Penetrating Sealants

Why seal stone and grout?

Stone is naturally porous, some more than others.  Any liquid spilled on an unsealed stone can slowly seep into the stone, unless the stone has been sealed. If the liquid is colored, it can chemically interact with the stone or a trace element within the stone, or has the potential to attract dirt, it also has the potential to stain your stone.  By sealing the stone you effectively seal these pores preventing the spill or liquid from soaking into the stone and forcing it to remain on the surface where it can be cleaned up and removed from the stone.


How often should your stone be sealed?

Stone sealers will breakdown in the presence of natural UV light (sun light) or when cleaned with harsh cleansers (Alcohol, deliminine).  As the sealer is removed or breaks down so does your stone’s stain protection.  For this reason it is recommended that you seal your stone, tile and grout surfaces at least every 2-years, and more frequently in areas of high sunlight or wear.

What happens if the stone is NOT sealed?

If not sealed, and the stone becomes stained, you are faced with either replacing the stone or an expensive time consuming effort to remove the stain with no guarantee of success.  Stain removal is one of the only services that most stone craftsman will NOT guarantee.  In order to remove a stain, one must identify and prepare a chemical poultice designed to remove the spill material. The poultice must be left in place for a period of time, it can be encapsulated with a plastic to expedite. The poultice will begin to draw out the stain.  This process may have to be repeated one to three times and in some cases as many as 10 times before the stain is completely removed.  While the poultice is down this surface cannot be used, as such one may lose the use of a counter or floor area for several days.  Further in many cases, the chemical cocktail includes aggressive solvents or odorous chemicals.  Some chemicals may even damage the stone; requiring restoration after the stain is removed to return the stone’s original finish.

Stain removal can be quite expensive if done by a trained stone professional due to the numerous trips required to set-up and then remove-and-clean the affected area.  Expect to pay several times the cost of sealing should you encounter a broad area stain problem.

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