The answer to 'patio yellowing' is that the most common causes are mineral deposits, sun exposure, and improper cleaning. Mineral deposits from hard water can leave a yellowish stain on concrete or stone patios. Excessive sun exposure can also cause the surface to fade and take on a yellow tint. Additionally, using the wrong cleaning products or techniques can dull the patio and lead to a yellow appearance.
To address patio yellowing, you can try DIY cleaning methods like using a mild acid-based cleaner or power washing. However, if the staining is severe or the patio is made of delicate materials, it's best to call in a professional landscaping or patio cleaning service. They have the right tools and expertise to safely restore the patio without causing further damage.