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Sealing is a common step taken on some stones as an extra precaution against staining. In fact, the sealing products used in the stone industry are "impregnators" which do not actually seal the stone, but more correctly act as a repellent rather than a sealer. Sealing does not make the stone stain proof, rather it makes the stone more stain resistant. When consulting with your stone supplier, you may find that many stones do not require sealing. However, applying an impregnating sealer is a common practice. When considering sealing, remember that sealing the stone does not make the stone stain proof, it makes it more resistant to staining. If a sealer is applied in a food preparation area, be sure that it is non-toxic and safe for use. Consult with your supplier or sealing manufacturer to specify the type of sealer and frequency of use recommended.
Any questions or concerns with the above processes, please feel free to contact us.