4. I treated all the rust marks and waterline staining on my boat and then applied a coat of wax to seal the surface but my boat looks all patchy, what has happened ?.
Treating isolated areas of your boat will produce “clean spots”, these may not be too noticeable if your boat is slightly dull or faded. Applying a coat of wax greatly enhances these “clean spots” showing how dirty the rest of the boat really is! To avoid this it is advisable to treat the entire area with Grunt boat cleaner and leave your boat really clean.
Area to be cleaned taped off to show what happens if only a small area is treated with Grunt! boat cleaner.