The simple answer to this is Yes you can. You need to use a grout colouring product such as Grout Renue ‘N’ Seal. This product can be applied to any grout and it will bond to the grout but not to the tiles themselves. It is very simple to apply and you wash off the excess with just plain water. It can be used on floors, walls and worktops either internally or externally. Grout Renue ‘N’ Seal also effectively seals your grout for up to 15 years for domestic use.

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