You might have loose tiles that are coming off of a wall.
It is also common to have tiles on the floor coming loose.
When this happens, it is not a good idea to leave them as they are.
Particularly if they're on the floor, they can cause injury and it is likely that they will get broken.
The decision about whether to repair or replace them might be made for you if you allow them to stay loose and become cracked.
You have to consider your specific situation to figure out what is best to do.
If you want to have a different look to your tile, then obviously replacing all of them is the only thing you can do.
The problem is that you are going to be creating a fairly substantial mess wherever it is that you have to replace tiles.
Tearing them out can cause dust and it is also possible to damage the surface behind the tiles.
You will also have to consider that you're going to lose the use of that space for as long as it takes to remove all the tiles, set up the area to be ready for the new tiles and install them.
It's not only an inconvenient solution, but it can also be a costly one.
You have to factor in the cost of the labour and of all the materials.
The alternative is to repair the tiles.
The most obvious advantages include the reduced cost of this option and the convenience.
The problem with a repair job is that refixing tiles can be difficult to do.
If you have ever tried to repair a tile that is already part of a wall or a floor you will know that refixing tiles means trying to get the adhesive in underneath the tile.
That's very difficult if you don't take the tile off.
There is a way to go about refixing tiles without having to remove them.
If you think about it, the best way to get adhesive in behind the tile that is still on a wall or a floor is to use pressure.
If the adhesive is pressurized, then it will make its way in behind the tile and there's no need to remove it.
If you undertake a repair job by refixing tiles without taking them off, the job can be completed in a very short amount of time.
If your tiles are part of a wall, then you can fix the grout around them after just a few hours.
If your tiles are part of a floor, then they will be ready for foot traffic after just a few hours if you repair them using pressurized adhesive.
It's a much cleaner option, and you don't have to go through the inconvenience of waiting for days for the job to be completed.
If you don't have a large number of broken tiles, then refixing tiles using pressurize adhesive seems like the best possible option.
The money you save is the best part of this solution and the convenience is just an added bonus.