RE-GROUTING TILES
This is one of those less desirable DIY tasks, if the grout has become discoloured and won’t clean up using the various cleaning solutions that are available in the shops, the only option left is to re-grout the joints.
The existing grout needs to be removed, Ideally to a depth of around 3 to 4 mm using a grout removing tool (see below). Use a protective sheet to cover worktops, baths and sinks etc.
Grout removing tool blades can be changed for new ones as they wear down, take care not to damage the edges of tiles whilst removing the old grout. When all the old grout has been removed, clean the tiles with a damp cloth and let them dry out. New grout can now be applied (see grouting section)