The problem is the size and weight of the tiles first is the tiles porcelain if so they should not have been fixed to plaster walls and you should of use powdered adhesive ready mixed is only good for ceramic tiles up to 300 x 300 the walls should be clad with tile backer board including the smooth finished wall and any priming should be done with sbr diluted.
Tiles not sticking to wall.
Tile won t stick to thinset.
The plaster finish is pink and very smooth but not dusty.
After 2 days can easily be lifted off by hand with no adhesive left on the wall.
Do not clean them with a solution that is gritty or has crystals in it as that could mess up the adhesive in the tile backing.
Mixtiles are beautiful 8 x8 photo tiles that stick and restick to your walls without nails or any damage.
Cleaning your trowel frequently by washing it off with water will make it easier to work.
The adhesive sticks well to the tiles but our problem is very poor adhesion to wall.
To fix a tile that pops up later reactivate the adhesive by heating it up with an iron.
Then prep the wall and use the adhesive made specifically for the tile you have.
If the wall is wet the tiles will not stick.
Could be as simple as not using the correct size trowel the back of the tile has to be covered 90 percent with thinset.
Use gorilla glue to replace each one.
Sometimes self stick vinyl tiles won t stick only after the fact.
Fixing a tile that pops up later if the corners peel up heat the tile to reactivate the adhesive then place a stack of heavy books on it to weigh the corner back down.
Be sure to spray the wall surface with water to activate the glue.
Or take them all down putting wax paper between each tile so they don t get damaged.
Just lay it lift it back up and check for coverage.
Tiles arrive in five days and shipping is always free.
Keep a damp rag handy so you can keep your hands clean.
Mixtiles are beautiful and attach easily.