Grout haze is a very fine layer of cement, that’s inadvertently left to dry on the tiles during installation. This can be almost invisible and will trap dirt and dust, making your new tiles look dirty. Prevention is always better than cure, so it’s best to ensure grout haze doesn’t happen by thoroughly cleaning your tiles before any grout or adhesive fully sets. If you do experience grout haze, we’d recommend using a specialist grout haze remover product.