Ply or chipboard T&G flooring

[vala]

Is there any benefits to having a ply based T&G floor over chipboard?

I've got carpet going over most of it, and in the bathroom 6mm hardie backer will be down on top prior to ditra mat and tiles.

under everywhere is wet UFH.

[Mr Punter]

My favourite is Egger Protect 22mm T & G chipboard.

 

For a forthcoming project the SE has specced 18mm ply to the upper floors as part of the structural strategy.  Who am I to argue?

[nod]

3 hours ago, vala said:

Is there any benefits to having a ply based T&G floor over chipboard?

I've got carpet going over most of it, and in the bathroom 6mm hardie backer will be down on top prior to ditra mat and tiles.

under everywhere is wet UFH.

You don’t need Hardy B board and Ditra 

One or the other 

Ditra Matt is absolutely fine directly onto chipboard or ply 

Pretty much most surfaces 

[vala]

1 minute ago, nod said:

You don’t need Hardy B board and Ditra 

One or the other 

Ditra Matt is absolutely fine directly onto chipboard or ply 

Pretty much most surfaces 

 

The hardie board is being used to build up the height so I have the bathroom finished floor level the same as the rest of the floor. Did consider standard ply instead however thought at least with the Hardie board it would be better with the UFH beneath.