Determining whether you should deep clean your grout or completely regrout depends entirely on the underlying condition of the material rather than surface discoloration alone. If your grout lines are simply discolored by surface dirt, mildew, or light stains but remain structurally solid, smooth, and crack-free, a thorough cleaning using a hydrogen peroxide paste or professional steam cleaner will restore them beautifully. However, if the grout is severely cracked, crumbling, pitted, missing chunks, or heavily stained due to deep moisture infiltration, cleaning will not solve the issue, and regrouting becomes necessary to protect the structural integrity of the tile installation.
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