The customer cleaned the grout themselves and then applied the sealer. Unfortunately, I don’t think the grout was cleaned very well. I went over it twice with a high ph alk with a spinner and no luck. I’m hoping to find a way to strip it, clean it again and reseal.
Cleaned customers tile today and was not pleased with the results. I asked if there was a sealer used and turned out there was. She just sent me the info of the sealer used. I searched and got a few ideas what to use but am hoping someone knows of a product that will remove this particular sealer.