Hempel's Underwater Primer: The Essential Foundation for Antifouling
Hempel's Underwater Primer is a fast-drying primer that provides a crucial layer of protection and adhesion for antifouling paints. This versatile primer contains aluminium flakes, enhancing the performance and longevity of your antifouling system. It can be used as a tie coat over epoxy-primed surfaces or as a sealer for old antifouling, making it a valuable addition to your boat maintenance arsenal.
Key Features
- Fast-Drying: Dries quickly, allowing for rapid overcoating and efficient project completion.
- Versatile Application: Suitable for use on fibreglass, wood, and steel below the waterline.
- Enhanced Antifouling Performance: Improves the adhesion and performance of antifouling paints.
- Dual-Purpose Functionality: Can be used as a sealer for old antifouling or as a tie coat over epoxy-primed surfaces.
- Easy Application: Can be applied by brush, roller, or paint pad for convenient application.
Application Information
- Surface Preparation: Ensure surfaces are clean, dry, and free from contaminants. For new builds or uncoated surfaces, 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 paint pad.
- 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
- Colour: Aluminium Grey
- Gloss Level: Not available
- Volume Solids: 39 ± 2%
- Specific Gravity: 1.2 kg/L
- Dry Film Thickness: 50 microns
- Flash Point: 35°C
- VOC Content: 479 g/L (EU)
Additional Information
- Compatibility: Can be overcoated with Hempel's antifouling paints.
- 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 | 4 hrs | 6 hrs - none | Thinners No: 1 (Brush) | 7.8m²/ltr |
20°c | 2 hrs | 3 hrs - none | Thinners No: 3 (Spray) | 7.8m²/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.