In other words you could use a floor tile spacer for a wall tile project as long as you have the right shape and size.
How to use tile spacers on wall.
Spacers have great utility for both floor and wall tile installation projects.
When you install tiles yourself spacers make it possible to keep straight grout lines and square tiles together as the adhesive dries.
For example you could use them as a separation point when the tile meets the wall and create expansion joints.
Tile spacers are necessary anytime you are doing a tile installation.
Now place the spacers at each corner of the tile.
This will ensure an equal gap wherever the tiles meet.
Place a spacer in between each grout joint on the bottom and top tile of the horizontal line like in the picture below.
Tile spacers make beautiful results easy when used properly.
Tile spacers make straight grout lines and give any tile installation a professional touch.
Repeat this process expanding the wall floor outwards using the spacers at the edges of each tile to keep a consistent distance between tiles.
Leave the tile spacers in place while the adhesive is setting.
Then place additional spacers against the remaining corners of the new tile.
You have a choice among common sizes which will depend on what size grout line you envision.
Avoid the mistake of placing them in the corner where four tiles meet.
Choose the spacers according to the size of the grout line and purchase four for every tile you can lay in a day.
Insert them vertically in floor tile and horizontally in wall tile one pair per each edge of the tile.
Use needle nose pliers to remove them effectively and easily.
How to use tile spacers at first place the tiles on the prepared surface with a layer of adhesive.
Keep an eye on the vertical joints making sure that they are in line with one another going vertically up the wall.
In such circumstances consider using cardboard as a tile spacer.
Leave the spacers in place for 20 to 30 minutes and remove them before the adhesive hardens.
Sometimes when installing tile you will have to deal with irregularly shaped pieces or complex designs.
Place the next tile against the spacers of your first tile.