Hempel's Primer Undercoat: The Foundation for a Flawless Finish
Hempel's Primer Undercoat is a quick-drying, high-opacity primer that provides a durable and stable foundation for your topcoats. This versatile primer enhances the adhesion and performance of subsequent coatings, ensuring a long-lasting and beautiful finish. It is suitable for use on various substrates, including fibreglass, wood, and steel, making it an ideal choice for both interior and exterior applications above the waterline.
Key Features
- Quick-Drying: Dries rapidly, allowing for faster recoating and project completion.
- High Opacity: Provides excellent coverage and hiding power, ensuring a uniform and attractive base for subsequent coatings.
- Versatile Adhesion: Adheres well to fibreglass, wood, and steel, making it suitable for various applications.
- Durable Foundation: Creates a stable and durable surface for improved topcoat performance.
- Easy Application: It can be applied by brush, roller, or spray for convenience and efficiency.
Application Information
- Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants. For new or bare substrates, sand and remove all dust. For steel, remove salt and contaminants with fresh water cleaning and abrasive blasting or power tool cleaning to remove rust and loose material. For previously coated surfaces, abrade, clean, and dry the surface.
- Priming: Not applicable, as this product is a primer.
- Application Methods: Apply using a brush, roller, or spray.
- Conditions: Apply when the surface temperature is at least 3°C above the dew point to avoid condensation. Ensure adequate ventilation during application and drying.
Technical Specifications
- Volume Solids: 49 ± 2%
- Specific Gravity: 1.3 kg/L
- Dry Film Thickness: 40 microns
- Flash Point: 40°C
- VOC Content: 389 g/L (EU)
Additional Information
- Compatibility: Can be overcoated with Hempel's Multicoat, Hempel's Brilliant Gloss, Hempel's Bilge & Locker Paint, and Hempel's Non-Slip Deck Coating.
- Technical and Safety Data: Please refer to the technical and safety data sheets for comprehensive information.
Application Methods : 
| Temp | Touch Dry | Recoat (min/max) | Thinners / Tool Cleaner | Coverage |
| 10°c | 6 hrs | 8 hrs - 6 days | Thinners No: 1 | 12m²/ltr |
| 20°c | 3 hrs | 4 hrs - 3 days | | 12m²/ltr |
The colours shown should be used as a guide only due to the varying degrees in monitor colour management.
Need more help? Contact us for expert advice on selecting and applying the right antifouling system for your boat.
