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Unread 09-19-2008, 02:08 PM   #26
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Join Date: Oct 2007
Location: England
Posts: 6
In the UK we would dilute phosphoric acid and apply to the joint then rinse off and the apply AquaMix grout colourant.

search on the net for your nearest stockist and get some sent, its fantastic stuff & it wont discolour as its epoxy based
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