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Help diagnosing mysterious orange stuff on grout
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Joshua Putnam
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In article ,
says...
You could check to see if it is rust by using a bit of any of many =
products that remove same. If it *is* rust I can't imagine where it is =
coming from.
Looks like the rust we used to get from our water -- high enough iron
content that it would produce rust stains on grout, sometimes even rust
spots on clothing in the wash if we used chlorine bleach.
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is Joshua Putnam
http://www.phred.org/~josh/
Books for Bicycle Mechanics and Tinkerers:
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