TotalBoat Underdog antifouling paint can be applied directly to properly prepared Pettit 1933 Copper Bronze antifouling paint.
The old antifouling paint must be in good condition and well adhered. The surface must be free of all marine growth or other potential surface contaminants prior to sanding and applying new antifouling paint. Heavily sand the Pettit 1933 Copper Bronze antifouling paint, remove all sanding residue, and follow the remaining surface preparation and application instructions on the TotalBoat Underdog paint label.