Matting additive in acrylic paint for cars: a complete guide from selection to application

Introduction: why do we need a matting additive in car enamel?

The matte effect on the car body is not just a fashion statement, but a practical solution for those who value style and functionality. Acrylic paints with matting additives allow you to achieve a uniform deep coating without glare, hiding minor surface defects and giving the car a unique look. However, not everyone knows that Incorrect selection or application of additive can lead to flaking, uneven color or even corrosion.

In this article we will understand how the matting additive in acrylic paints works, what types exist on the market, and What mistakes do beginners most often make? with self-staining. You'll also learn how to properly mix components, apply coating, and care for matte surfaces so you can enjoy the results for years to come.

We will pay special attention compatibility of additives with different types of acrylic paints — not all products are universal, and this is critical for the durability of the coating. If you plan to paint all or part of your car, this information will help you avoid costly alterations.

What is a mattifying additive and how does it work?

A matting additive is a special component that changes the optical properties of acrylic paint, giving it dullness instead of standard gloss. Most additives are based on microsilica particles (SiO₂) or polymer fillers that diffuse light, removing glare.

It is important to understand that the additive does not just “tarnish” the paint, but changes its structure at the micro level. When mixed correctly, it creates a uniform surface roughness, which provides a matte effect. However, if you overdo it with the quantity, the coating may become too porous, which will lead to rapid contamination and difficulties in maintenance.

Modern additives are divided into two types:

• 🔹 Universal - suitable for most acrylic paints (for example, Mipa Mattsystem or PPG D8115).
• 🔹 Specialized — are developed for specific brands of paints (for example, Sikkens Autoclear Mat for systems Sikkens).

Fun fact: Some supplements contain UV filters, which protect the coating from fading. This is especially true for dark colors that are more exposed to the sun.

Types of matting additives: comparison by composition and purpose

Not all additives are the same - their composition and properties depend on the purpose of use. Let's look at the main types on the market:

Additive type	Main component	Benefits	Disadvantages	Examples of brands
Mineral	Silica (SiO₂), talc	High wear resistance, UV resistance	May require more layers for an even effect	3M Matte Additive, Spies Hecker Permahyd Mat
Polymer	Acrylic resins, polyurethanes	Easy to apply, good adhesion	Less resistant to chemical detergents	PPG D8115, Sherwin-Williams Ultra Matte
Hybrid	Combination of minerals and polymers	Balanced properties, durability	Higher price	Mipa Mattsystem, Sikkens Autoclear Mat
Special effects	Metallic pigments + matting agents	Unique visual effects (for example, "liquid metal")	Difficult to apply, requires professional skills	House of Kolor Kosmic Kolors

The choice of additive type depends on base paint, which you are using, and the desired result. For example, for restoration of old cars mineral supplements are often chosen because of their longevity, and for tuning projects - hybrid or special effects.

⚠️ Attention: Some additives contain solvents that can react with paint pigments. Always test compatibility on a small area before painting completely!

How to properly mix matting additive with acrylic paint?

Mixing proportions are key point on which the final result depends. Manufacturers usually indicate recommended ratios on the packaging, but there are general rules:

• 🔧 For light matte finish (satin): 5–10% additive of the paint volume.
• 🔧 For classic matte surface: 15–25%.
• 🔧 For ultra-matte effect (for example, for military style): up to 30–40%, but this requires experience.

Mixing process:

1. Measure out the required amount of paint and additive using measuring cup (not by eye!).
2. Add additive to paint slowly, stirring continuously.
3. Use paint stirrer (for example, DeWalt DWE4887) at low speed to avoid the formation of bubbles.
4. Let the mixture sit for 10-15 minutes before applying - this will help any air bubbles escape.

Measure paint and additive according to instructions|

Mix the ingredients with a mixer at low speed|

Let the mixture sit for 10-15 minutes|

Test viscosity with a viscometer (if available)|

Apply a test coat to the test surface -->

Important: if you use two-component acrylic paint, first mix it with the hardener and then add the matting agent. Otherwise the additive may curdle.

Application technology: from preparation to finishing

Application of matte paint with additive requires more thorough surface preparationthan a glossy finish. Here's the step-by-step process:

1. Body preparation

Matt paint does not forgive mistakes - all defects will be visible. Therefore:

• 🛠️ Remove rust and old paint to bare metal (use sandblasting or sandpaper P80–P120).
• 🛠️ Fill dents and scratches, sand to a perfectly smooth surface (P320–P400).
• 🛠️ Degrease the surface antisilicon (for example, APP W900).
• 🛠️ Apply primer (better epoxy for better adhesion).

2. Paint application

Use spray gun with nozzle 1.3–1.5 mm and pressure 2–2.5 bar. Application technique:

• 🎨 Keep your gun at a distance 20–25 cm from the surface.
• 🎨 Apply paint cross layers (first horizontally, then vertically).
• 🎨 Each layer must be thin — matte paint cannot be applied “wet on wet” like gloss.
• 🎨 Maintain between layers 10–15 minutes (depending on temperature).

3. Drying and polishing

The matte surface does not require polishing, but needs proper drying:

• ⏳ At room temperature: 24 hours until completely cured.
• ⏳ In the drying chamber at 60°C: 2–3 hours.

⚠️ Attention: Do not use wax polishes on matte paint - they will create a greasy shine! Only special products are suitable for care, for example, Sonax Matte Paint Cleaner.

What happens if you apply matte paint on glossy primer?

If the primer has not been sanded to a matte state (P500–P600), the paint will not apply evenly, and after a few months cracks or peeling may appear. This is especially critical for dark colors, where defects are immediately visible.

Top 5 mistakes when working with matting additives

Even experienced painters sometimes make mistakes that spoil the result. Here are the most common:

1. Wrong proportions — too much additive makes the paint porous and unstable to stains.
2. Poor surface preparation — matte paint cannot be applied to glossy primer or uncleaned metal.
3. Using the wrong solvent - some additives are required slow solvents (for example, PPG DT870), otherwise the paint will dry in spots.
4. Application in high humidity — matte paint cannot be painted in damp rooms (optimally: humidity <60%, temperature 18–22°C).
5. No test staining - always test the mixture on a separate sheet of metal!

One of the most critical errors — an attempt to polish matte paint with regular paste. This destroys the effect and leaves streaks. If you need to remove a defect, use microfiber cloth and a special cleaner for matte surfaces.

Caring for matte paint: how to extend the life of the coating?

Matte surface requires special care, as it is more susceptible to dirt and scratches. Here are the basic rules:

• 🚿 Washing: Use only contactless cleaning products (for example, Karcher Matte Car Shampoo) and soft sponges.
• 🧴 Protection: Apply ceramic coating for matte paint (for example, Ceramic Pro Matte) once every 6–12 months.
• 🚫 Prohibited: Wax, silicone polishes, abrasive cleaners.
• 🔧 Scratch repair: Use retouching pencil with a matte texture (for example, TouchUp Direct).

Important: if there are signs on the matte paint water spots (for example, from rain), they must be removed immediately with a special cleaner. Unlike gloss, a matte surface absorbs dirt, and over time, stains can become permanent.

Comparison of popular brands of mattifying additives

There are dozens of supplements on the market, but we have selected 5 most reliable according to reviews from professionals:

Brand and model	Type	Recommended proportion	Price for 1 l (approx.)	Features
Mipa Mattsystem	Hybrid	10–30%	~3 500 ₽	Suitable for all acrylic systems, UV resistant
PPG D8115	Polymer	15–25%	~4 200 ₽	Easy to apply, ideal for dark colors
Spies Hecker Permahyd Mat	Mineral	5–20%	~3 800 ₽	High wear resistance, suitable for commercial vehicles
Sikkens Autoclear Mat	Hybrid	20–40%	~5 000 ₽	Premium quality, used in car dealerships
3M Matte Additive	Mineral	10–25%	~3 200 ₽	Budget option, good for small jobs

When choosing, pay attention not only to the price, but also to compatibility with your paint. For example, Sikkens Autoclear Mat works perfectly with systems Sikkens, but may conflict with other brands of paint.

FAQ: Frequently asked questions about mattifying additives

Is it possible to add a matting additive to already thinned paint?

No, this will lead to an uneven effect. The additive must be mixed with base paint before adding solvent and hardener. If the paint has already been diluted, it is better to prepare a new portion.

How many layers of matte paint should I apply?

Usually enough 2–3 layers. The first layer may lie unevenly - this is normal. The second and third layers level the coating. The main thing is to let each layer dry 10–15 minutes.

Is it possible to paint only part of the car with matte paint?

Yes, but you need to consider two points: 1) border between matte and glossy surface will be visible, so it is better to do it along the natural lines of the body (for example, along the wheel arch); 2) use transition varnish for a smooth transition.

How to remove gloss if you have gone too far with the additive?

If the paint turns out too matte and “dusty”, you can lightly polish it abrasive paste with grit 3000–5000 (for example, Farecla G3). But you need to polish carefully, without pressure, so as not to spoil the texture.

Is the matting additive suitable for powder paint?

No, mattifying additives are intended only for liquid acrylic paints. For powder paint, special matte powder compositions (for example, AkzoNobel Interpon Matte).