PVC doors are made from polyvinyl chloride, offering strong moisture resistance, lightweight construction, and low maintenance, making them ideal for humid environments. Melamine doors feature a decorative resin-impregnated surface applied over MDF or particleboard, providing scratch resistance and design versatility at a competitive cost. The key differences between PVC and melamine doors lie in material composition, durability, water resistance, surface finish, and best-use applications in residential and commercial interiors.