Hi, cleaned a Porcelaine non slip tiled floor today. Owners have always had problems with these tiles, in getting marks off and it generally getting dirty easily. Alkaline pre spray agitation and SX12 hardly touched it, so switched to Prochems acidic stone cleaner. This made a much better job with the general soil removal, mopping the acidic solution onto the tiles, then agitation and SX12. Tiles looked good until they dried with a white haze, worse in some areas than others.
My theory is that this is a case of grout haze that I have exposed by removing the layer of soiling.
The only other explanation I can think of but doubt, is that the acidic solution could have softened the grout lines to such a degree that it has been drawn across the tiles by the SX12. however going back and forwards with it giving a good rinse I cant see that as a reason.
What does anyone think, grout haze or grout drag?
Dave.
