Matty A

I read that i can tile directly onto waterproof chipboard is this true as i was told that i can only tile onto waterproof ply minimum 6mm.

The question i have is about the new floors that they put in newbuilds which is t&g chipb'd instead of t&g floorboard,now is this chipb'd waterproof and how can i tell? the boards are green.

If i cant tile directly on top is it best to ply line them or use ditra?

I was told 6mm min ply but i said to myself i would use 9mm because the extra 3mm makes a heck of a differance structurally i think or is this just over kill?