Sunshine Coast-20110614-00128.jpg Mike Marsoun 13 Jun 2011 22:48 EDT
A complex that wanted waterproofinng of the grout. So someone came and mopped on a sodium siliconate sealer and it left this residue. I did samples with a stripper and black pad, weighted machine and it worked fine, but these balconies, it is thicker and not working. It is glazed ceramic with a non slip (glazed in glass bead) surface.
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