The answer to 'why is my upholstery discolored' is that there are several common causes, including sun exposure, spills or stains, and general wear and tear over time. Discoloration can manifest as fading, yellowing, or uneven color changes across the fabric.
Sun exposure is a major culprit, as UV rays can break down the dyes and fibers in upholstery over time, leading to fading and discoloration. Spills and stains that are not properly cleaned can also cause permanent discoloration, as can the buildup of dirt, oils, and other contaminants. Finally, regular use and age can simply cause upholstery to lose its original color and vibrancy.