The answer to 'why is my tile discolored' is that tile discoloration can be caused by a variety of factors, including improper cleaning, mineral buildup, or even damage to the tile surface. Discolored tiles can appear faded, stained, or have an uneven appearance.
Some common causes of tile discoloration include using the wrong cleaning products, not sealing the tile properly, or exposure to acidic substances. Over time, mineral deposits from hard water can also lead to tile discoloration. In some cases, the tile itself may be damaged, which can cause it to become discolored.