What are the differences in thermal expansion between WPC and terrazzo outdoor tree boxes?

When selecting materials for outdoor tree boxes, understanding thermal expansion is crucial for long-term durability. Wood-Plastic Composite (WPC) and terrazzo exhibit distinct behaviors under temperature changes. WPC, a blend of wood fibers and plastic, tends to expand and contract more significantly with temperature fluctuations due to its plastic component. In contrast, terrazzo, made from a mix of aggregates and cement, has minimal thermal expansion, offering greater dimensional stability.

WPC's higher coefficient of thermal expansion means it may warp or crack over time in extreme climates, requiring proper installation gaps. Terrazzo, however, remains stable, making it ideal for areas with wide temperature variations. Both materials have merits, but terrazzo outperforms WPC in thermal resistance, while WPC offers easier customization and lighter weight. Consider your climate and project needs when choosing between these materials for outdoor tree boxes.