Primax Regal Universal Synthetic Undercoat
Primax Synthetic Undercoat – Smooth & Adhesive Base for Professional Topcoat Finishes
A professional paint finish starts with the right preparation underneath. Uneven surfaces, minor imperfections, and poor adhesion at the base can affect the appearance and performance of the final coating.
Primax Synthetic Undercoat is a fast-drying alkyd resin-based undercoat formulated to provide excellent filling and adhesion properties. It helps create a smooth and properly prepared base before application of compatible finishing coats.
The undercoat is designed to be easily sandable after overnight air drying, allowing painters and applicators to refine the surface before applying the final finish. It can be over-coated with synthetic enamel, hammer tone, metallic finishes, and automotive lacquers.
Why Use Primax Synthetic Undercoat?
The final appearance of a coating system depends greatly on the condition of the surface underneath it. A suitable undercoat helps improve surface uniformity, fills minor imperfections, and provides a compatible foundation for the finishing coat.
Primax Synthetic Undercoat combines filling, adhesion, sanding, and drying properties in one preparation coating, making it suitable for a variety of decorative and protective finishing systems.
Key Benefits
- Fast-Drying Formula: Touch dry in approximately 1–2 hours under normal conditions.
- Excellent Filling Properties: Helps create a more uniform base before finishing.
- Strong Adhesion: Supports proper bonding of compatible coating systems.
- Easy Sanding: Designed to be easily sandable after overnight air drying.
- Versatile Topcoat Compatibility: Suitable beneath synthetic enamel, hammer tone, metallic finishes, and automotive lacquers.
- Multiple Application Methods: Can be applied by brush, roller, or spray.
- Practical Coverage: Provides approximately 9–11 m²/litre/coat under normal conditions.
- Multiple Base Colors: Available in Light Grey, White, Pink, and Green.
A Better Base for the Final Finish
Primax Synthetic Undercoat is designed as a preparation layer beneath compatible topcoats. Its filling properties help improve the uniformity of the surface, while its adhesion properties support the subsequent coating system.
Once the undercoat has been allowed to air dry overnight, it can be sanded to further refine the surface before application of the selected finishing coat.
Compatible Topcoats
According to the supplied product information, Primax Synthetic Undercoat can be over-coated with:
- Synthetic Enamel
- Hammer Tone
- Metallic Finishes
- Automotive Lacquers
The selected finishing system should be applied only after the undercoat has dried and been properly prepared for recoating.
Available Colors
Primax Synthetic Undercoat is available in:
- Light Grey
- White
- Pink
- Green
The appropriate undercoat color can be selected according to the requirements of the overall coating system and intended finishing coat.
Product Specifications
| Property | Details |
|---|---|
| Product Name | Primax Synthetic Undercoat |
| Product Type | Fast-Drying Synthetic Undercoat |
| Pack Sizes | 0.91 Litres, 3.64 Litres |
| Color Range | Light Grey, White, Pink, Green |
| Pigment | Inert Filler and Lightfast Pigments |
| Binder | Alkyd Resin |
| Solvent | Mineral Turpentine |
| Flash Point | 34°C |
| Touch Dry | 1–2 Hours |
| Recoat Time | 4–6 Hours |
| Application Methods | Brush, Roller, Spray |
| Coverage | 9–11 m²/litre/coat under normal conditions |
| Brush / Roller Thinning | 10–25% |
| Conventional Spray Thinning | 30–40% |
| Spray Recommendation | Suitable for conventional spray through most equipment |
| Cleanup | Mineral Turpentine immediately after use |
Available Pack Sizes
Primax Synthetic Undercoat is available in:
- 0.91 Litres
- 3.64 Litres
The required quantity will depend on the total area, surface condition, number of coats, application method, and actual material consumption.
Surface Preparation
Proper preparation is important for achieving reliable adhesion and a smooth final finish.
- Remove dust, dirt, grease, oil, and other surface contamination.
- Remove loose, flaking, or poorly adhering previous coatings where necessary.
- Sand rough and uneven areas where required.
- Repair significant surface defects before applying the undercoat.
- Remove sanding dust thoroughly.
- Ensure the surface is sound, stable, and suitably dry before application.
The exact preparation procedure will depend on the substrate and the complete coating system being used.
Application Methods
Primax Synthetic Undercoat can be applied using:
- Brush
- Roller
- Spray
For conventional spray application, the supplied product information states that application is satisfactory through most suitable equipment.
Thinning Guide
| Application Method | Recommended Thinning |
|---|---|
| Brush / Roller | 10–25% |
| Conventional Spray | 30–40% |
Follow the specified dilution range for the selected application method. The supplied product information lists Mineral Turpentine as the solvent, but does not separately identify the thinning medium in the thinning section, so product-specific technical instructions should be followed when preparing the paint for application.
General Application Guidance
- Inspect the surface and complete all necessary preparation.
- Remove dust, oil, grease, loose coatings, and contamination.
- Mix Primax Synthetic Undercoat thoroughly before application.
- Adjust the material according to the stated thinning range for the selected application method.
- Apply an even coat using brush, roller, or spray.
- Maintain consistent application across the prepared surface.
- Allow the undercoat to dry adequately before recoating.
- Where sanding is required, allow overnight air drying before sanding.
- Sand the surface to achieve the required smoothness.
- Remove all sanding dust before applying the selected compatible topcoat.
- Clean application equipment immediately after use.
Easy Sanding After Overnight Air Drying
Primax Synthetic Undercoat is formulated to be easily sandable after overnight air drying.
This allows the applicator to refine the preparation layer before the finishing coat is applied. Sanding can help smooth minor surface irregularities and create a more uniform foundation for the final decorative coating.
After sanding, remove all dust thoroughly before applying the next coating.
Drying & Recoat Time
Under normal conditions, Primax Synthetic Undercoat has the following stated drying times:
- Touch Dry: 1–2 hours
- Recoat: 4–6 hours
Actual drying time may vary depending on temperature, humidity, ventilation, film thickness, surface condition, and application method.
Although the stated recoat period is 4–6 hours, the supplied product information specifically recommends overnight air drying before sanding.
Coverage
The stated coverage of Primax Synthetic Undercoat is:
9–11 m²/litre/coat under normal conditions.
Actual coverage may vary depending on surface texture, porosity, application method, thinning level, coating thickness, and material loss during application.
Equipment Cleanup
Clean brushes, rollers, spray equipment, mixing containers, and other application tools with Mineral Turpentine immediately after use.
Prompt cleaning helps prevent coating material from drying on or inside application equipment.
Common Application Mistakes to Avoid
- Poor Surface Preparation: Dust, grease, loose coatings, and contamination can affect adhesion and final finish quality.
- Incorrect Thinning: Follow the specified 10–25% range for brush or roller and 30–40% for conventional spray.
- Recoating Too Early: Allow the stated 4–6 hour recoat interval under normal conditions.
- Sanding Too Soon: The product is designed for easy sanding after overnight air drying.
- Leaving Sanding Dust: Remove all sanding residue before applying the finishing coat.
- Using an Unsuitable Topcoat: Use a compatible finishing system appropriate for the undercoat.
- Delayed Equipment Cleanup: Clean application tools with Mineral Turpentine immediately after use.
Safety & Handling
Primax Synthetic Undercoat contains Mineral Turpentine and has a stated flash point of 34°C. Appropriate safety precautions should therefore be followed during storage, thinning, application, and cleanup.
- Keep away from heat, sparks, flames, and ignition sources.
- Do not smoke while handling or applying the product.
- Use in a well-ventilated environment.
- Avoid unnecessary inhalation of vapours or spray mist.
- Use suitable gloves, eye protection, and appropriate personal protective equipment.
- Keep the container tightly closed when not in use.
- Keep out of the reach of children.
Frequently Asked Questions
What is Primax Synthetic Undercoat?
Primax Synthetic Undercoat is a fast-drying alkyd resin-based undercoat designed to provide excellent filling and adhesion properties before compatible finishing coats are applied.
What colors are available?
Primax Synthetic Undercoat is available in Light Grey, White, Pink, and Green.
Which topcoats can be applied over Primax Synthetic Undercoat?
The supplied product information states that it can be over-coated with synthetic enamel, hammer tone, metallic finishes, and automotive lacquers.
Can Primax Synthetic Undercoat be sanded?
Yes. It is formulated to be easily sandable after overnight air drying.
How long does it take to dry?
The stated touch-dry time is approximately 1–2 hours under normal conditions.
When can another coat be applied?
The stated recoat time is approximately 4–6 hours.
How can Primax Synthetic Undercoat be applied?
It can be applied using brush, roller, or spray.
What is the thinning ratio for brush or roller?
The stated thinning range for brush or roller application is 10–25%.
What is the thinning ratio for conventional spray?
For conventional spray application, the stated thinning range is 30–40%.
What is the coverage of Primax Synthetic Undercoat?
The stated coverage is approximately 9–11 m²/litre/coat under normal conditions.
What pack sizes are available?
Primax Synthetic Undercoat is available in 0.91 Litres and 3.64 Litres.
How should application equipment be cleaned?
Clean all application equipment with Mineral Turpentine immediately after use.
A Smooth Finish Starts with the Right Undercoat
Primax Synthetic Undercoat provides a practical preparation layer for coating systems where filling, adhesion, sanding, and a smooth base are important.
With its alkyd resin formulation, fast drying, overnight sanding performance, 9–11 m²/litre/coat coverage, and compatibility with synthetic enamel, hammer tone, metallic finishes, and automotive lacquers, it provides a versatile foundation for professional finishing work.
For application guidance, substrate preparation recommendations, compatible finishing systems, and product availability, contact Primax Paints or an authorized Primax Paints dealer.
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