I across the idea of "Anti-Slip Tile Ratings and Grades". Has anyone had R11 rated Porcelain tiles installed outdoors? I am interested to know if they are safe to use in the UK where it rains all the time and frost can happen in the winter.

  • Nothing works on ice, all bets are off. R11s should be about OK, 12s would be better [13s all look like the floor in a bus depot]
    – Tetsujin
    Sep 9 at 12:14


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