One way to check is to gently tap them.
Tiling on top of old wall tiles.
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.
Learn the largest tile industry secret to remodel your bathroom for just 200 bucks and 1 days work.
Tile on tile or as i say it.
Epoxy tile adhesive bonds with existing tiles making it one of the best options for tiling over an existing tiled wall.
In the case of a floor this could cause both layers of tiles to lift up.
The existing tiles must be soundly bonded to the walls.
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.
If it sounds very hollow then they are likely not well bonded.
You will learn how to stagger the joints of the new tiles over the old how to clean down existing tiled walls.
If the old tiles are in bad shape the new tiles won t adhere correctly.
Tiling over ceramic tiles how to lay tiles on top of existing wall and floor tiles.
And it lasts for 20 years.
Mix degreasing cleaner with water in a bucket using a dilution recommended.
This allows for a better bond between the new and old tiles.
Make sure the old tiles are well fixed.
In fact pros do it all the time.
Tiling on top of old tiles means that any problems with the originals such as becoming loose will still be an issue with the new layer while the extra thickness can also make it more difficult to accurately install fixtures and fittings.
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.
No matter whether you are tiling over tiles on a floor or a wall your new tiles will need a stable base.
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.
If the ceramic tiles are well bonded to the wall it is possible to install new tiles right on top of the old ones.