The answer to 'why is my upholstery water damage' is that there are several common causes, including spills, leaks, and excessive humidity. Symptoms may include visible water stains, swelling or warping of the fabric, and a musty odor. Solutions can range from DIY cleaning and drying to professional upholstery restoration, depending on the severity of the damage.
For minor spills or damp spots, you may be able to blot the area with a clean, absorbent cloth and allow it to air dry. However, for more extensive water damage or if the upholstery remains damp for more than a day or two, it's best to call in a professional upholstery cleaning service. They have the specialized equipment and expertise to properly clean, dry, and restore your upholstery to prevent further damage or mold growth.