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.
Adding tile to existing tile.
A couple other considerations are the on center o c spacing of the trusses.
Scrub the wall tiles with diluted degreasing cleaner and a nylon scrub brush.
Out of all the tiles my client had collected this one was the clear winner for these reasons.
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.
Grind them down with a grinder.
It had the same rustic feel.
Sounds like this is a new adventure for you.
Then rinse the wall with a water dampened.
Tile loads are usually higher than 10 psf so chances are your trusses were not designed to account for this.
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.
Mix degreasing cleaner with water in a bucket using a dilution recommended by the cleaner manufacturer.
Open the tile app on your smartphone or tablet.
By adding cement board and tile to the floor you will be increasing the top chord dead load.
Hold the tile close to your device until they connect it should take about ten seconds.
It did not look like we had tried to match the existing tile and failed.
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.
It was relatively solid looking.
It was 13 x 13 the exact same size as the old tile.