Just lay it lift it back up and check for coverage.
Tile not sticking to wall.
To fix a tile that pops up later reactivate the adhesive by heating it up with an iron.
Sometimes self stick vinyl tiles won t stick only after the fact.
Could be as simple as not using the correct size trowel the back of the tile has to be covered 90 percent with thinset.
Then prep the wall and use the adhesive made specifically for the tile you have.
Tile won t stick to thinset.
Otherwise you do not have adequate working time.
Or take them all down putting wax paper between each tile so they don t get damaged.
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.
A tile wont stick even if the wall is a little damp so what we do is use dry wall adhesive to stick the tile then after 24 hours drying time use white grout to finish.
Wash the wall with a mixture of 1 part mild dish soap to 6 parts water.
You can apply many self stick wall tiles over top of existing tile or an ordinary smooth wall surface such as painted.
If some silicone has leaked around the suction cup don t worry just wipe the excess silicone from the tile with a paper towel or a cloth.
It cannot cure too fast.
Ok this problem pops up all over the internet i renovate really old buildings for a living for the passed 35 years.
It must be easy to work with and it must adequately fill in gaps between the tile and the substrate.
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.
Use gorilla glue to replace each one.
If the wall is wet the tiles will not stick.
Tile adhesive is expected to hold the tile in place not just for years but for decades without fail.
Be sure to spray the wall surface with water to activate the glue.
Demands placed on tile adhesive are both extensive and steep.
It is a good idea to clean them the night before you plan to do the tile.