The best way to care for Corian is to wipe up spills quickly and prevent stains from happening. When stains do occur, it is important to use the right method for each particular Corian surface.
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There are three types of Corian surfaces: matte/satin, semigloss and high-gloss. All Corian sinks have the matte/satin finish. Day-to-day cleaning of all three surface types can be done with soap and water or an ammonia-based cleaner. For tougher stains, each finish requires a slightly different type of care.
Stain Removal for Each Finish
For the matte/satin finish: use an abrasive cleaner and a green Scotch-Brite pad.
For the semigloss finish: use Soft Scrub or diluted bleach and a white Scotch-Brite pad.
For the high-gloss finish: use Soft Scrub or diluted bleach and a sponge.
Removing hard water stains: To remove hard water stains, wipe with a clean, damp cloth and towel dry until the marks disappear.
Removing nail polish: To remove nail polish from Corian, use only non-acetone-based nail polish remover. Wash the area with soap and water to remove any residue.
Removing oil/grease from sinks: Partially fill the sink with hot (not boiling) water. Add 2 tsp. bleach. Be sure the room is well ventilated. Let sit for a few hours, then drain the sink. Rinse well.
Tea/coffee stains: To remove tea and coffee stains from Corian, make a thin paste of baking soda and water, then gently rub with a sponge onto the stain. Rinse well with clear water. This mild alkali solution should easily lift the oily residue from the surface.