You can use a commercial acidic grout haze cleaning compound.
Ceramic tile haze remover.
Do not use this acidic cleaner on any types of acid sensitive tiles like marble travertine or limestone.
Try using a professional grout cleaner designed for epoxy grout haze.
Newly installed porcelain tile often has a white residue called grout haze eliminate the haze from your tile with instructions from a professional contrac.
Hardened grout haze on ceramic or porcelain tiles will require an acidic cleaner and a scrubbing pad to remove the grout haze.
A couple of well known brands are dupont and sci.
Epoxy grout haze can be difficult to remove with mild cleaners or scrubbing tools.
Be careful not to confuse grout sealer or grout cleaner with grout haze remover.
Using vinegar to remove grout haze is not a good idea when cleaning stone or other porous tiles however.
Heavy duty acidic cleaner is a fast acting heavy duty acid cleaner for textured non polished natural and manufactured surfaces.
Avoid using a green tile sponge as it may transfer color to the grout.
Removing the grout haze off of stone tiles will require using a non acidic grout haze remover product.
Diluted vinegar on porcelain or ceramic tile only and a nylon scrub pad and a commercial grout haze remover.
Before you start removing grout haze allow grout to harden fully.
You can also make a homemade grout haze cleaner using household vinegar.
Use a mop or spray bottle to apply the cleaner to the flooring then scrub each tile with a white tile sponge.