The types of composite decking include hollow and solid composite decking. While the former is a relatively lighter material with an artificial appearance, the latter is a heavier wood-like composite decking.
While the heaviness of the solid composite decking triggers its contraction and relaxation due to variations in temperature, the hollow type undergoes only slight contraction and expansion despite temperature changes. Due to its delicate nature, the hollow type is not as popular as the solid one, which is stronger. However, homeowners should protect both types of decking from harmful substances through preservative and fungi-killing chemical treatments for enhanced durability and longevity.