Tiling on tiles like this will not improve the problems.
Tiling over old tiles.
You do not have to allot work hours to pull up the existing tiles which means the tiling work can be finished much faster and all without the big mess.
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.
Use a portland cement based adhesive to adhere the new tiles to the old.
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Take care to choose a tile whose thickness is not going to create a problem and choose a tile that is rated for floor use.
This essentially means laying a new layer of tiles over the old layer.
But this isn t always the case.
No matter why you want another look you can tile over existing tiles if the wall is sturdy and none of the old.
Removing tile grout before you tile over old tiles.
If your old tiles are loose drummy lifting too uneven or badly damaged they are better off removed.
It is not uncommon for paint to be splashed onto bathroom and kitchen wall tiles and this needs to come off too.
Instead of removing the old tiles you can often update them by tiling over tiles.
Colorful tiles may go out of style and some tiles are inappropriate for the space.
Next you must clean down the old tiles.
One advantage of doing this is that it is time saving.
The scrapes you create in the old tile glaze make it easier for the thinset to stick.
This is best done with some white spirit on a rag.
Tile on tile or as i say it.
Bathroom tiles get greasy as a result of the soap suds shampoo and shower gel.
Tiling over tile is usually a much easier and cheaper solution than pulling up your original tiles and re tiling your floor or wall.
This allows for a better bond between the new and old tiles.
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 tile adhesive before beginning the project.
This assumes that the floor underneath is solid concrete and that there are no cracks in the existing tile indicating underlying problems in the concrete.
Most people dread re tiling because it often means that you need to remove all the old tiles first.
It s also a good idea to go over the existing tile with a belt or orbital sander outfitted with 80 grit sandpaper to scuff up the surfaces.