The answer to 'grout water damage' is that grout can become damaged and discolored due to water exposure, leading to mold, mildew, and cracking. Common causes include leaks, excessive moisture, or improper installation. Symptoms include crumbling, staining, or a spongy texture. Solutions may involve cleaning, resealing, or complete grout replacement, depending on the extent of the damage.
If the water damage is minor, homeowners may be able to DIY the repairs. However, for severe or recurring issues, it's best to call a professional cleaning or tile contractor to properly diagnose and address the underlying cause.