This looks like some major damage caused by excess moisture. I would first find out if the installation is solid by performing a sounding test. The second thing I would do is check the water and see if its hard. If it is, it will only return. You can attempt using the acid but until you find out what caused this problem it may return.<br>
<br><div class="gmail_quote">On Tue, Aug 16, 2011 at 7:22 PM, stuart rosen <span dir="ltr">&lt;<a target="_top" href="mailto:mail@stoneshine.com">mail@stoneshine.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div>Hey Stu,</div>
<div>Dont get the C-4 just yet!</div>
<div>I think its one of those floors that needs some testing-I think that mikes thoughts with the nylo grit brushes and an acid solution following up with a good color enhancing is one way to try. </div>
<div>Prosoco&#39;s sure clean lime solvent is a concentrated acidic cleaner as well. I cant see in the pic if the joints still have grout in them but if thats the case it may be possible to cut new joints or just refill them. You can test a small area with the brushes and see if you can get below the damaged areas. You can also try using diamonds starting with maybe 120 coppers or metals.</div>


<div>Yeah I know grind slate-Hey I like a little cleavage as much as the next guy! But it might just work-of course the slate will be flat but after a good color enhancing it will have its color back.</div>
<div>I was always told that spalling floors will fail no matter what you do-we have ground a couple of small floors that were spalling and refilled them and years later they are still in use. The customers did however end the water /moisture issues that created the damages in the first place. I havent done a slate floor that was spalling . But you can grind a slate floor.</div>


<div>Lets see what fred has to say about this .  <br><br></div><div><div></div><div class="h5">
<div class="gmail_quote">On Thu, Aug 11, 2011 at 4:59 PM, Stuart Young <span dir="ltr">&lt;<a target="_top" href="mailto:santafefc@sbcglobal.net" target="_blank">santafefc@sbcglobal.net</a>&gt;</span> wrote:<br>
<blockquote style="border-left:#ccc 1px solid;margin:0px 0px 0px 0.8ex;padding-left:1ex" class="gmail_quote"><u></u>
<div bgcolor="#ffffff">
<div><font size="2" face="Arial">Stuart,</font></div>
<div><font face="Arial"></font> </div>
<div><font face="Arial">So you didn&#39;t think it looked clean? Neither did I.  At any rate, it is a bathroom floor. We don&#39;t think it is efflorescence, so maybe it is spalling, in which case, what should I use, dynamite?</font></div>


<div><font face="Arial"></font> </div><font color="#888888">
<div><font face="Arial">Stuart Young</font></div>
<div><font face="Arial">Santa Fe Floor Care</font></div></font>
<div>
<div></div>
<div>
<blockquote style="border-left:#000000 2px solid;padding-left:5px;padding-right:0px;margin-left:5px;margin-right:0px" dir="ltr">
<div style="font:10pt arial">----- Original Message ----- </div>
<div style="font:10pt arial;background:#e4e4e4"><b>From:</b> <a title="mail@stoneshine.com" href="mailto:mail@stoneshine.com" target="_blank">stuart rosen</a> </div>
<div style="font:10pt arial"><b>To:</b> <a title="sccpartners@stoneandtilepros.com" href="mailto:sccpartners@stoneandtilepros.com" target="_blank">Restoration and Maintenance</a> </div>
<div style="font:10pt arial"><b>Sent:</b> Monday, August 15, 2011 9:19 PM</div>
<div style="font:10pt arial"><b>Subject:</b> RE: [sccpartners] Slate Floor</div>
<div><br></div>
<div>Good Grief</div>
<div>Yes-call 1-800-GOTJUNK!</div>
<div>Sorry-Just Kidding!</div>
<div>Well it does look clean!!</div>
<div>Seriously-</div>
<div>The floor looks bad-is it inside,outside, basement, patio? Flooding.</div>
<div>Is it just efflorescence or is it spalling?</div>
<div>Are there grout lines?or is there any grout in the lines</div>
<div>Does the surface feel rough?</div>
<div> </div>
<div> </div>
<div> </div>
<div><br><br> </div>
<div class="gmail_quote">On Mon, Aug 15, 2011 at 7:33 PM, Stuart Young <span dir="ltr">&lt;<a target="_top" href="mailto:santafefc@sbcglobal.net" target="_blank">santafefc@sbcglobal.net</a>&gt;</span> wrote:<br>
<blockquote style="border-left:#ccc 1px solid;margin:0px 0px 0px 0.8ex;padding-left:1ex" class="gmail_quote">
<div bgcolor="#FFFFFF">
<div></div>
<div><span style="font-size:medium">I cleaned this floor this afternoon but I had little success. Can anyone help me with this one?</span><br><br><img src="/sccpartners/cache/1465299/2.JPG" width="300" height="401"></div>


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