Follow following steps -
1.Decide where to remove the grout
2. Scrape the grout away with a utility knife
3.Try a rotary grinder instead.
4.Remove grout until the spacer lugs are visible.
5.Chisel tiles away from the wall.
6.Break the tile if necessary.
If the tiles are grouted, you will have to clear the grout away first. There are inexpensive tools designed specifically for grout removal. After removing the grout, use a small pry bar or a similar tool to pry the tiles away from the wall. Most likely, though, if the tiles were installed onto drywall, the drywall will be damaged during removal. Fortunately, drywall is relatively easy to replace. Once the drywall surface is ready, new tiles can be attached with tile adhesive or mastic. Regrout and seal the tile around the new tiles. *If the new tiles are natural stone they will be very porous and will need to be sealed and dry BEFORE installation.
Perbaiki lantai teraso Teraso cor di tempat Terazo and mosaic tile