check with Prosoco...they have several that may work. Typically you cant use one that works on calcium.

On Wed, Aug 31, 2011 at 7:13 AM, Mike Marsoun <nulifesc@bigpond.com> wrote:

Has anyone tried a sodium silicate densifier on sandstone. Looking for something to fill the pores on interior sandstone which is being used in kitchens, will not stay clean even after impregnated. I don’t want to have to coat it.


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