Iron out can help but it might not be rust stains...it could be the minerals of the slate.
What kind of slate is it?
Try using mild solution of an acid based cleaner, however the rust may come back. There are some slates that have a natural iron deposit in them and the rust will never be removed.
Caution is to be used when using the acid based cleaner on the slate.
John E Freitag
Director
The Stone & Tile School
Office 407-567-7652
Cell 407-615-0134
jfreitag@thestoneandtileschool.com
From: Hector Castillo [mailto:Hectorcastillo@comcast.net]
Sent: Sunday, February 05, 2012 11:23 PM
To: Restoration and Maintenance
Subject: [sccpartners] Does anyone know how to get rust out of slate. outside on a deck?
Customer wants some help with removing rust from Slate.
Jobs out of state.
Hector Castillo
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