Altex Elite 321 Brushing Topcoat (2-Pack) – 1L Marine Polyurethane Finish

The Altex Elite 321 Brushing Topcoat (2-Pack) 1L is a premium, high-performance polyester polyurethane marine finish designed for brush and roller application. Engineered for durability, gloss retention, and long-term protection, this two-component topcoat delivers a professional-quality finish on a wide range of marine surfaces.

Formulated using advanced polyurethane technology, Elite 321 provides excellent UV resistance, chemical resistance, and long-lasting gloss, helping protect your vessel from harsh marine conditions while maintaining a superior cosmetic finish.

Ideal for maintenance repainting and refinishing projects, this versatile topcoat is suitable for topsides, cabins, decks, interiors, masts, and fittings, making it a trusted choice for both professional marine painters and DIY boat owners.

Key Features

• High-performance two-pack polyurethane marine topcoat

• Designed specifically for brush and roller application

• Excellent gloss, colour retention, and cosmetic finish

• Outstanding UV, chemical, and weather resistance

• Durable, flexible, and tough protective coating

• Ideal for maintenance repainting of yachts, launches, and boats

• Easy-flow formulation for smooth finish and minimal brush marks

• Professional-grade performance with excellent economy

Technical Specifications

• Product Type: Two-component polyester polyurethane topcoat

• Pack Size: 1 Litre kit 

• Mix Ratio: 3:1 by volume

• Finish: High gloss

• Coverage: Approx. 11.2 m² per litre @ 50µm dry film

• Pot Life: Approx. 5 hours at 25°C

• Touch Dry: ~1.75 hours (approx.)

• Hard Dry: 16–24 hours (approx.)

• Application: Brush or roller (roll & tip recommended)

• Thinner: Altex Thinning Solvent #22