Adam

Test to see if it is rust-I would sand off using low grit sandpaper or electroplated pads 

Then reassess.

On Thu, Apr 7, 2016 at 12:30 AM, Hector Castillo <hectorcastillo@comcast.net> wrote:

If it was me look at the finish.  If you don't know try like 220 adjust from there. if you see to flat go higher in grit 340 . If you need it less go 180 or 120 or 100. Hector Castillo 

Sent from my Verizon Wireless 4G LTE smartphone

-------- Original message --------
From: Adam Bartos <info@restoreyourtiles.com>
Date: 04/06/2016 8:13 PM (GMT-08:00)
To: sccpartners@stoneandtilepros.simplelists.com

Subject: RE: Stains on limestone - urgent

John and Randywcbc@cs.com, what grit(s) would you recommend?

On Apr 6, 2016 7:20 PM, "John Freitag" <jfreitag@thestoneandtileschool.com> wrote:

I have successfully removed dark spot from limestone by dry sanding.

 

It not un common for some limestone darken when they become too wet. In this case dry sanding has worked.

 

 

John E Freitag

 

John E Freitag

Owner/Director

The Stone & Tile School

Office 407-567-7680

Cell 407-615-0134

 

 

 

www.thestoneandtileschool.com

 

 

 

From: list-manager@stoneandtilepros.simplelists.com [mailto:list-manager@stoneandtilepros.simplelists.com] On Behalf Of Randy Frye
Sent: Wednesday, April 06, 2016 8:26 AM
To: sccpartners@stoneandtilepros.simplelists.com
Subject: Re: Stains on limestone - urgent

 

Maybe try sanding it out if it's just on the surface   

Best Regards,

Randy Frye, CEI Surface Pros

www.ceisurfacepros.com

239-253-1991

On Apr 5, 2016, at 10:38 PM, Adam Bartos <info@restoreyourtiles.com> wrote:

Last week we cleaned limestone walls and floors for the residential customer  using our truck mount. We came back yesterday to seal the floor and were surprised by the look of one slab, with one continues stain at the bottom.  It lookes like iron oxidation and it is only 1 slab out of 6. We tried iron out but that didn't help. 
Any idea why something like that happened?
What can I use or do to remove it?
I am going back there on Thursday and I need your  help very badly. I am puzzled and without any ideas. I am attaching picture for u to see it.
Thanks
Adam Bartos
BiO Tile

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Regards,
Stu Rosen
201-446-1200

www.mbstonecare.com

www.stoneshine.com

www.mbstonepro.com

"EVERYTHING MATTERS"