Nippon Paint PU Recoatable Finish is a high-performance, two-pack, polyurethane coating specifically formulated for long-term durability and aesthetic excellence. Designed as a topcoat for both internal and external environments, it offers exceptional weather resistance and outstanding color and gloss retention.
Its unique "recoatable" property allows for easy maintenance and repair, as it can be recoated even after long-term weathering without the need for extensive sanding or surface abrasion. This makes it an ideal choice for high-profile structures, industrial facilities, and commercial buildings where a professional, high-gloss finish is required to withstand harsh UV rays and chemical exposure
Type: Two-pack aliphatic polyurethane.
Mixing Ratio: 4 parts by volume of Base to 1 part by volume of Hardener.
Pot Life: 4 to 6 hours after mixing (at 25-30°C).
Drying Time: Touch Dry: 2 hours; Hard Dry: 8 hours (at 30°C).
Theoretical Coverage: 10.0 – 12.0 m² per litre per coat (at 40–50 microns DFT).
Finish: High Gloss.
Solid Content: 55% ± 2% by volume.
Mixing: Stir the Base component thoroughly first. Gradually add the Hardener to the Base and mix using a power agitator until a completely uniform mixture is achieved.
Thinning: Use Nippon PU Thinner. Add 5% for airless spray, brush, or roller; for conventional compressed air spray, add 10% – 15% to achieve the desired atomization.
Application Method: For the best aesthetic results on large surfaces, use a compressed air spray. For smaller areas or touch-ups, a high-quality brush or solvent-resistant roller is suitable
Primer (Steel): 1 coat of Nippon Zinc Phosphate Primer QD or Nippon Hi-Pony 20 Zinc Rich Primer.
Intermediate: 1 coat of Nippon Hi-Pon 20-04 STE 80 (Epoxy Mastic).
Topcoat: 2 coats of Nippon PU Recoatable Finish.
Cleaning: The surface of the intermediate coat or primer must be clean, dry, and free from all contaminants like dust, oil, and grease.
Compatibility Check: Ensure the previous coat (Epoxy or Primer) has dried for the minimum required interval but has not exceeded the maximum recoating window.
Contaminant Removal: If the undercoat has been exposed to the elements for a long period, remove all chalking and salt deposits by high-pressure fresh water washing.
Dry Condition: Ensure the substrate temperature is at least 3°C above the dew point of the surrounding air to prevent moisture condensation during application.
Abrasion (If Required): If the maximum recoating interval of the previous coat has been exceeded, lightly abrade the surface with fine sandpaper to ensure mechanical bonding.
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