I am working on testing some stone. One is calcutta marble and the other is a very porous limestone. Some spots were cleaned with soft scrub with bleach. The areas cleaned left an area that looked bleached out. The stone has been in stalled only 3 months. I have not been able to replicate the bleaching with their left over samples. The stone wa sealed with Dry Treat. My thought is that the Dry Treat sealer darkened and the soft scrub with bleach made the areas look bleached out.

Is this possible?

Tony Warney

Excel Stone and Tile Care

760-788-9400