Stone: Concrete - The concrete is the mixture of natural sand with a binder of cementitious. Concrete is a natural product so it is a porous material and can absorb moisture. The concrete tables are durable and coated with a PU coating, which makes the table well protected for outdoor use but we do recommend the items to be placed in a covered outdoor area. Wax the table regularly using a paraffin based stone floor wax, once within 2 months of receiving your item and then every 3-6 months. Hairline cracks can occur in concrete, if one appears, apply a thick layer of wax and rub in thoroughly to prevent moisture seeping in. Lavastone: Lavastone tops are enginereed as a strong natural composite, mixing lava dust with resin to create concrete-look furntiture pieces. Lavastone does not chip, crack, or break easily because of the composite nature of the material. The legs are powder coated aluminium. The Lavastone tops are resistant to UV and water but we recommend that they are placed under a covered alfresco area or covered when not in use. As this is a composite material, there will be colour and finish variations with our Lavastone products. *1 Year Structural Warranty offered on all stone furniture items*. >Light Terrazzo. The light weight terrazzo is a composite material which consists of marble, quartz, granite, and/or glass, and poured with a binder that is cementitious (for chemical binding), polymeric (for physical binding) or a combination of both.