Put down a dust sheet. Then use a grout remover to remove the existing grout from between the tiles. Clean the tiles to remove any excess dust and dirt. Make sure you remove all the old grout.
Use a ready-mixed grout or mix up the tile grout following the instructions on the packet.
Use a grout float to spread the grout mix over all the areas that need to be filled.
When all gaps are full, go back over them with a sponge to even out the appearance of the grout. Also use the sponge to clean off any excess grout.
Finally use a grout finishing tool to give a professional finish and leave grout to dry as indicated on the packet.
Woodie's DIY will show you how to tile a floor. Tr...
Woodie's DIY will show you how to tile a splashbac...
Woodie's DIY will show you how to fix a cracked ti...
Woodie's DIY will show you how to tile a bathroom ...