If you were going to tile an entire room would you start from the walls or floor? The room is only small 12m walls amp; 4m floor amp; is a basic toilet amp; basin. There are no border tiles amp; no fllor to wall tiles.
I've seen it done both ways. But I prefer to do the walls first. That way what ever mess is on the floor can be cleaned up easily and it is not on the new floor tiles
