You can tile directly over your current marble fireplace surround.
Can you tile over tile fireplace.
Then if you use the proper mastic the tiles should stick.
If you want to tile over a marble fireplace you have to address the problem of tile adhesion.
How to tile with before and after pictures of a fireplace surround makeover.
Then take that piece and hold it up to the previous piece you cut to make sure it is the same width length whichever is applicable.
The board also prevents the tiles from slipping before the adhesive cures.
The peel and stick tiles have a little extra space on one side so you can overlap them slightly so there are no gaps.
Each time you cut a piece of tile take it over to fireplace and hold it up to make sure it fits.
There are three parts to the fireplace.
Tile is not recommended for applications that will exceed 175 f 80 c so it s not an option for the firebox.
One strategy is to clean the marble with tsp and water then sand it with coarse sandpaper to etch it.
The average do it yourself homeowner can cover their old tile fireplace surround with new tile in one to two days depending on the size and scope of the project.
The firebox the surround and the hearth.
Smooth the tile down with your hand.
The row of tiles directly above the firebox is visually the most important so it should be absolutely straight.
Nowadays it is quite possible to tile over the old tile and avoid the time and money of cleanup and backerboard installation.