I have about half the bathroom shower wall tiles removed for a repair job. I'm going to re-use them but need to get the old grout off. I soaked one tile in a 10% muriatic acid solution as a test and the grout came right off. The tile didn't look damaged, but will doing this cause any problems down the road. I mean will it cause adhesion problems when putting them back up. I'll be using a pre-mixed mastic.
Thanks for any tips.