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