Understanding Professional Grout Cleaning vs. Grout Deterioration
https://lima-wiki.win/index.php/Understanding_Professional_Grout_Cleaning_vs._Grout_Deterioration
I often get calls from homeowners worried about their grout looking rough, but telling the difference between a grout cleaning issue and actual deterioration is key. Professional cleaning can often restore grout that's just stained or slightly worn, while crumbling, cracked, or powdery grout usually means it's deteriorated and needs replacement. A quick scrape test helps: if it holds up to gentle scraping, cleaning might be all it needs.