What are the effects of humidity on the dimensional stability of WPC outdoor chairs?

Humidity plays a significant role in the dimensional stability of Wood Plastic Composite (WPC) outdoor chairs. WPC, a blend of wood fibers and plastic, is known for its durability and resistance to weathering. However, prolonged exposure to high humidity can cause the wood fibers within the composite to absorb moisture, leading to slight expansion. Conversely, in low-humidity conditions, the material may contract. While WPC is designed to minimize these effects compared to pure wood, extreme or fluctuating humidity levels can still impact the chair's shape and structural integrity over time. To mitigate these effects, it's advisable to choose high-quality WPC with improved moisture resistance and apply protective sealants. Proper maintenance and storage during extreme weather can also extend the lifespan of WPC outdoor chairs.