The answer to 'why is my tile stained' is that tile can become stained for a variety of reasons, including spills, hard water buildup, grout discoloration, and improper cleaning. Tile stains are common but can often be removed with the right cleaning methods.
Some common causes of tile stains include spills that were not cleaned up promptly, mineral deposits from hard water, mold or mildew growth, and improper use of cleaning products. The type of stain will determine the best solution, but many can be addressed through DIY cleaning. However, for stubborn or set-in stains, it's often best to call in a professional cleaning service to ensure the tile is properly restored without causing further damage.