Mix degreasing cleaner with water in a bucket using a dilution recommended by the cleaner manufacturer.
Adding tile to existing tile.
Sounds like this is a new adventure for you.
Lay a level on the old tile and mark any high spots.
Tile loads are usually higher than 10 psf so chances are your trusses were not designed to account for this.
Hold the tile close to your device until they connect it should take about ten seconds.
Roughen the tile with 80 grit sandpaper.
By adding cement board and tile to the floor you will be increasing the top chord dead load.
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.
It was 13 x 13 the exact same size as the old tile.
Tap the on the top left corner of your screen.
Then rinse the wall with a water dampened.
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 relatively solid looking.
Open the tile app on your smartphone or tablet.
Grind them down with a grinder.
It had the same rustic feel.
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.
Layer newspaper on the floor across the bottom of the tiled wall.
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.