Yes you can lay tile over an existing tile floor as long as it is in good condition with no major cracks or settling.
Tiling over tile in bathroom floor.
To lay tile over tile.
Clean floor clean the floor to remove any grease or dirt.
Some installers prefer to flatback each tile with the flat edge of the trowel before applying the tile to the combed thin set.
Complete adhesive coverage is critical on large tiles 12 in.
Cement board plus 1 4 in.
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Tile which means that you ll have to trim the door raise the vanity extend the toilet ring and make a new transition to the hallway.
Or larger and even more important when you re tiling over tile.
Buy a latex modified thin set one brand is flexbond and mix it in small batches to keep it from skinning over.
In that case use tiling method 1 and add either 1 4 or 1 2 in.
Layout tile layout the tile pattern on the floor by popping chalk lines to use in aligning the tile.
Tile on tile or as i say it.
Cement board to build it up.
Tiling over existing tiles can save time and money.
And it lasts for 20 years.
Others prefer to use a larger notched trowel 1 2 x 1 2 in to apply the thin set.
Keep in mind that in doing so you ll be raising the floor level 1 2 to 3 4 in.