There is a product that is Oxi-Clean on steroids from Simix called Oxi-One that and if you add an eraser pad with a Malish brush ( they both fit together) will melt this away and clean the grout fast.  If you want to test it go get some Oxi-Clean and a magic eraser pad and test it. Always mix powders with hot water in a small amount then add more hot water to finish the mixture after the powder is dissolved. 
Chad at Stone Care has all of this.
Kris
Marble Floors and More

On 2/28/2011 7:39 AM, Don Semi wrote:
Roger - The tool used by the grout cleaners, SX-12, attaches to a portable extractor if you have one. I know out here you can rent them. Power it up to 800 psi.

On Mon, Feb 28, 2011 at 6:29 AM, John Freitag <jfreitag@thestoneandtileschool.com> wrote:

Roger,

 

I would suggest using Oxi-Clean .mix up the product on the stronger side and mop on your floor allow the oxi-clean to dwell into the stone then go on the floor with your floor machine and scrub ,then vac this process works well.

 

Also if you have the pressure cleaning systems with the rotary head those work well also. I always tell my customer I cannot guarantee the pin hole will clean up totally. I do not recommend trying to fill them this is only a temporary fix and will come back to haunt you.

 

 

John E. Freitag

President/Director

The Stone and Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

 

schoollogo

 

www.thestoneandtileschool.com

 

 

 

From: Roger Konarski [mailto:qm144@yahoo.com]
Sent: Sunday, February 27, 2011 8:11 PM
To: Restoration and Maintenance
Subject: [sccpartners] Pin Holes

 

On a floor that I just cleaned, I was unable to remove the dirt in deep pin holes. The floor was Limestone.  I was thinking about floating a color match grout over the problem areas. Would appreciate any feed back or suggestions. Unfortunately I’m unable to attach pictures, they keep getting rejected by the system, I assume the file is too large.  

Thanks,


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Sincerely:

Don Semi
Certified Stone and Tile Inspector
www.srsdenver.com
srsdenver@gmail.com
303-249-7909

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Marble Floors And More
Kris Dougherty
3304 N Lindbergh Blvd.
Saint Ann, MO 63074
Cell - 314.503.3062
Fax - 314.298.1227