Hi. We recently touched up a blue-black slate counter that the owner had been treating with linseed oil. The linseed oil created a heavy build up, which we removed and then applied a color enhancing impregnating sealer. The result was great. However there were some white rings and spots that were in the stone (within the stone, not on the surface - like stun marks in marble). After a couple of weeks the white spots are coming back and I am going to apply a little more of the impregnating sealer to see if that subdues them. But I am wondering if there is some sort of treatment I can use on these little areas that will be more permanent and will not require constant touch up.
Thanks much.
Baird
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From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
1616 Walnut St.
Philadelphia, PA 19103
Phone: 215-732-7505
Fax: 215-546-9160