Woolsey Ablative Plus is an economical, yet extremely effective ablative antifouling paint. Woolsey Ablative Plus provides excellent antifouling protection without the costs associated with high end antifoulants. Its ease of use, trusted performance, and attractive price make it an excellent choice for use as a boatyard "house paint." Equally effective on both power and sailboats, its ablative surface wears away over time, eliminating build up and the need for sanding between coats. Woolsey Ablative Plus can be used on most previously painted surfaces that remain in good condition, without the need to remove old coatings or paints. No special primers are required except on bare metal. Coverage: 500 sq.ft./gal. One or two coats per season are recommended for optimal performance. Do not use on aluminum hulls or outdrives.