Epoxy Removal (black grout stains) from Unglazed Products
The film of epoxy grout will not come off with an acid cleaning. The epoxy cures quickly and cleaning needs to be attempted within no more than 48 hours of grouting sooner better.
When using a dark grout on an unglazed paver or unglazed quarry product the tile should be sealed in advance with a penetrating […]







