Finish sanding the entire wall with 120 grit sand paper on drywall sanding pad.
How to remove one wall tile.
Be careful to cut away only the grout and not into the wall.
Fill drywall gouges with drywall joint compound and sand it smooth.
Tiles installed with thinset or another tile adhesive often require more work to remove them.
Move the nail set.
When you believe you have removed or cut away most of the grout stop and examine your work.
Work slowly and at about a 45 degree angle.
Allow to fully dry.
Once the tile is down take a 5 in 1 tool and scrapper to remove any excess grout.
In order to remove the adhesive from the back of the wall tiles you should use a scraper.
To remove wall tiles start by heating up the grout between the tiles with a blow dryer so it s easier to remove.
Periodically scrape adhesive off the exposed floor with a putty knife or a floor scraper.
For semi soft adhesive mastic use 120 grit sandpaper to remove it from the wall.
You should be able to slide a putty or plaster knife underneath the tile.
In some cases the only way to tear out the ceramic tile is with heavy equipment such as a jackhammer or air chisel.
To remove thinset use a stiff putty knife and some elbow grease to scrape it from the wall.
Always wear safety glasses when removing ceramic tile.
Position the tip of a nail set against the tile at the cracked or chipped area.
Use a ball peen or masonry hammer and cold chisel to tap the pieces free.
Tap the end of the nail set with a hammer to shatter the tile and pry the pieces off with a chisel.
The method used to attach the tiles to the wall affects the way the tiles come off.
Therefore you should use the same chisel to remove the adhesive from the wall by tapping it with a hammer progressively.
Then use a utility knife or rotary grinder to scrape away the grout until the spacer lugs between the tiles are visible.
Next use a chisel and hammer to pry the tiles off of the wall.
Last but not least you should remove the tile adhesive from the wall and from the back of the ceramic tiles.
Remove the tiles with a flat pry bar placing the edge low against the side of the tile and striking the base of the knife with a hammer.