Technically it can be done but in practice it is avoided.
Can you install tile over marble.
As for tiling over it.
Removing existing tile before installing new tile is recommended however sometimes old tile can be very difficult or almost impossible to remove.
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Yes it s possible to go over a stable tile with a good substrate.
You can also install cement backer board.
The marble floor has to be structurally stable because your new floor will only be as good as the existing floor.
You will have to clean and scarify the marble before you installed the tile over it.
Grind them down with a grinder.
Then if you use the proper mastic the tiles should stick.
Use a thin set product to install ceramic tile over existing tiles.
Covering the cultured marble walls is not a good idea.
When it comes to mortar latex or epoxy options are best for installing tile over tile.
One problem when tiling over existing flooring is caused when parts of the hidden floor come loose.
Lay a level on the old tile and mark any high spots.
One strategy is to clean the marble with tsp and water then sand it with coarse sandpaper to etch it.
Use the belt sander to scratch the entire area of the cultured marble where you will be installing the tile.
You can tile directly over your current marble fireplace surround.
You can lay new ceramic tile right over the old using the prep techniques we show here.
This is a mixture of cement fine grain sand and water that will adhere the new tile to the old.
But i wouldn t consider tiling over a stone as porous as marble.
The reason for this is to create a surface rough enough so that the thinset or mastic will bond properly as cultured marble s finished surface is too smooth for tile adhesives to bond.
It avoids the time consuming messy tear out process.
If you want to tile over a marble fireplace you have to address the problem of tile adhesion.
Roughen the tile with 80 grit sandpaper.
Press the tile onto the floor.
Marble tile can be installed over existing ceramic tile provided the ceramic tile is in good condition and has a relatively flat surface.
If the original tile is still in excellent condition then it is possible to install tile over tile but the proper steps must be taken in order to complete the project correctly.
How to tile with before and after pictures of a fireplace surround makeover.