Sandstone is a sedimentary rock that has been used as a building and flooring material for millennia. Composed of compacted particles of sand, sandstone is a cost-effective choice, especially for exterior paving, paths and patios. The nature of the material means that customers should expect a high degree of colour and shade variation in the material. Most of John Samuel's sandstone is supplied as patio packs containing a mix of tile sizes for laying in a grand opus pattern. All sandstone should be sealed after installation.