Wet Sand Marble
Place a piece of 120 grit sandpaper on the pad of a palm sander.
Wet sand marble. Dirt and dust will compress into the marble further scarring or discoloring the surface. Before sanding or grinding any marble surface it is important to clean the area thoroughly. You can polish the flooring either by dry sanding or wet sanding. 400 600 grit wet sanded should generally give you a nice eggshell like matte finish that can easily be polished if you want too but either way you ll want a sealer on in the stone to prevent as many stains as possible especially in areas that.
This will require using a wet sanding process to achieve the desired results. Use special silicone carbide sandpaper in range of grits to slowly work out those imperfections. By wetting the marble before you sand you ll give the dust something to stick to so it will form a paste rather than flying into the air where you could inhale it. If the cultured marble surface still isn t smooth and shiny try wet sanding with 1 000 grit wet dry sandpaper also available at auto supply stores followed by buffing with rubbing and polishing compounds to remove any scratches from the sandpaper.
Wet the surface of the marble with a spray bottle. Marble floor polishing can remove small scratches. While this method will work fine for statues tile and marble countertops sanding large areas of marble like marble floors requires a completely different process and technique. Depending on the type of marble crystal size impurities etc you may want to go higher.
As with other types of countertops marble will begin to lose its high shine and luster due to everyday use. Spray the marble top with water both before sanding and during the sanding process to keep the surface wet. Sanding marble is a time consuming process.