As a Brazilian quartzite, Stonewood is a robust hard rock with low water absorption (0.25 %), full acid resistance and a Mohs hardness of 7. Wine, lemon juice, vinegar, cola, sanitary cleaners or descalers leave no etch marks as they would on marble or limestone — the stone is markedly easier to care for and well suited to intensive everyday use.
For internal applications we recommend a sealing treatment based on silane or polysiloxane at first installation. On polished quartzite surfaces, 5-10 years can pass between refreshes of the sealing treatment depending on use; on heavily used kitchen worktops, check it every 2-3 years. Sealing protects against deep penetration by oil, grease and pigments — otherwise discolouration can show up on the lighter areas of Stonewood's heterogeneous timber-grain surface.
Day-to-day care is carried out with a pH-neutral natural stone cleaner and a soft cloth or microfibre mop. Clear warm water is usually sufficient. Acidic cleaners are in principle unproblematic, but should nevertheless not be used, because they can attack the sealing treatment. The finishes currently available from stock are listed in the »Finishes« block further down this page.
For kitchen worktops, Stonewood is very well suited: cut- and scratch-resistant, insensitive to heat (hot pots and pans can be set down directly for short periods, though longer exposure to heat above 200 °C should nevertheless be avoided), acid-resistant and with good stain repellency. The high flexural strength (25 MPa) supports overhangs and longer unsupported sections of slab. The expressive timber-grain surface conceals small signs of use remarkably well — small scratches and water marks disappear into the powerful slab image. For external applications, Stonewood is frost-resistant and weather-stable over the long term thanks to its low water absorption. Polished external surfaces can show minimal losses of gloss after years in positions heavily exposed to UV — the warm brown tone remains UV-stable over time. The finishes currently available from stock are listed in the »Finishes« block further down this page. In areas with frequent contact with salt (road salt, pool chlorine) we recommend an additional annual refresh of the sealing treatment.