If you have cultured marble countertops, sinks, showers or baths that are looking dull from age or harsh cleaners, it is possible to make them shine again. However, this is only if the clear protective gel coat layer on top remains intact. If the layer is ruined, you will need to do more extensive repairs and refinishing. This is best left to a professional.
To keep your cultured marble surfaces in good condition and maintain their shine, regularly clean them with a quality stone or granite cleaner. This should be done with a soft cloth or sponge. Avoid abrasive pads as they may scratch the surface. If your cultured marble becomes dull, try a gentle cleaning product like Gel Gloss or another brand of marble polish. This will usually restore the shine to a newer, brighter look.
If your cultured marble is severely dull, it will probably require a more aggressive approach. This might include rubbing and buffing with automotive compounds, which are available in either solid or liquid forms. Follow the manufacturer’s instructions on the label for proper application. It is important to work on a small area of the countertop at a time so you don’t damage the finish. Always test any chemical or cleaner on a hidden part of the counter to ensure it will not discolor your cultured marble.
For light stains, you can also use paint thinner or denatured alcohol. Pour a small amount of the cleaning agent on a cloth or cotton ball and rub it into the stain. Be sure to test the substance on a hidden area of your countertop first to be certain it will not damage the cultured marble while attacking the stain.
Hydrogen peroxide, which can remove many common stains such as hairspray, nail polish and ink, may also be effective on some cultured marble surfaces. If the stains are not removed, you can apply a poultice of equal parts sugar and baking soda to the area to draw out the stain. Rinse the area well afterward and dry it.
A specialized stone-safe wax is also available for restoring the shine to cultured marble. This is often suggested for tubs and showers, but it can be used on any type of cultured marble surface. As with any wax, it is recommended that you test a small area of the countertop for color and texture changes before using it on your entire vanity or tub.
If your cultured marble is badly damaged with deep burns, scratches, or a dull, yellowed appearance, you will probably need to have it professionally repaired and refinished. Refinishing involves repairing the surface of the countertop, as well as matching the color and pattern to the rest of the vanity. It can be very costly, so it is best to prevent these types of problems in the future by cleaning and polishing your cultured marble regularly and properly. This will help keep it beautiful and stain-free.