Posted: Thu Jul 12, 2018 8:16 pm
Hi could anyone help ? I had these slabs laid about a year ago and they have this kind of brown discolouration , I have tried all of the methods recommended but nothing seems to shift it , any ideas what it is ? Thanks.
http://oi66.tinypic.com/r1zb47.jpg
http://oi66.tinypic.com/r1zb47.jpg
