Use a sanded grout if you are tiling over a floor and a non sanded grout if you are tiling over a wall.
How to install tile over tile wall.
Working in small sections spread the thinset over the existing tile using a notched trowel.
Epoxy tile adhesive bonds with existing tiles making it one of the best options for tiling over an existing tiled wall.
Add another 1 8 inch to the height measurement and place a mark on the vertical.
Grind them down with a grinder.
Position your tiles according to the layout you choose.
If your old ceramic tile is worn or dated you can lay new tile right over the old and avoid the huge job of tearing out the old tile.
Measure up from the bottom of the wall the height of the tile.
First clean and then sand the surface of the old tile until it feels rough.
And third let this coat dry for 24 hours.
Using a modified mortar with latex or polymer additives creates a stronger bond between the existing tile floor and your new tiles.
Force the grout in between individual tiles using a trowel.
To do so make sure all of the tiles are intact and secure.
Prepare the surface for installation.
Repair any loose or cracked tiles.
If existing tiles are beyond repair remove the tile and install a piece of wallboard in its place.
Grout in between the tiles.
Lay a level on the old tile and mark any high spots.
This provides a more even foundation for the new tiles to adhere to.
Mix the grout according to the manufacturer s instructions and swipe it over the joints in between your tiles sealing them together.
Tile on tile or as i say it.
The basic tiling process is the same as any tile installation.
And it lasts for 20 years.
Mix degreasing cleaner with water in a bucket using a dilution recommended.
Second apply a very thin coat of thin set mortar filling in the current grout lines.
Remove the tile and prepare the wall according to the corresponding instructions above or tile over the existing tile.
Roughen the tile with 80 grit sandpaper.