Grout Staining vs. Deterioration: Key Differences in Tile and Grout Sealing

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Grout staining and deterioration often look similar but require different fixes. Staining is surface discoloration from spills or moisture—usually fixed with cleaning and sealing. Deterioration involves crumbling, cracking, or missing grout, which needs repair or replacement before sealing. Sealing after staining prevents future issues, but sealing over worn grout locks in damage. Understanding the difference ensures you seal durable, not decaying, surfaces.