Bluebird Synthetic Undercoat is a high-quality, solvent-based undercoat designed for use on both interior and exterior surfaces. It provides excellent adhesion, durability, and a smooth base for topcoats, particularly for wood and metal surfaces. This undercoat ensures the topcoat’s longevity and enhances the overall finish by sealing and preparing surfaces effectively.
1. Considerations
Before applying Bluebird Synthetic Undercoat, take the following factors into account for best results:
- Temperature: Apply in conditions between 10°C and 30°C. Extreme cold or heat can negatively affect drying times and adhesion.
- Humidity: Ideal humidity should be below 80%. High humidity can slow down drying, especially on exterior surfaces.
- Surface Dryness: Ensure the surface is completely dry before applying the undercoat, especially after cleaning or exposure to moisture.
- Ventilation: Since this is a solvent-based product, ensure good ventilation during application to avoid inhaling fumes and to help the undercoat dry evenly.
2. Surface Preparation
Proper surface preparation is key to achieving a smooth and long-lasting finish:
- Cleaning: Remove all dust, dirt, grease, and loose paint from the surface. For exterior surfaces, power washing may be necessary, while interior surfaces can be cleaned with a mild detergent or a surface cleaner.
- Sanding: Sand down rough spots and glossy areas to create a slightly rough surface for better adhesion of the undercoat.
- Repairing: Fill any cracks, dents, or holes with a suitable filler and sand the surface once it is dry for a smooth finish.
- Rust Removal: For metal surfaces, ensure all rust is removed using a wire brush or sandpaper. Apply a rust converter if needed to prevent further rusting before applying the undercoat.
3. Priming
For certain surfaces, a primer may still be needed before applying the Synthetic Undercoat:
- Unfinished Wood or Bare Metal: Apply a primer suitable for the surface type (wood primer for wood, metal primer for metal) before using the Synthetic Undercoat.
- Benefits: Priming on porous or bare surfaces will enhance the adhesion of the undercoat and prevent any issues with the topcoat’s durability or finish.
- Drying Time: Allow the primer to dry completely before moving on to the application of Bluebird Synthetic Undercoat.
4. Application Techniques
Follow the correct application techniques for a smooth, professional finish:
- Tools: Use a high-quality synthetic brush or roller for best results. A roller is ideal for large flat surfaces, while a brush is good for detailed areas or edges.
- Stirring: Stir the undercoat thoroughly before use to ensure an even consistency and prevent any separation of solvents.
- Application: Apply the undercoat in thin, even coats. Avoid overloading your brush or roller to prevent drips and runs. Use long, smooth strokes for an even finish.
- Drying Time: Allow the undercoat to dry fully before applying the topcoat. Typical drying time is 6-8 hours, depending on temperature and humidity.
5. Number of Coats
Depending on the surface and condition, more than one coat may be required:
- First Coat: Apply the first coat evenly to all surfaces, ensuring full coverage. Allow the undercoat to dry thoroughly before proceeding.
- Second Coat: If necessary, apply a second coat for optimal adhesion and smoothness, especially on highly porous or rough surfaces.
- Sanding Between Coats: For an ultra-smooth finish, lightly sand between coats with fine-grit sandpaper (around 320 grit) and remove any dust before applying the next coat.
6. Clean-up and Ventilation
Clean-up and proper ventilation are important for safe application:
- Clean-up: Since Bluebird Synthetic Undercoat is solvent-based, clean brushes, rollers, and other tools with a suitable paint thinner or mineral spirits immediately after use. Do not allow the product to dry on tools, as it becomes harder to clean once dried.
- Ventilation: Ensure proper ventilation in the work area to avoid inhaling fumes. Use fans or open windows in enclosed spaces. For exterior applications, avoid applying in high winds to prevent dust and debris from sticking to the wet surface.
- Disposal: Dispose of leftover paint and solvent-based waste responsibly, following local regulations for hazardous materials.