Although tiles provide a generally hard-wearing finish, a hard knock (when moving furniture for example) can crack or chip them. Replacing a single or even multiple tiles is a fairly simple task. Hopefully, when you laid the tiles, you kept a few spares for just his sort of situation. If you didn't lay the tiles, or don't have a spare, you will need to try to buy a matching replacement. Once you have removed the broken tile, take a piece to your local tile specialist so you can accurately match the colour and finish.
Masking off
Your first job is to mask off the tiles surrounding the one you are going to remove. This stops them getting damaged when you are working on the broken tile. Scrape out the grout from around the broken tile. Now stick some tape in the middle of the broken tile and drill three or four small holes in the centre. The tape will stop the drill bit slipping as you drill.
Chipping out
Using a small cold chisel or an old woodworking chisel, start to break up the tile, starting from the holes in the centre. Gradually work your way out until all of the tile has been broken up and removed. Take care near the edges or you risk dislodging the surrounding tiles as you work.
Removing Adhesive
Once the tile is out of the way, you need to get rid of the old tile adhesive so that the replacement tile sits flush in the hole. Do this carefully with a cold chisel to avoid damaging the wall behind. Once the wall is clean of adhesive, brush or vacuum out any dust.
Fixing the Tile
Apply your tile adhesive to the back of the replacement tile and press it carefully into place in the hole. Use tile spacers or matchsticks to ensure the gap around the edge is uniform. Leave this to dry into place for the recommended time and then apply the grout. Polish this off when it is dry and your tiled wall should be as good as new.
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