Looks like it my be an efflorescene problem. You test for salts with a moisture meter. The procedure is on my blog<br><br><div class="gmail_quote">On Mon, Jan 3, 2011 at 2:43 PM, Dustin Fox <span dir="ltr">&lt;<a target="_top" href="mailto:foxmarine@gmail.com">foxmarine@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">I have a customer that has a light colored marble floor that she said will dull on its own. (see attached photo)<div>Is there any chance that the sub-floor was done wrong and is leaching something up through the tiles? </div>

<div>If yes is there anything we can do to test it or to slow it down?</div><div><br></div><div>They have been moping with a neutral cleaner so it should not be the soap, but...</div><div><br></div><div>Any ideas would be appreciated. </div>

<div><br></div><div>Sincerely,<div>Dustin Fox</div><div><br></div>--------------------------------------------------<br>Vallarta Stone Care<br>Puerto Vallarta, Mexico<br>619-819-6762 (US)<br>322-297-2670 (Mexico)<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Frederick M. Hueston PhD<br><a target="_top" href="http://www.stoneforensics.com" target="_blank">www.stoneforensics.com</a><br><a target="_top" href="http://www.stoneandtilepros.com" target="_blank">www.stoneandtilepros.com</a><br>
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