Backerboards on wet ufh

[Time's Ran Out]

We can do that as well - just bend over!

 

[widler]

hardie would be fine, and hardie will tell you so, it will heat up like a screed as it’s directly on top of your pipes.
So it’s just acting like a pumped or s/c screed

 

[Waluigi]

Orbry Pro Ply to go onto wet UFH.

It’s listed in its technical literature.

HB and Aquapanel are also both suitable but can’t find any info on that.

 

[Ajax123]

They have already laid a timber floor in the bulk of the area... timber a great insulator.... something like hardibacker board would be ideal. I agree annjnsulated backer board would present an minor issue but really at 4mm depth it is a technical and not a practical issue. The effect on the heating woild be very very small. It would also act as a very good uncoupling system. Trouble is customers always know better cosntheybhave read a brochure and listened to largely uninformed opinion from non tilers, and non experts in heating systems and screeds.