My client has a Limestone floor that was installed about a year ago.  Some of the stones are turning dark, others are not.  In some areas al the Limestone is turning dark.  The homeowner used Miracle Sealants 2 part poultice.  It required 5 applications and scrubbing to lighten the stones.  Honing did not lighten the stones.  The Limestone was sealed with 511 Porous Plus after it was installed.  There is a moisture barrier and the thinset used was white.  We are trying to figure out a way to clean and lighten the stone to its original color.  Miracle Sealants 2 part liquid poultice is very harsh and melts both blue and vinyl tape.  Any ideas would be appreciated.<br clear="all">
<br>-- <br><div>Tony Warney</div><div>Excel Stone and Tile Care</div><div><a target="_top" href="http://www.excelstoneandtilecare.com" target="_blank">www.excelstoneandtilecare.com</a></div><div>760-788-9400</div><br>