The answer to 'why is my grout water damage' is that there are several common causes, including improper installation, excessive moisture, and deterioration over time. Symptoms of grout water damage can include cracked, crumbling, or discolored grout, as well as water pooling or leaking around tiles.
To address grout water damage, you may be able to DIY by re-sealing the grout or replacing damaged sections. However, for more extensive issues like structural damage or mold growth, it's best to call in a professional cleaning or restoration specialist to properly assess and fix the problem.