tile board over wet ufh

[Rugrat]

Is there a board that can be used to screw to the joists in wooden floor (with a wet ufh system)? - im hoping theres a 6mm product out there to bring a small area up to the adjacent screed height. Can anyone suggest anything. Thanks

 

[Tile seller]

Good morning,
If your putting boards straight onto the joist then it'll need to be 'structual'.
I don't know of any thinner than 18mm

 

[Rugrat]

Hi, thanks for the reply. The ufh pipes are in a biscuit screed so I was planning to use some flexible tile ad to 'glue' and screw the thinner board in place, so hopefully getting a better heat transfer and rigidity to tile on.

 

[Tile seller]

No more ply do a 6mm

 

[Rugrat]

No more ply do a 6mm

Thanks, that looks like its insulating tho?? Only thing ive come up with is hardie backer. Would this be ok? I think its heat conductive too.