How Do I Clean Black Spots from Grout on Quarry Tile?
It's one of the most frustrating yet common quarry tile problems: black spots that build up on the grout. Top floor care brands have tried everything from acids and high-alkaline strippers to address this problem, yet it took years of development to find the right result.
Aqua Mix Grout Haze Clean-Up has long been used as an aid during final grout cleaning following a grouting application. It can also be used, undiluted, in the cleaning of black pigment from cementitious grout on quarry tile. The Aqua Mix team determined this to be an effective process to allow users to easily wipe away black pigments with minimal effort using a white scrub pad, like the 3M White Doodlebug Pad. The formula is unique in that it's not harmful to new grout and won't damage your old grout. Consider this alongside some of the top-quality tile and grout cleaners from 1877FloorGuy for your regular tile and maintenance care system.
Test this use for cleaning cementitious grout in a small area, prior to full use, on the quarry tiled surface. This will give you a chance to see if the result meets your expectations and to adjust the amount of grout cleaner to use for this particular situation.