tiling raised floor

[bananaspark]

a , small wetroom, door opens into raised floor (5 inches high), floor cut away (25mm ply, loads of noggins, no deflection when stepping around it) to match the sweep of the door, laying large format porcelain tiles.

bit concerned about the eventual wear&tear on the edge where it meets the vertical, feet scuffing along, people tripping up on it etc
any tiling tips of how to make this edge bulletproof (as well as keep it waterproof)

b/

 

[gcol]

Not sure if I follow your question properly, but if you are asking how to protect a porcelain tile if used as a step, forget it. The tile will be fine as is.