The existing tiles must be soundly bonded to the walls.
Tiling on top of old wall tiles.
No matter whether you are tiling over tiles on a floor or a wall your new tiles will need a stable base.
If the ceramic tiles are well bonded to the wall it is possible to install new tiles right on top of the old ones.
If it sounds very hollow then they are likely not well bonded.
One way to check is to gently tap them.
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The scrapes you create in the old tile glaze make it easier for the thinset to stick.
This allows for a better bond between the new and old tiles.
Obviously no matter how well fixed the new tiles are if the old tiles de bond from the wall and fall off then so will the new ones.
In the case of a floor this could cause both layers of tiles to lift up.
People worry about removing plaster from the wall when stripping old tiles but re skimming the plaster.
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.
Tiling over ceramic tiles how to lay tiles on top of existing wall and floor tiles.
Tile on tile or as i say it.
Mix degreasing cleaner with water in a bucket using a dilution recommended.
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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.
Make sure the old tiles are well fixed.
If the old tiles are in bad shape the new tiles won t adhere correctly.
This technique works well in backsplash areas because the new thickness of the.
How to tile over ceramic tiles and lay new tiles onto already tiled walls without needing to remove all of the exiting tiles.
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.
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.
In fact pros do it all the time.