Get your boat's gel coat perfectly prepared for ceramic coatings with Marine 31's specialized prep spray! This 20-ounce formula works on a molecular level to strip away oils, films, waxes, and sticky residues that can prevent coatings from adhering properly. Essential to use before applying any ceramic or protective coating to ensure maximum bonding and longevity. The spray-and-wipe application couldn't be simpler - just spray directly onto cool surfaces (avoid direct sunlight) and wipe away with a clean microfiber towel. The specialized cleaners break down tough contamination that regular washing misses, leaving your gel coat perfectly primed for the next step. Using this prep spray before coating application means your protective layer will last longer and perform better. Perfect for spot treatments or preparing entire boat surfaces before seasonal coating applications. Works on exterior gel coat surfaces to remove everything from old wax buildup to water spots and film contamination. Many boat owners skip this crucial step and wonder why their coatings don't last - don't make that mistake! The 20-ounce bottle provides plenty of product for multiple applications on average-sized boats. A professional-grade preparation product that makes DIY coating applications much more successful and long-lasting.