That looks really nasty-has anyone checked the moisture-First you need to find out what is going on here.
Looks to me like its below the surface-whatever it is.
Give us some background on when this started occurring.
That looks like a Damp staining issue. I don't think it is mold or mildew.
Using more water based chemicals may not be the answer until you find out whats happening under the stone.
If the client has extra tile you may want to lift one and see whats underneath.


On Mon, Oct 30, 2017 at 3:31 PM, "marblerenu@aol.com" (via sccpartners list) <nobody@simplelists.com> wrote:
M3 Tech - talk to Bob Murrell.

Tim Lesnar

Classic Marble Restoration

Sent from my T-Mobile 4G LTE device

------ Original message------
From: Anthony Godoy
Date: Mon, Oct 30, 2017 2:25 PM
Subject:Re: Mold on stone

We did use Klenzstone and it's not working. Where can we find Tio2? 

Anthony Godoy
Godoy Stoneworks and Tile Care
Www.godoystoneworks.com

On Oct 30, 2017 3:22 PM, "marblerenu@aol.com" <marblerenu@aol.com> wrote:
Hi all;
Have you tried Klenztone #4 or Ti02? Use it with a spinner tool.

Tim Lesnar

Classic Marble Restoration

Sent from my T-Mobile 4G LTE device

------ Original message------
From: Anthony Godoy
Date: Mon, Oct 30, 2017 2:08 P M
Cc:
Subject:Mold on stone

Hi partners, 

We have used several stone cleaners as well as chlorine on this stone. Nothing seems to be working on this. Does anyone have a suggestion what we can use to remove this? 

Thank you 

 
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--
Regards,
Stu Rosen
201-446-1200