Open the tile app on your smartphone or tablet.
Adding tile to existing tile.
Hold the tile close to your device until they connect it should take about ten seconds.
Scrub the wall tiles with diluted degreasing cleaner and a nylon scrub brush.
Your shower tile is surface mount so you can simply remove the trim piece at the point you want to start the subway tile and butt it into the existing square tiles.
Sounds like this is a new adventure for you.
Grind them down with a grinder.
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.
It was 13 x 13 the exact same size as the old tile.
It did not look like we had tried to match the existing tile and failed.
Layer newspaper on the floor across the bottom of the tiled wall.
By adding cement board and tile to the floor you will be increasing the top chord dead load.
It was relatively solid looking.
Roughen the tile with 80 grit sandpaper.
Mix degreasing cleaner with water in a bucket using a dilution recommended by the cleaner manufacturer.
It had the same rustic feel.
If so check out the classes at home depot lowes might also have them for tile installation.
Lay a level on the old tile and mark any high spots.
Then rinse the wall with a water dampened.
A couple other considerations are the on center o c spacing of the trusses.
On the add a device page choose tile for tile partner products follow the prompts on your device press the button on your tile device and listen for the tune.