Details on How to Reglaze a Cultured Marble Vanity Countertop at Home

Clear the vanity countertop surface of soap dishes, decorative items and other objects. Make sure you have plenty of workspace in the room as well, removing items such as trash cans or towels that might get in your way.

Use a sponge or soft cloth and a household cleaner with a neutral pH to clean the countertop thoroughly. Choose between direct application cleansers and those you must mix with water, following the manufacturer's product instructions. Get into corners and crevices with a toothbrush, especially around the sink basin edge, scrubbing lightly to remove buildup.

Rinse the cleaning solution from the surface, wetting a clean cloth and wiping the surface, then rinsing the cloth and wiping the countertop again. Dry the countertop completely, rubbing with a fresh, dry cloth.

Wet a piece of 100- to 120-grit sandpaper. Sand gouged or scratched areas of the cultured marble countertop, re-wetting the sandpaper as necessary to ensure it remains moist. Use firm and steady pressure during sanding, working in a circular motion. Aggressive or excessive sanding may wear through the surface and further damage the appearance. Smooth out the edges of the defect, and work as much of the blemish out as possible without sanding too deeply.

Mop up the sanding dust with a damp cloth or sponge, getting down in the defect as well. Swipe the sanded area with acetone, applied with a paper towel. Allow the area to air-dry for 30 minutes to an hour.

Prepare a two-part cultured marble epoxy filler, mixing the filler with the chemical hardener according to the manufacturer's instructions. Add a small amount of colorant, if desired, to match the color of your cultured marble, following product directions for amounts.

Spread the epoxy filler across the damaged area, working it down into the defect as well. Use a plastic spatula -- typically provided with the epoxy -- and apply the filler much like you would frost a cake. Mound the epoxy up slightly so it is a fraction above the countertop surface. Air-dry the filler for 10 to 20 minutes.

Turn a hair dryer on, and heat the repaired areas to dry any moisture deep in the repair. Move the hair dryer constantly, holding it 8 to 10 inches above the damaged area surface. Allow the area to air dry overnight alternatively.

Spread a small amount of automotive finishing compound, used in waxing, across the countertop. Allow the compound to form a haze, then buff the countertop with a high-speed buffer fitted with wool pads. Begin with the slowest speed, working up speeds gradually to produce a high-shine finish.

Pour a small amount of liquid polish designed for cultured marble across the surface. Rub it in slightly, then allow it to dry and form a haze. Use a clean, soft cloth to buff away the polish, increasing the newly reglazed shine of your cultured marble vanity countertop.