I see a lot of this with white marble in wet areas- more common for small rust marks around a vanity, shower saddle or the toilet.
Every once in a while I see a major rust issue within a shower stall area.
Have seen 1920 era white marble installations without a trace of oxidation.
Have seen 6 month old installations loaded with oxidation issues.
I agree with Randy-and it happens enough that the industry is aware of it so consumers should be forewarned.
Wouldn't hurt for the consumer to be educated. Easy enough to google info for potential stone they are looking at.



On Tue, Apr 7, 2015 at 10:21 PM, Randy Frye <rfrye@comcast.net> wrote:
I don't think it falls back on anyone its just what some of that stone does. I would think the person selling it would have the decency let people know there is that possibility.


On Apr 7, 2015, at 6:11 PM, Tony Warney <tony@excelstoneandtilecare.com> wrote:

I had customer ask me about iron in Marble.
They have a Carrera Marble that is showing  a lot of iron discoloration.
The shower is less than 2 years old. Their friends have the same type of shower
bout 3 years old with no signs no discoloration. Is there any way to tell if iron damage
could occur before buying it?  Is any one responsible if it does occur in a short
period after installation? Such as the supplier builder?
--
Tony Warney
Excel Stone and Tile Care
760-788-9400
 
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--
Regards,
Stu Rosen
201-446-1200
www.stoneshine.com
www.mbstonecare.com
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"EVERYTHING MATTERS"