Mix a solution of warm water and white vinegar or use a dedicated marine vinyl cleaner. Apply it to the affected areas and scrub gently with a soft brush or cloth. For stubborn mold and mildew, a paste of baking soda and water works well. Rinse thoroughly with clean water and dry the seats completely. Finish with a vinyl protectant to prevent future growth. Regular cleaning and keeping seats dry between uses are the best ways to stop mold and mildew from coming back.
Wild Life Adventures reviews Better Boat's Mold and Mildew Remover and tests it out on his boat. It removed some mold stains that had been on his seats for a long time. Check it out
Remove ugly mildew and mold stains from boat seats, covers, vinyl, plastic, fiberglass, canvas, rubber, tile, and grout.
What you need for this job
Mildew Stain Remover
This mildew stain remover tackles mold and mildew on vinyl boat seats, canvas, fiberglass, and more. Apply it directly to the stained surface and let it do the heavy lifting.
