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Author: chicagostonepro Subject: is it savable?
Posted: 27 Dec 2006 at 11:49am
The cost involved in restoring this could be about the same or more than replacing it altogether.
If the coat is poly, the stone was acid-etched as part of that process. You may have noted the veins bulging (erupting) slightly above the surface, also. The stone, when closed off from air, can contain trapped moisture, and bacteria. Combine these with acid from the etching, and the stone loses it's integrity.
If there's been deterioration along the veins, the picture isn't good.
Regarding the acid-etch, this is done to give the poly better holding power. An experienced refinisher may be able to get calcium back into the material, (if it can't be honed back enough) so it can take a polish, however, to put that effort into this, again, is almost never cost effective. If the veins are all blown out, forget it.
That's why my first instinct is sledgehammer.
However, you subsequently posted you've had luck with a putty knife, so there's a chance the stone wasn't hit with acid - and, it might have even actually been fully dry prior to the plastic coating. If this is true, and the piece is large enough, well, then I guess the sledgehammer has to stay in the closet.
Yeah, in the closet. Chicago tradition. ;)
Regards,
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Marble Stains / Spots : is it savable? 
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