It is not recommended to use Lilang Dark Grey Terrazzo outdoors. Terrazzo is a type of composite material that consists of marble, granite, quartz, or glass chips mixed with cement or epoxy resin. While it is a durable and long-lasting material, it is not suitable for outdoor use due to its high porosity. Outdoor exposure to moisture, rain, and extreme temperatures can cause the terrazzo to deteriorate, fade, or crack over time. It is recommended to use terrazzo in indoor areas where it can be protected from these environmental factors.