, rust on arches or minor damage after an accident - in all these cases spray paint becomes salvation. The main advantage of the method: minimal costs (from 300 rubles per cylinder) and the ability to work in a garage without professional equipment.

However, many car owners encounter problems: the paint does not apply evenly, smudges appear, the color does not match the original color, or after a month the coating begins to peel off. The reason is a violation of technology. In this article we will look at every stage spray painting: from choosing paint to final polishing, taking into account the mistakes that 90% of beginners make.

Spoiler: if you think that just spraying paint on a scratch is enough, you are mistaken. Proper spray painting requires 5 mandatory steps, missing at least one of which is guaranteed to ruin the result. But don’t be alarmed: following our instructions, you will get a coating that is indistinguishable from the factory one.

1. Choosing paint: how not to make a mistake with color and type

The first and most common mistake is buying paint by color name (for example, “black metallic” or “white pearl”). Even from the same manufacturer, shades may differ depending on the batch. To avoid tone differences, use color code your car. It can be found:

• 📄 On a plate under the hood (usually on the pillar or inside the door)
• 🔍 In PTS or STS (column “Body color” with digital designation)
• 🖥️ On the manufacturer’s websites by VIN code (for example, paintref.com or autocolorlibrary.com)

If the code is missing, take it with you to the store fuel filler flap — its color usually matches the body. Ask the seller to do computer selection on a spectrophotometer (free at most auto stores).

Choose by paint type:

Paint type	When to use	Pros	Cons
Acrylic	Local repairs, complete painting of parts	Dries quickly, UV resistant	Requires varnishing for gloss
Alkyd	Budget repairs, non-critical areas	Cheaper than acrylic, easy to apply	Takes longer to dry, less durable
Metallic/pearl	For factory colors with effect	Perfect match to the original	Difficult to apply without experience
Matte	Tuning, painting wheels or body parts	Hides defects, stylish look	Difficult to wash, gets dirty quickly

Optimal for most tasks acrylic spray can with varnish included (for example, Motip, Kudo or ABRO). A volume of 400–500 ml is enough to paint one door or bumper. Buy paint and varnish one brand - this guarantees compatibility.

⚠️ Warning: Never use nitro paints for the car! They turn yellow over time and destroy the factory paintwork.

2. Surface preparation: 70% success

The main rule of painting: the quality of preparation determines 70% of the final result. Even the most expensive paint will look terrible if the surface is not cleaned or puttied incorrectly. Let's start with damage assessment:

• 🔍 Scratch to ground - Just sanding and painting is enough.
• 🛠️ Chip with exposed metal - Anti-corrosion treatment is required.
• 🚗 Rust — removal to “living” metal is mandatory.
• 💥 Dent — first straightening, then putty.

Tools for preparation:

Remove rust with P80–P120 sandpaper|Treat with a rust converter (for example, Tsinkar)|Patch deep scratches (Novol, Body)|Sand the putty with sandpaper P240–P320|Degrease the surface (Antisilicone or white spirit)|Apply primer (1–2 layers)|Matt the primer with Scotch Brite P500|-->

Step by step instructions:

1. Washing and degreasing: Wash the part with car shampoo, then wipe antisilicon. Use lint-free wipes - the slightest dust will ruin the result.
2. Rust removal: For small fires use rust converter (apply with a brush, wipe off with a rag after 10 minutes). Remove deep corrosion drill with brush attachment.
3. Putty: Apply polyester putty thin layer (up to 0.5 mm), dry for 20–30 minutes. Sand with water using P240 sandpaper, then P320.
4. Primer: Use aerosol soil (for example, Body 960). Apply 2 thin layers, drying for 10 minutes between coats. Once dry, matte with Scotch Brite P500.

Critical: don't skip the primer! Without it, the paint will lie unevenly and will peel off quickly. The primer also evens out micro-irregularities and improves adhesion.

3. Painting technique: how to avoid smudges and streaks

Now we move on to the most important stage. Main rules:

• 🌡️ Temperature: Paint at +18…+25°C. In hot weather (>30°C), the paint dries too quickly, causing an “orange peel” appearance.
• 💨 Humidity: Optimally 40–60%. When humidity is high, dull spots appear.
• 🌬️ Ventilation: Paint in a garage with an open gate or outside in calm weather.
• ☀️ Lighting: Use a bright lamp (5000 lumens minimum) to see defects.

Step-by-step application technique:

1. Test Spray: Practice on an unnecessary part (for example, an old tank cap). Keep the cylinder at a distance 20–25 cm from the surface.
2. First layer (thin): Apply paint in quick motions from left to right, overlapping each pass by 50%. Hold the balloon perpendicular surfaces.
3. Interlayer drying: Wait 10-15 minutes (see instructions on the bottle). Don't blow dry - it will cause bubbles!
4. Second and third layers: Apply in a cross pattern (first horizontally, then vertically). Each layer should be thinner than the previous one.
5. Final layer: Spray more slowly to ensure the paint goes on evenly. Avoid lingering in one place - this causes leaks.

Typical beginner mistakes:

• 🚫 The distance of the cylinder is too close → leaks.
• 🚫 Arc movements instead of straight lines → uneven coverage.
• 🚫 Painting in the sun → the paint bubbles.
• 🚫 Skip interlayer drying → layers are mixed, gloss is lost.

⚠️ Attention: If bald spots are visible after the second layer, do not apply the third immediately! Wait for it to dry completely (1-2 hours), then carefully touch up the problem areas.

What to do if there are leaks?

If the smudge is fresh (the paint has not hardened), carefully remove it wet brush, soaked in solvent 646. If the paint is dry, sand the defect with P1000-P1500 sandpaper, then polish.

4. Varnishing and drying: the secrets of a glossy shine

The varnish not only adds gloss, but also protects the paint from UV rays and mechanical damage. For a spray can, use two-component acrylic varnish (for example, Motip Clear Lacquer or Kudo 2K). It is more expensive than a one-component one, but 3 times more durable.

Varnish application technology:

1. Before varnishing, wipe the painted surface sticky napkin (for example, 3M Tack Cloth) - this will remove dust.
2. Apply varnish in 2–3 thin layers with interlayer drying for 10 minutes. Keep the cylinder at a distance 25–30 cm.
3. The last layer should be the thinnest - this will prevent the “wave effect”.
4. Dry the varnish at room temperature for 24 hours. You cannot speed up the process with a hairdryer or heater!

Tips for perfect shine:

• 💎 Use soft brush to remove dust between layers.
• 🌪️ Varnish in a room with minimal dust (cover the windows with a damp cloth).
• 🕒 Do not use the car for 3-5 days after painting - the varnish gradually gains strength.

If after drying the varnish turns out matte, the reasons may be as follows:

Problem	Reason	Solution
Matt spots	Moisture ingress during drying	Polish with P2000 abrasive paste
small bubbles	Too thick layer of varnish	Sanding P1500 + revarnishing
"Orange Peel"	High temperature when drying	Polishing with reduction of abrasive (P1500→P3000)

5. Polishing: the final touch

Even perfectly applied paint and varnish require polishing. It removes micro-irregularities, adds depth to color and protects the coating. To work you will need:

• 🔴 Abrasive paste (for example, 3M 09374 for rough polishing, 3M 09376 for the finishing line).
• 🔵 Polishing machine (or a drill with a “plate” attachment).
• 🟢 Foam rubber circles (yellow for abrasive, black for final polishing).
• 🟡 Wax or ceramic coating (for example, Turtle Wax or Ceramic Pro).

Step by step instructions:

1. Wet sanding: Wet the surface and sand using P2000 sandpaper in a circular motion. This will remove minor defects.
2. Rough polishing: Apply abrasive paste to the yellow wheel and polish at medium speed (1200–1500 rpm). Movements - criss-cross.
3. Final polishing: Change the circle to black, use a non-abrasive paste. Speed – 800–1000 rpm.
4. Protection: After polishing, apply wax or ceramic. This will extend the shine for 3-6 months.

If you don't have a polishing machine, you can work manually using polishing cloths (for example, Meguiar’s). However, hand polishing will take 3-4 times longer.

⚠️ Attention: Do not polish your car in the sun! The paste dries instantly, leaving streaks. The optimal temperature for polishing is +15…+25°C.

6. Common mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes. We have collected TOP-5 misses when painting with a spray can and ways to prevent them:

1. The paint is “dusty” (small drops around the painting area)

   Reason: The cylinder distance is too long or the pressure in it is low.

   Solution: Keep the cylinder on 20–25 cm, shake for 2-3 minutes before use. If the paint is old, heat the container in warm water (not higher than 50°C).

2. Color does not match original

   Reason: Incorrect paint code or non-compliance with application technology (for example, metallic was applied without a “base”).

   Solution: Always do a test stain on an unwanted part. For metallics, apply first base layer, then varnish.

3. “Craters” (small pits) appeared

   Reason: Contact of grease or silicone on the surface before painting.

   Solution: Degrease the part thoroughly antisilicon, and not a regular solvent.

4. The varnish turned yellow after a month

   Reason: Use a cheap one-component varnish.

   Solution: Buy only two-component varnishes (for example, Motip 2K). They contain a hardener that prevents yellowing.

5. The paint is peeling off in layers

   Reason: No primer or paint over rust.

   Solution: Completely remove old paint, strip down to bare metal, apply primer and then paint.

If a mistake has already been made, don't panic. Most defects are fixable:

• 🔄 Smudges → sanding P1500 + repainting.
• 🎨 Color Mismatch → painting the entire part (for example, a door or wing).
• 🌀 Matte spots on varnish → polishing with abrasive paste.

7. Care after painting: how to extend the life of a new coating

To make your paint last longer, follow these rules:

• 🚿 First wash: Do not wash your car for 7 days after painting. Use contactless car wash or a soft sponge.
• 🧴 Shampoo wash: Use pH-neutral shampoos (e.g. Karcher or Meguiar’s). Avoid aggressive products such as Fairy.
• 🌞 UV protection: Apply once every 2-3 months wax or ceramic coating. This will prevent the paint from fading.
• 🚗 Parking: Try to park in the shade or use car cover. Direct sunlight accelerates the aging of varnish.
• 🛠️ Minor repairs: If chips appear, touch them up immediately corrector pencil (for example, Touch-Up).

What to do it's impossible:

• 🚫 Wash the car in the first 24 hours after rain (moisture penetrates under the varnish).
• 🚫 Use brushes at a car wash (they scratch fresh varnish).
• 🚫 Park under trees (tar and bird droppings destroy the coating).
• 🚫 Apply polish earlier than 2 weeks after painting.

If you follow these guidelines, your paint job will last. 3–5 years without noticeable deterioration. For comparison: if the rules of care are violated, the paint begins to peel off after 6–12 months.

FAQ: Answers to frequently asked questions

Is it possible to spray paint in winter?

You can paint, but only in a heated room (temperature not lower than +18°C). Outdoors in winter, the paint will apply unevenly due to low temperatures and high humidity. Also note that the drying time will increase by 2-3 times.

If you don't have a garage, use infrared heater, aimed at the part to be painted (but not closer than 1 meter, so as not to overheat the paint).

How many cans do you need to paint a hood?

To completely paint the hood of a medium sized car (e.g. Toyota Camry or VW Passat) you will need:

• Paint: 2–3 cylinders (400 ml each).
• Primer: 1 bottle.
• Varnish: 1–2 bottles.

If the hood has dents or deep scratches, add 1 can of aerosol putty (for example, Body 980).

How to paint plastic parts (bumper, mirrors)?

Plastic requires special preparation:

1. Process the part antistatic (for example, Plast Prime) so that the paint sticks better.
2. Use primer for plastic (for example, Motip Plastic Primer). It improves adhesion.
3. Paint in 2-3 thin coats, as plastic does not absorb paint like metal.
4. After painting, apply flexible varnish (for example, Flexible Clear Coat) so that the coating does not crack due to deformation.

Important: Do not use acetone to degrease plastic - it corrodes the surface!

What is the difference between paint for local repairs and full painting?

Paints for local repairs (for example, Touch-Up or Dr. ColorChip) have:

• Smaller volume (15–50 ml).
• Thinner consistency for precise application with a brush.
• Accelerated drying time (1–2 hours).
• The set includes a brush and varnish pencil.

Such kits are suitable for chips up to 1 cm in size. They are not suitable for painting the entire part (for example, a wing) - you need standard 400-500 ml spray cans.

How to remove shagreen (orange peel) after painting?

Shagreen appears due to too thick a layer of paint or varnish. You can fix it like this:

1. Sand the surface with P1500 sandpaper and water.
2. Apply abrasive paste (for example, 3M 09374) and polish with a machine at medium speed.
3. For deep shagreen, repeat sanding with P1000, then P1500 sandpaper.
4. Secure the result non-abrasive paste (for example, 3M 09376).

If the shagreen remains, it means the varnish is applied too thickly. In this case, only repainting will help.