My first question is did you remove the caulk. If not it will continue to wick into the sandstone.  It may take many applications of a poultice to remove. I have had them take up to 15.  Keep poulticing. It may not come out if the caulk causing the staining is not removed.  Also use Methylene Chloride.<br>
<br><div class="gmail_quote">On Tue, Jul 24, 2012 at 10:40 AM, Adam <span dir="ltr">&lt;<a target="_top" href="mailto:info@restoreyourtiles.com" target="_blank">info@restoreyourtiles.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Partners,<br>
Over past few months I tried to poultice out siliconized calking stains out of sandstone. I was encouraged seeing improvement after first 2 applications (poultice with MEK) however the third one (HG oil remover from scc) and forth one (MEK again) did not produce any significant improvement. Is there anything else I can do or is it safe to say that it is permanent and farther applications will not work?<br>

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Adam Bartos<br>
BiO Tile &amp; Grout Restoration<br>
<a target="_top" href="tel:773-575-5515" value="+17735755515">773-575-5515</a> (c)<br>
<a target="_top" href="tel:847-438-0212" value="+18474380212">847-438-0212</a> (o)<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><img src="http://www.stoneforensics.com/stone-detective.png" width="200" height="129"><div>Frederick M. Hueston PhD<br><a target="_top" href="http://www.stoneforensics.com" target="_blank">www.stoneforensics.com</a><br>
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