How to Clean Grout on Tiles
Grout is the stuff that holds your ceramic tiles together. Unfortunately, it can be a little too good at its job and tends to also hold on to moisture, stains, and dirt. Even if you clean your tiles well, your initially pristine, white grouting can quickly become grey and dingy.
If it isn’t already, the first thing to do is get your grout sealed. (Tile-layers will often seal tile and grout at once.) Make sure to avoid a silicone seal that extends over the tile surface itself – this can ruin the glossy finish and will often wear off in patches.
If your grout is already dirty, all is not lost – grout staining products are available from most home maintenance stores, and these can help to restore some of the original colour.