Also known as antifouling paint, the copper additive in these coatings prevents organic material, such as algae, barnacles, and slime from attaching to the surface. Use on boats, submerged structures, and inside tanks. Coatings wear at a controlled rate, continuously exposing fresh copper to prevent buildup. Apply with a brush or roller.

Coatings with 45% copper prevent buildup for longer periods than coatings with 25% copper. Use in harsh environments, such as warm water, where organisms grow easily.