‚ÄčThis tile looks like a gray travertine. It etches and adsorbs water like limestone. When even a neutral ph product is used to scrub a spot it can leave a etch mark. Does any one have any ideas ¬†as to what it is and what could I do to fix the etch areas?
Thanks Tony

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Tony Warney
Excel Stone and Tile Care
www.excelstoneandtilecare.com
760-788-9400