Ultra-Kote Long-Lasting Hard Antifouling, Gallon, Black

Ultra-Kote provides excellent long-term antifouling protection suitable for even severe fouling tropical waters.
Ultra-Kote is a hard modified epoxy that is durable, fast drying, and scrubbable with excellent color stability. In addition Ultra-Kote is a low Volatile Organic Content (VOC) formulation which limits solvent emissions into the atmosphere.

High copper loading makes this paint ideal for heavy fouling warmer waters to severe fouling tropical waters. This fast-overcoat, fast-launch formula makes for fast boatyard turn around.
May be used on fiberglass, wood or primed steel. May be applied over antifouling paint in good condition.

• Proven performance and long-term protection against both hard and soft growth fouling organisms – at an attractive price
• Very high 67.5% cuprous oxide content
• Durable finish – scrubbable finish with excellent color stability and excellent film build prevents wear through
• Low VOCs (327gm/l) – limits solvent emissions during application as well as into the atmosphere
• Boatyard friendly and flexible application choices – compatible with most other antifoulings and perfect for brush/roller and airless spray methods
• Suitable for use on power and sail boats in all waters
• Fast drying - paint and launch in the same day in warm conditions
• Suitable for high-speed boats
• Contains copper – do not use on aluminum hulls, outdrives or outboards
• Apply using brush, 3/8" nap solvent resistant roller, airless or conventional spray
• Thinner: Brush-Ease 433; Special Thinner 216
• Theoretical coverage is 506 ft²/gallon; 2 or more coats recommended, 3 on bare wood; 63% solids (vol.)
• Not for use in California

Unlike its previous version (Ultra), Ultra-Kote does not contain Irgarol, which due to a worldwide shortage is no longer available. However, Interlux has re-formulated Ultra-Kote to provide similar protection.

Is copper bottom paint illegal?

What does the future hold for copper antifouling paint? The use of most copper-based antifouling paints will most likely be limited by Washington law starting in 2026.