If you re not sure if you have lead paint test kits are available.
Can you sand marble tile.
For marble floors start with a dust mop.
You may tile over existing tile painted or unpainted drywall plaster and textured walls.
This will require using a wet sanding process to achieve the desired results.
Cleaning first before sanding or grinding any marble surface it is.
If you decide to sand your ceramic tiles manually keep in mind that the rougher the surface of the tile the lower the grit of your sandpaper should be.
Then if you use the proper mastic the tiles should stick.
Remember that your goal is to sand away the superficial glaze but let the tile retain the smoothness of its surface.
Marble floor polishing can remove small scratches.
You can polish the flooring either by dry sanding or wet sanding.
Use the foam brush to smooth out any puddles or tiny bubbles that appear on the surface as they can dry into permanent features.
Grout can badly stain marble tile if it is applied before the marble is sealed.
First wet sand the marble to wear away any scratches or etch marks then buff it to leave a smooth finish.
Unfortunately its porous surface means that marble can be scratched easily.
If you have polished marble apply a very thin coat of sealant.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
With a little elbow grease though you can able to buff out many scratches along with etch marks left by acidic substances.
Use special silicone carbide sandpaper in range of grits to slowly work out those imperfections.
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.
You want to avoid anything abrasive on the surface and dirt and sand being dragged around by a vacuum could do more damage than you intend.
Sanding the tiles manually.
If you want to tile over a marble fireplace you have to address the problem of tile adhesion.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
As marble tends to be shiny annie recommends starting with a thin coat of chalk paint.
One strategy is to clean the marble with tsp and water then sand it with coarse sandpaper to etch it.