Epoxy paint: an essential anti-corrosion protection in bodywork

Mar 4, 2025

Epoxy paint is widely used in the automotive body sector for its excellent adhesion, protection, and chemical resistance properties. Thanks to its two-component formulation combining an epoxy resin and a hardener, it creates a particularly robust film capable of durably protecting metal surfaces against corrosion and external aggressions.

Used both in automotive restoration and body repair, epoxy technology is now one of the best solutions to durably prepare a surface before applying a filling primer, a matte base, or a complete finish.

What is epoxy paint?

An epoxy paint is a two-component coating composed of a resin and a hardener that chemically react when mixed. This reaction creates an extremely adhesive and resistant layer, particularly suited for metal substrates.

In bodywork, epoxy products are mainly used as anti-corrosion primers or protective coatings on parts heavily exposed to moisture, road spray, or chemical attacks.

Why use epoxy paint in bodywork?

Epoxy technology offers several advantages particularly sought after by automotive repair professionals.

Exceptional anti-corrosion protection: effectively isolates metal from moisture and oxygen.
Excellent adhesion: compatible with steel, aluminum, galvanized steel, and many metal substrates.
High chemical resistance: withstands fuels, oils, solvents, and road contaminants.
Durable protective barrier: ideal for vehicles subjected to harsh conditions.
Compatible with many paint systems: primers, bases, and automotive clears.

The main applications of automotive epoxy paint

Epoxy products are used in many automotive bodywork and restoration operations.

Protection of bare sheets after stripping.
Restoration of vintage vehicles.
Protection of chassis and underbodies.
Repair of body panels.
Engine compartments.
Rims and mechanical parts.
Metal parts exposed to corrosion.

They often constitute the first layer applied directly on the metal before finishing steps.

The different types of epoxy paints

Depending on the applications, several epoxy technologies are available on the market.

Epoxy primer: used as an anti-corrosion primer and bonding layer.
Filling epoxy: combines protection and filling power.
Industrial epoxy: designed for heavily stressed equipment.
High chemical resistance epoxy: used on areas exposed to hydrocarbons and solvents.
Epoxy coating for chassis: specially developed for automotive restorations.

How to apply epoxy paint?

Substrate preparation

The quality of preparation directly influences the performance of the epoxy system.

Stripping or sanding of the substrate.
Removal of corrosion traces.
Complete degreasing.
Thorough dust removal.

The substrate must be perfectly clean before application.

Product mixing

Epoxy paints require precise mixing between the resin and the hardener. The ratios indicated by the manufacturer must be respected to achieve the expected mechanical and chemical performance.

Application

Application is generally done by spray gun to obtain a uniform and regular layer. Depending on the products, one or more coats may be necessary to reach the recommended thickness.

Evaporation and recoating times must be respected according to the technical data sheets.

Advantages of epoxy paint

Very high corrosion resistance.
Excellent adhesion.
Durable metal protection.
Good chemical resistance.
Compatible with modern automotive paint systems.
Ideal for restoration and renovation work.

Limitations of epoxy paint

Despite its many advantages, epoxy paint has some limitations.

Sensitivity to UV when exposed directly without an appropriate finish.
Drying time generally longer than some modern primers.
Strict adherence to mixing ratios is necessary.
Application requiring a perfectly prepared substrate.

For visible parts exposed to sunlight, an appropriate finish (base + clears or topcoat paint) is generally recommended to ensure long-term aesthetic stability.

How to choose an epoxy primer or paint?

The choice mainly depends on the substrate, the level of corrosion, the paint system used, and the constraints to which the part will be exposed.

Steel, aluminum, or galvanized substrate.
Desired level of corrosion protection.
Type of repair or restoration.
Compatibility with subsequent layers.
Vehicle usage conditions.

Manufacturers' technical data sheets allow you to select the most suitable solution for each intervention.

Why use epoxy during automotive restoration?

When restoring a vintage vehicle, epoxy paint often provides the best available protection against corrosion. Applied directly to the metal after stripping, it creates a durable barrier that secures the preparation work before the finishing stages.

Thanks to its technical performance, epoxy is now considered an essential reference for bodywork and automotive restoration professionals wishing to ensure the longevity of their repairs.

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Peinture mate voiture : guide complet pour une finition haut de gamme

Matte Car Paint: Complete Guide for a Premium Finish

Jun 22, 2026

Matte paint has established itself as a benchmark in the world of modern bodywork. Appreciated for its sober, elegant, and distinctive appearance, it allows for premium finishes that are particularly sought after on sports cars, high-end vehicles, and special editions. Unlike traditional glossy finishes, the matte effect absorbs more light and offers a unique visual result. However, this finish requires particular technical expertise during application as well as adapted maintenance methods to sustainably preserve its original appearance. What is automotive matte paint? In bodywork, a matte finish is generally achieved through the use of a low gloss clearcoat or semi-matte clears applied over a color base. The level of gloss is measured in Gloss Units (GU) and can vary depending on the desired effect. This technology allows reproducing the original finishes of many car manufacturers while offering a contemporary look that is especially appreciated in the automotive sector. Differences between matte, satin, and glossy paint Glossy finish: strong light reflection, deep and very bright appearance. Satin finish: a compromise between matte and glossy with slight light reflection. Matte finish: very low light reflection for a sober, elegant, and modern look. The choice mainly depends on the desired aesthetic effect and the manufacturer’s specifications when it comes to bodywork repairs. Advantages of matte paint High-end appearance: elegant and contemporary finish highly appreciated on premium vehicles. Customization: allows visually differentiating a vehicle. Unique visual effect: highlights the lines and volumes of the bodywork differently than a glossy finish. OEM compliance: essential for repairing certain vehicles originally equipped with a matte finish. Wide range of finishes: from discreet semi-matte to ultra-matte. Technical characteristics of a matte finish The main characteristic of a matte finish lies in its low light reflection. Unlike glossy clears, low gloss clearcoat contains matting agents that diffuse light and reduce the mirror effect. This specificity requires strict application conditions. Variations in thickness, dilution differences, or temperature changes can alter the final gloss level. That is why manufacturers provide precise procedures to follow to ensure optimal reproducibility. How to apply matte paint in bodywork? Achieving a uniform result requires rigorous preparation and adherence to the manufacturer’s technical recommendations. Surface preparation: cleaning, degreasing, and sanding adapted to the paint system used. Primer application: to even out the surface and optimize adhesion. Color base application: following usual automotive painting procedures. Application of low gloss clearcoat or semi-matte clears: respecting mixing ratios, spray pressure, and evaporation times. Controlled drying: according to the manufacturer’s technical guidelines. Consistency in application is essential to avoid gloss differences or marbling effects. How to maintain matte paint? Matte finishes require specific maintenance to preserve their original appearance. Recommended manual washing: with shampoos adapted to matte finishes. Avoid polishing products: polishes and glossy restorers can permanently alter the matte appearance. Use specific cleaners: designed for matte surfaces. Appropriate protection: certain waxes and ceramic protections are specially developed for matte finishes. Quick intervention: promptly remove contaminants such as resin, bird droppings, or tar. Challenges of repairing matte paint Repairing a matte finish is generally more complex than a glossy finish. During touch-ups or blending, the gloss level must remain perfectly uniform to avoid any visual difference between the repaired area and the rest of the vehicle. This requirement demands suitable products, quality equipment, and perfect mastery of painting techniques. Why choose a matte finish? Matte paint meets the growing demand in the automotive market for vehicles with distinctive and premium design. It allows achieving a modern look while enhancing the bodywork lines. Whether for OEM repair, customization, or complete renovation, the matte finish is now an essential solution for bodywork professionals wishing to offer high value-added services. ```

Comment bien choisir son pistolet de peinture carrosserie ?

How to properly choose your auto body painting spray gun?

Aug 25, 2025

The paint spray gun is the ultimate weapon for the auto body painter. A true extension of the hand, it determines the quality of the finish, the comfort of application, and even the product consumption. With the multitude of models available, it's hard to know where to start. Which brands should be prioritized? Which nozzle should be chosen according to the stage (primer, base, clears)? And above all, how to combine performance and budget without making a mistake? At Colorbox, we have selected three essential references that appeal to professional body shops: SATA, IWATA, and DEVILBISS. Each has its strengths, style, and audience. Let's discover together how to choose the spray gun that suits your needs. The spray gun, a decisive tool in the painting process In a body shop, precision is as important as productivity. The choice of spray gun depends on several criteria: The type of product applied: primer, matte base, or clears The cap technology: HVLP for bases, RP for clears The nozzle diameter: which varies according to the viscosity of the product 👉 For matte bases, an HVLP cap with a fine nozzle 1.2 to 1.3 mm is recommended.👉 For clears, an RP cap with a nozzle 1.3 to 1.4 mm.👉 For primers, a large nozzle 1.8 mm is needed, suitable for thick products. The star brands of spray guns: our selection SATA – The German elite SATA is the epitome of elitism. Manufactured in Germany, their spray guns combine robustness and precision. But SATA goes further: the brand regularly launches limited series with exclusive designs, which have become true collector's items. Some painters keep them as small treasures. The latest model, the SATAjet X, incorporates an innovative air labyrinth process. Thanks to a buffer reservoir, it eliminates latency and ensures a perfectly regular airflow. The result: a smooth and even application. The only downside is that this model is slightly more fragile than its predecessors, but SATA is already working to enhance its reliability. IWATA – The Japanese finesse IWATA embodies Japanese precision. Known for the fineness of its spray, the brand allows for paint savings thanks to extremely fine atomization. Their flagship model, the WS400, is a global reference. A small downside: IWATA has chosen to limit its online distribution. Finding these models can be challenging, but when you do, the quality is undeniable. DEVILBISS – The favorite for value for money DEVILBISS, a historic English brand, appeals with its excellent balance between performance and accessibility. For workshops looking for a reliable spray gun without breaking the bank, the DEVILBISS SLG 620-18 is a must-have. Its 1.8 mm nozzle makes it the perfect ally for primers, ensuring an even coat and excellent coverage. It's our favorite for value for money at Colorbox. The professional opinion from Colorbox “When comparing SATA, IWATA, and DEVILBISS, it quickly becomes clear that each brand has its own DNA. SATA shines with its exclusivity and collector designs. IWATA embodies precision and product economy. DEVILBISS remains the pragmatic solution, combining performance and budget.” The final choice therefore depends on your daily use, your paint volumes, and your level of aesthetic requirement. Quick checklist for choosing your spray gun For matte bases: HVLP – nozzle 1.2 to 1.3 mm For clears: RP – nozzle 1.3 to 1.4 mm For primers: large nozzle 1.8 mm Tight budget: DEVILBISS SLG 620-18 Seeking exclusivity: SATA limited series Maximum precision: IWATA WS400 FAQ: your frequently asked questions Which spray gun for starting in auto body work?A DEVILBISS model, like the SLG 620-18, is ideal for starting out: reliable, versatile, and affordable. What is the difference between HVLP and RP?HVLP (High Volume Low Pressure) maximizes product transfer and limits overspray, perfect for bases. RP (Reduced Pressure) offers better flow and a faster rate, ideal for clears. Is a separate spray gun needed for each product?Yes, it is preferable. Nozzles and caps react differently depending on viscosity. A thick primer requires a different spray gun than a fine base. Is SATA really better?SATA is a reference, notably due to its innovations and manufacturing quality. However, its high price often reserves it for premium workshops. In summary Choosing an auto body painting spray gun is not just a matter of brand. It is a strategic choice that directly impacts productivity and finish quality. SATA plays the card of innovation and prestige, IWATA that of finesse and precision, while DEVILBISS remains the champion of value for money. At Colorbox, we advise you to build your spray gun collection according to your work stages: an HVLP for the base, an RP for the clears, a 1.8 mm model for the primer. And if you are looking for a reliable option to start with, our recommendation remains the DEVILBISS SLG 620-18.

Peinture de capot voiture : tout savoir pour une réparation durable

Car Hood Paint: Everything You Need to Know for a Lasting Repair

Aug 6, 2025

The hood is one of the most exposed parts of a vehicle. Subjected daily to stone chips, weather, UV rays, and external aggressions, it is often one of the first body parts to require painting intervention. Whether it is a localized repair, a complete renovation, or a hood replacement, the quality of preparation and products used is essential to ensure a durable finish perfectly matched to the vehicle’s original color. Why repaint a car hood? Several situations may require repainting the hood: Deep scratches or stone chip impacts. Degradation of the clears due to UV exposure. Corrosion or appearance of rust spots. Repair after a collision or accident. Replacement of the hood with a new part. Aesthetic customization of the vehicle. A properly executed intervention not only restores the vehicle’s aesthetics but also provides long-lasting protection against corrosion and premature aging. Different materials of car hoods The choice of preparation and paint products depends notably on the material composing the hood. Steel hood: the most common on passenger vehicles, robust and economical. Aluminum hood: lighter and naturally corrosion-resistant. Fiberglass hood: used on some sports or classic vehicles. Carbon fiber hood: particularly light and rigid, found on some high-performance vehicles. Each material requires specific preparation methods and primer systems to ensure optimal adhesion of the paint layers. Steps to repaint a car hood Surface preparation Preparation is a crucial step in achieving a successful paint job. Complete cleaning of the surface. Degreasing with a suitable cleaner. Sanding of old paint layers or the surface. Repair of any defects using body putty. Thorough dust removal before applying products. Primer application The primer helps to even out the surface, improve paint adhesion, and ensure a smooth finish. Depending on the repair, different types of primers can be used: filling, epoxy, wet-on-wet, or aluminum-specific. Paint application The paint is generally applied with a spray gun in a paint booth or a perfectly controlled environment. Several thin layers are preferable to one heavy layer to achieve a uniform color and optimal flow. Waterborne and solvent-based systems used in professional bodywork today allow for precise reproduction of the original colors from automotive manufacturers. Clears application For two-coat systems, the clears provide the final protection as well as the desired aesthetic appearance. It notably improves: UV resistance. Weather resistance. Chemical resistance. Protection against micro-scratches. Depth and gloss of the finish. What equipment to use to paint a hood? Quality repair requires appropriate equipment: Professional spraygun. Compressor with air filtration. Sandpapers of various grits. Body sander. Preparation degreaser. Masking tape and protective films. Primers, bases, and clears suitable for the substrate. Personal protective equipment. Following manufacturers’ technical recommendations is essential to ensure repair quality and durability. How much paint for a hood? Consumption varies depending on vehicle size, color, and paint system used. For a standard-sized hood, you generally need to plan for: Between 250 and 500 ml of ready-to-use base color. Between 250 and 500 ml of ready-to-use clears. The amount of primer needed depends on the condition of the substrate. Low-opacity shades, pearlescent colors, or certain reds may require more product to achieve perfect coverage. Why repair a damaged hood quickly? A deep scratch, chip, or area where the clears are damaged can quickly lead to substrate deterioration. On metal parts, moisture and contaminants promote corrosion that can spread beneath the paint layers. A quick intervention helps limit future repairs while preserving the vehicle’s appearance and value. Main hood repair techniques Polishing: to correct certain superficial clears defects. Localized touch-up: suitable for small chips or scratches. Putty repair: for minor dents or deformations. Complete hood painting: when damage is extensive or spread over the entire surface. Hood replacement: in cases of significant deformation or severe impact. Choosing quality paint for a lasting result The success of a hood repair depends as much on the quality of the application as on the products used. Modern paint systems now allow for invisible blends, excellent resistance to external aggressions, and perfect reproduction of manufacturer colors. Whether for post-accident repair, refurbishment, or customization, using suitable professional products ensures a durable finish that meets the demands of modern bodywork. ```