SANDSTONE — is mined (cut) from rocky beds formed millions of years ago. These rocky slabs are then machine cut to size, its texture and hardness are attributed to its origin. Sandstone consists of sand bonded together with minerals such as silica, clay and iron oxides by mother nature. Some sandstone even contain fossils of plants. Sandstone has natural earthy appeal and is available in many colours (light creams to deep reds) and sizes. No two sandstone tiles are alike. Sandstone has excellent anti-slip properties making it suitable for use on patios and pool surrounds. Sandstone is available in its rough natural finish through to honed (smooth and matt) to polished (smooth and gloss). Sizes vary from 150mm x 200mm to 600mm x 600mm tiles. Sandstone is generally very porous and needs to be sealed with suitable sealers. There are two recommended sealers for sandstone. They are HP Sealer and Top Seal. Top Seal will not change the colour of the tile (which is important in this type of tile), and will have a satin finish. HP Sealer will colour enhance the tile and sometime cause the tile to acquire a greenish tinge. That is why it is important to test in an inconspicuous area before sealing the whole floor. Natural Stone Sealer Matt and Natural Stone Sealer Satin can also be used for colour enhancement
LIMESTONE — is very similar to sandstone in almost every aspect, except that it consists mainly of calcite so it is particularly sensitive to acids.