Tile and Grout Cleaning: How Professionals Distinguish Staining from Deterioration

https://alpha-wiki.win/index.php/Tile_and_Grout_Cleaning:_How_Professionals_Distinguish_Staining_from_Deterioration

When tackling tile and grout cleaning, pros often spot the difference between staining and deterioration by checking the grout's integrity first; if it crumbles or is soft, it's deterioration, not just a stain, and requires repair before any cleaning.