Scrub the surface of the Corian counter using a grease-fighting soap and a plastic scrubber to remove any food particles, staining or residue.
Dry the counter well with a towel.
Sand the surface of the Corian counter using an electric sander with a fine-grit sanding belt. This will smooth down any scratches or unevenness caused by use.
Wipe off the counters well with a towel to remove any dust and debris caused by the sanding.
Paint an even layer of epoxy-based paint over the entire Corian counter using a half-sized paint roller. Apply the paint around corners and edges using a 2-inch flat paintbrush. Allow the paint to dry for eight to 10 hours.
Apply a second coat of epoxy-based paint over the counter as you did the first coat, and allow the second coat to dry for an additional eight to 10 hours before use.