What paint is used for road markings: types, composition and application rules according to GOST

Bright white lines on the asphalt, arrows at intersections, zigzags at bus stops - all this road markings, without which it is impossible to imagine modern roads. But few people think about what lies behind these seemingly simple stripes. In fact, this is the result of complex technologies, where the key role is played by special paint, designed taking into account extreme loads: from temperature changes to constant abrasion from transport wheels.

The choice of paint for markings is not just a matter of aesthetics, but security issue. Poor quality coating quickly wears out and loses visibility in rain or snow, which leads to accidents. There are strict standards in Russia: GOST 52575-2021 regulates not only the color and width of the lines, but also the composition of the paint, its reflective properties and durability. At the same time, different types of materials are used for different conditions: from budget acrylic paints to durable thermoplastics.

In this article we will look at:

• 🔬 What types of paints used for road markings and their key differences.
• 📜 GOST requirements to the composition and properties of the markings (including the retroreflectivity coefficient).
• 💰 Cost comparison and service life: what is more profitable for a private yard and what is more profitable for a highway.
• ⚠️ Application errors, which reduce the service life of markings by 2–3 times.

1. Main types of paints for road markings

All marking materials are divided into three large groups, each of which has its own pros and cons. The choice depends on the budget, traffic volume and climatic conditions.

Acrylic paints - the most common and budget option. They are an aqueous dispersion of acrylic resins with the addition of pigments (usually titanium dioxide for white or iron oxide for yellow). The main advantage is ease of application: the paint can be sprayed using a pneumatic sprayer or applied with a roller. However service life Such coatings rarely last more than 1–2 years, especially on busy roads.

Thermoplastic paints - this is no longer paint in the usual sense, but a molten mass of synthetic resins, plasticizers and fillers (chalk, quartz sand). Apply using hot method at temperature 180–220°C, which provides strong adhesion to asphalt. This marking holds 3–5 years and can withstand loads of up to 50 million wheel passes. The downside is the high cost of application equipment.

Third category - cold plastics (for example, Polyplast or RoadMark). These are two-component compositions based on polyurethane or epoxy resins, which harden when mixed with a hardener. They combine the durability of thermoplastic (up to 4 years) with the ease of application of acrylic. Often used for markings with increased requirements for wear resistance (for example, in supermarket parking lots or gas stations).

2. GOST 52575-2021 requirements for road markings

Valid in Russia GOST 52575-2021 “Materials for road markings”, which sets strict standards for all types of paints. Key parameters to pay attention to:

• 🎨 Color range: white (for most lines), yellow (for prohibitory markings, for example, 1.4 — “Stopping is prohibited”), red and blue (for special zones). Shades are strictly regulated by RAL.
• 🔦 Retroreflectivity coefficient (RL): no less 200 μd lux⁻¹ m⁻² for white materials and 120 - for yellow ones. This guarantees the visibility of markings at night.
• ⏳ Service life: for acrylic paints - at least 12 months, for thermoplastics - 36 months.
• 🌡️ Temperature resistance: the marking must withstand from -40°C up to +60°C without cracks or peeling.

⚠️ Attention! If the markings are applied to concrete covering (for example, on bridges or overpasses), the requirements for adhesion (adhesion) increase. In this case, acrylic paints are often supplemented with polyurethane-based primers.

Parameter	Acrylic paint	Thermoplastic	Cold plastic
Service life, years	1–2	3–5	3–4
Retroreflectance coefficient RL, mkd lux⁻¹ m⁻²	150–250	300–500	250–400
Application temperature, °C	+5…+30	180–220	+10…+25
Cost per 1 kg, rub.	150–300	400–800	600–1200

3. Paint composition: what affects durability?

The quality of the marking depends not only on the type of paint, but also on its components. Let's look at the key ingredients:

Binder - the basis of the paint, which determines its strength. In acrylic paints these are acrylic resins, in thermoplastics they are a mixture of bitumen and synthetic polymers (for example, ethylcellulose or polyester resins). Cold plastics contain epoxy or polyurethane components, which, after hardening, form a durable film.

Pigments add color and reflectivity. For white markings use TiO₂ (titanium dioxide), for yellow - Fe₂O₃ (iron oxide). Important: cheap paints are often diluted with chalk, which reduces brightness and service life.

Fillers (quartz sand, glass microspheres) increase wear resistance and reflectivity. For example, in thermoplastics the proportion of sand can reach 30–50%. Microspheres (diameter 0.1–0.8 mm) scatter the light from the headlights, making the markings visible at night.

⚠️ Attention! If the paint contains kaolin (cheap clay), this is a sign of low quality. This material quickly wears out and loses color when exposed to ultraviolet radiation.

Why do markings glow in the dark?

The reflective effect is achieved through glass microspheres, which work on the retroreflector principle: headlight light hits the sphere, is reflected from its inner surface and returns back to the source. The higher the concentration of microspheres (optimally 20–30% by weight), the brighter the markings in the dark.

4. How road markings are applied: technologies and equipment

The application method directly affects the durability of the marking. Let's look at the main technologies:

• 🎨 Cold application (for acrylic and cold plastics): paint is sprayed through pneumatic sprayer or applied extruder. Suitable for small volumes (for example, marking in the yard).
• 🔥 Hot application (for thermoplastics): the material melts in a boiler at 200°C and is applied by a special machine with a dispenser. Requires professional equipment, but ensures maximum adhesion.
• 🤖 Prefabricated products: ready-made strips or tiles (e.g. 3M Stamark), which are glued to asphalt. Used for temporary markings or in difficult areas (for example, arrows at intersections).

Thermoplastic is used to apply marking machines (for example, Graco Linelazer or BORUM A/S). They are equipped with a heating and dosing system for the material, as well as a mechanism for introducing glass microspheres. The cost of such equipment starts from 1.5 million rubles., therefore, contractors are often invited for one-time work.

Asphalt temperature when applied it should be no lower +10°C (for acrylic) and not higher +40°C (so that the thermoplastic does not spread). In hot weather, markings are applied early in the morning or in the evening.

5. Comparison of paints: what to choose for different tasks?

The choice of material depends on traffic intensity, climate and budget. Here are recommendations for typical cases:

For a private yard or cottage:

• ✅ Suitable acrylic paint (for example, Tikkurila Temaroll or Novbytkhim).
• ✅ Service life: 1–2 seasons.
• ✅ Pros: low price (200–300 rub./kg), ease of application (can be done with a brush).

For parking a supermarket or gas station:

• ✅ Optimal cold plastic (for example, Poliplast-Ultra).
• ✅ Service life: 3–4 years.
• ✅ Pros: withstands the load from trucks, resistant to fuels and lubricants (gasoline, oil).

For city streets and highways:

• ✅ Only thermoplastic (for example, RoadMark Premium or Bitumast-Thermo).
• ✅ Service life: 4–5 years.
• ✅ Pros: maximum wear resistance, retroreflection up to 500 μd lux⁻¹ m⁻².

⚠️ Attention! If the markings are applied to new asphalt, wait at least 30 days — during this time, light fractions will evaporate from the bitumen, and paint adhesion will improve. Otherwise, the markings may peel off after a few months.

6. Common mistakes when applying markings

Even expensive paint will not last long if the application technology is violated. Here are typical mistakes and their consequences:

• 🌧️ Application on wet asphalt: Water under the paint causes peeling. The markings will “swell” in 1–2 months.
• 🔥 Incorrect thermoplastic temperature: if overheated higher 220°C, the material will lose elasticity and crack.
• 🧹 No surface preparation: Dust and dirt reduce adhesion by 30–50%.
• 🌡️ Application of acrylic at temperatures below +5°C: the paint does not polymerize and remains sticky.

Another critical error - savings on microspheres. If their concentration is lower 15%, the markings will stop glowing at night within six months. In cheap paints they are often used ceramic instead of glass microspheres - they reflect light worse.

7. How to check the quality of the markup?

If you order markings from a contractor, here's how to evaluate their quality before payment for work:

• 👁️ Visual inspection: the lines must be smooth, without drips or gaps. Marking width 1.1 (solid line) - 10–15 cm, 1.5 (intermittent) - 10 cm.
• 📏 Layer thickness: for acrylic - 0.3–0.5 mm, for thermoplastic - 1.5–2.5 mm. You can check with a caliper.
• 🔦 Retroreflection: at night, in the light of headlights, the markings should be visible behind 100–150 m.
• 🧪 Adhesion test: try prying the edge of the marking with a knife. If it comes off in a layer, the technology is broken.

For official verification you can order laboratory tests according to GOST:

• Measuring the retroreflectivity coefficient (device retroreflectometer).
• Wear resistance test (simulation of 1 million wheel passes per abrasive wheel).
• Testing resistance to chemicals (salt, gasoline).

FAQ: Frequently asked questions about road markings

❓ Is it possible to apply markings to fresh asphalt?

No! New asphalt contains uncured bitumen fractions that interfere with adhesion. Minimum holding period - 30 days (in hot climates - up to 60 days). The exception is special primers (for example, Bitumast Primer), which can be applied through 7–10 days.

❓ Why do markings turn yellow over time?

Yellowness appears due to pigment degradation under the influence of ultraviolet light. Cheap paints use unstable dyes that fade in 6–12 months. To avoid this, choose paints with UV stabilizers (for example, Tikkurila Temaroad).

❓ How much does it cost to mark a 10×20 m parking lot?

The cost depends on the type of paint and complexity of the work:

• Acrylic markings: 15–25 thousand rubles. (including asphalt cleaning).
• Cold plastic: 30–50 thousand rubles.
• Thermoplastic: 50–80 thousand rubles. (requires a vehicle with a boiler).

Additionally, a primer may be needed (+5–10 thousand rubles.) and installation of road signs.

❓ Is it possible to make the markings yourself?

Yes, but only acrylic paint or aerosol cans (for example, Kudo Road Marking). To do this:

1. Clean the asphalt with a wire brush.
2. Apply primer (eg Bitumast-Grunt).
3. Mark the lines with chalk or painter's cord.
4. Apply paint with a roller or spray in 2 layers.

⚠️ Limitation: self-marking does not comply with GOST and not suitable for public roads (private areas only).

❓ Why do markings get erased over the winter?

Main reasons:

• Usage cheap acrylic paint without microspheres.
• Impact de-icing reagents (salt, chlorides).
• Application to untreated or wet asphalt.
• Mechanical impact snow removal equipment.

Solution: for northern regions, choose thermoplastic with modifiers (for example, RoadMark Arctic), resistant to frost and reagents.