Rust-Oleum 7300 CombiColor Original
Rust-Oleum 7300 CombiColor Original
Overview
Protect and beautify metal surfaces with Rust-Oleum Combicolor Original, a high-performance coating that combines primer and topcoat in a single step. Its urethane-modified alkyd formula dries well even at low temperatures, making it perfect for year-round projects.
Apply directly to rusted or bare metal with confidence, the rust-inhibitive, lead- and chromate-free formula delivers smooth, sag-free results with high coverage of 10.3 m² per litre. Usable down to 5°C, it’s ideal for DIYers and professionals alike.
- Primer and topcoat in one
- Works on rust and bare metal
- Rust-inhibitive, lead- and chromate-free
- High coverage: 10.3 m² per litre
- Smooth, sag-resistant finish
- Usable in temperatures as low as 5°C
- Heat resistant up to 90°C
Get long-lasting protection and a flawless finish with Rust-Oleum Combicolor Original.
| Area | Interior & exterior |
| Recommended Use | Designed for application on bare, manually derusted, or primed steel. |
| Base | Solvent-based |
| Coverage | Up to 10.3m² per litre |
| Drying Time |
Touch dry - 1.5-3 hours Dry to handle - 6-16 hours Fully cured - 5-14 days |
| Re-Coat Time | 8-16 hours |
| Recommended Coats | As required |
| Application Method | Brush, Roller or Sprayer |
| VOC Levels | High |
| Clean Up | Use RUST-OLEUM Thinner 7301 or RUST-OLEUM Thinner 160 |
Preparation
Proper surface preparation ensures optimal adhesion and long-lasting protection. Before applying Rust-Oleum 7300 CombiColor Original, make sure all surfaces are clean, dry, and free from contaminants. Follow these steps for best results:
- Clean the surface: Remove oil, grease, and other contaminants using alkaline cleaning or high-pressure (steam) cleaning with appropriate detergents.
- Remove loose material: Scrape or wire brush away rust scale, loose mill scale, loose rust, and flaking coatings to St 3 standard (ISO 8501-1:1988).
- Smooth intact coatings: Lightly sand existing coatings to roughen the surface and promote adhesion.
- Blast or sand: Where necessary, use light blast cleaning or sanding to prepare metal surfaces.
- Ensure dryness: Make sure the surface is completely dry during application.
- Special surfaces: Galvanised, zinc, and aluminium surfaces must be primed first with CombiColor Adhesion Primer 3302.
Following these steps will help you achieve a smooth, durable finish that protects your metal surfaces effectively.
Application
For optimal results, always ensure the coating is well-stirred and applied under suitable environmental conditions. Ideal application occurs when air, substrate, and coating temperatures are between 5°C and 35°C, relative humidity is below 85%, and the substrate is at least 3°C above the dew point.
Brush:
- Thin up to 10% with Rust-Oleum Thinner 7301
- Use natural bristle or long hair brushes
Roller:
- Thin up to 10% with Rust-Oleum Thinner 7301
- Use short nap polyamide rollers (6-12 mm)
- Two coats may be required to achieve recommended dry film thickness
Air-Atomised Spray:
- Thin 10-25% with Rust-Oleum Thinner 7301
- Suitable for gravity or pressure cup
- Tip size: 1.0-1.5 mm, atomising pressure: 2-4 bar
- For aluminum-colored coatings, HVLP spraying is recommended to avoid inhomogeneous appearance
Additional Remarks:
- Maximum dry film thickness per coat: 75 µm (≈135 µm wet)
- Can be recoated with CombiColor 7300 Aerosols after 4 hours or 72 hours