Why are PVC outdoor bar stools prone to discoloration under prolonged sun exposure?

PVC outdoor bar stools are popular for their durability and affordability, but they often suffer from discoloration when exposed to sunlight for extended periods. The primary reason for this is the material's sensitivity to ultraviolet (UV) rays. PVC (polyvinyl chloride) contains additives and plasticizers that can break down under UV radiation, leading to fading or yellowing. Additionally, prolonged sun exposure causes the surface to degrade, making it more prone to color changes. To mitigate this, manufacturers may apply UV-resistant coatings, but over time, even these can wear off. Choosing high-quality PVC or alternative UV-stable materials can help maintain the stool's appearance longer. Regular maintenance, such as cleaning and using protective covers, can also reduce discoloration. Understanding these factors ensures better care for your outdoor furniture.