Ceramic Tile Advice Forums - John Bridge Ceramic Tile

Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet


Advertiser Directory
JohnBridge.com Home
Buy John Bridge's Books

Go Back   Ceramic Tile Advice Forums - John Bridge Ceramic Tile > Tile & Stone Forums > Cleaning, Restoration and Sealing

Sponsors


Reply
 
Thread Tools Search this Thread
Old 04-26-2004, 02:40 PM   #1
bobby brooks
Registered User
 
Join Date: Apr 2004
Location: tucson
Posts: 6
Question removing mineral (rust-like) stains from slate and grout

Is there a product that will get mineral stains (rust-like) off of slate and the grout between the slate tiles? Nothing I've tried to date has made any impact at all. Thank you.
bobby brooks is offline   Reply With Quote
Sponsored Links
Old 04-26-2004, 07:21 PM   #2
doitright
Retired Tile & Stone Contractor
 
doitright's Avatar
 
Join Date: Apr 2003
Location: Southern Florida
Posts: 11,576
Hi Bobby, Welcome!

What kind of slate do you have?

What kind/color of grout did you use?

What have you tried to clean it with?
__________________
John Koessler

"The bitterness of poor quality remains long after the sweetness of a low price is forgotten."

New to the Forum? - Check this out!
doitright is offline   Reply With Quote
Old 04-27-2004, 11:29 AM   #3
bobby brooks
Registered User
 
Join Date: Apr 2004
Location: tucson
Posts: 6
Question removing mineral (rust-like) stains from slate and grout

John: This slate was installed about 4 1/2 years ago by a local area contractor who came up from Nogales, Mexico.

I'm not sure what kind of slate it is -- it came from Mexico and a friend thinks it is called cantera.

The grout is a light gray in color and I don't know what kind of grout it is.

At the suggestion of my neighborhood hardware store, I tried a Clorox bleach pen and then, when that made no dent, I they recommended CLR -- again, no dent.

Hence, my internet search for help.

bobby brooks is offline   Reply With Quote
Old 04-27-2004, 12:43 PM   #4
Michael Meyer
Registered User
 
Join Date: Jun 2003
Location: N Tonawanda NY
Posts: 73
Hi bobby sorry to give you some bad news, I think your iron oxide may be permanent. Iron oxide staining is difficult to impossible to remove even in an optimum condition, however when sodium hypochlorite (bleach) is used the rust like staining becomes permanent. Sorry Michael of Stonehenge
__________________
Stonehenge Restoration - >>>> We Repair Stone the Right Way !1 - 716 - 693 - 4773
Michael Meyer is offline   Reply With Quote
Old 04-27-2004, 12:57 PM   #5
Steven Hauser
STT Owner
 
Steven Hauser's Avatar
 
Join Date: Mar 2003
Location: Greenville, South Carolina
Posts: 5,156
Hi Bobby,

The other potential is that the rust like stains are actually Pyrite. If that is the case then it too is permanent. Many slates and quartzites contain pyrite.



My.02
__________________
Clean
Sealed
Safe
Products and Practices Perfected™
STT Sealers with Attitude!®
Steven Hauser is offline   Reply With Quote
Old 04-27-2004, 06:42 PM   #6
bobby brooks
Registered User
 
Join Date: Apr 2004
Location: tucson
Posts: 6
Question removing mineral (rust-like) stains from slate and grout

Michael and Steven: Thanks for your responses. I only tried the bleach on a very small section of the grout -- so, that is the only area that will be permanent for that reason. Any other thoughts on things to try? Also, still want to seal. I have this slate in different shower areas. Thank you.
bobby brooks is offline   Reply With Quote
Old 04-28-2004, 07:36 PM   #7
Mike2
Registered User
 
Join Date: Nov 2003
Location: LaConner, Washington
Posts: 13,694
Michael/Steven

In the marine industry we use Oxalic acid in a gelled format to remove severe rust stains from gelcoat (very effective). Would this have any chance of working on these slate/iron oxide stains? [Realizing full well that in time they will most likely reappear]
Mike2 is offline   Reply With Quote
Old 04-29-2004, 05:22 AM   #8
John Bridge
Mudmeister
 
Join Date: Mar 2001
Location: Houston, Texas
Posts: 67,297
Send a message via AIM to John Bridge
No stone expert here, but I would imagine the "rust" is emitting from the stone. I don't think it's going to go away. And in a shower?
John Bridge is offline   Reply With Quote
Old 04-29-2004, 06:00 AM   #9
Maurizio Bertoli
Guest
 
Posts: n/a
You're damn straight, JB!
Cantera stone is one of the crappiest stone on earth! 4 1/2 years installed? I believe it's world record!! All others got rid of it much sooner!!
But, oh, I forgot ... you're going to seal it ...
Oh well ... then everything is going to be all right!!
(Yeah, right!!)
Ciao and good luck,
  Reply With Quote
Reply

Stonetooling.com   Tile-Assn.com   National Gypsum Permabase


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 08:28 PM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC