Georgia,

 

Sorry I didn’t get a chance to call you back last evening, my cell died ( too much use yesterday.

 

The black , was this apparent at all when you started the job?

 

From the pictures it almost looks like a black mold along the grout line. Have you tried cleaning with Bleach ? it could be that simple, if it’s some type of mold.

 

Is it possible to send another picture with more of a close  up shoot.

 

Have you tried taking a hand grout saw a scrap the dark area? if so did you remove the dark areas?

 

If you can reply to these questions this morning a can give you some additional suggestions later today, I have a 9:00 AM appointment and should be back in my office by around 10:30 AM and will call  you and follow up on you r reply.

John E. Freitag

President/Director

The Stone and Tile School

Office 407-567-7652

Cell 407-615-0134

jfreitag@thestoneandtileschool.com

 

 

www.thestoneandtileschool.com

 

 

 

 

I am on a job site right now working on a travertine project.  The installer had used sanded grout, then applied a color enhancer without getting all the haze off, then used an acid based cleaner to try to remove the haze and then sealed it with an impregnator...great, huh?  Well the travertine turned an orange (ish) color.  We removed the sanded grout, filled with an un-sanded grout, removed the lippage, grouted again, honed to 250 grit, grouted again, used a 400 grit honing powder and have been cleaning up.  We got rid of the orange color and returned the stone to its original color.

I noticed these black marks on the edges of most of the grout lines.  They are not gaps in the grout, they are black marks.  I have no clue where they came from.  What would you suggest I use to remove the marks?

Thanks All

Georgia Rivera
Stone Buff

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