TECH TIP TUESDAY: ASK MARK – 11/21/17
Contractor Member Question
Is there a way to determine what a stain on the surface of a tile is? We run into this problem every once in awhile. I currently have a job that has been complete for a few months and they have sent pictures claiming the spots are thinset, membrane or grout. I do not believe they are any of those things. Is there a way to tell? Please advise.