Once it has been installed, the sheen on Silestone is the natural sheen/luster of the product itself. Sealants and water repellents provide an artificial, ephemeral shine. Do not use paint strippers, caustic soda, or products with a ph of more than 10. If bleach or solvent is used, it should be diluted with water and never left in permanent contact with the product.
Silestone® is the only brand that offers a certified warranty, in writing. Only a global leader could once again draw ahead of the pack and offer a genuine 25-year transferable warranty for Silestone®. Cosentino, S.A. warrants to the residential owner-occupants of installed Silestone® quartz surfaces (“Silestone® Surfaces”) that for a period of twenty (25) years from the date of installation of the Silestone® Surfaces in your single family residential home, that the Silestone® material will be free from manufacturing defects. If a manufacturing defect occurs during the warranty period, Cosentino, S.A. will at its option, repair or replace the defective Silestone® Surfaces.
What this limited 25-year warranty covers:
This limited transferrable warranty covers Silestone® Surfaces that have been purchased from an Authorized Silestone® Installer or Dealer (“Authorized Installer”) and have been permanently installed in your single family residence by an Authorized Installer. This limited transferrable warranty covers products that have been maintained according to the Silestone® Surfaces Care and Maintenance and Integrity Sink Care and Maintenance set forth on www.silestoneusa.com.