Underfloor heating pipes in sparse + 22mm chipboard. something in between?

[nova383]

Hello.
I'm starting with the floorboards today but have a question.
I've placed 22x120 boards crosswise over the joists 45x220, with underfloor heating plates and pipes in between.
The question:
The plates are so large that the spacing is barely visible, and it's said that the boards should be glued to the joists or the spacing now, but it will only be possible to fully glue wood to board against the walls.

Should I put something on the spacing and plates before the board? Some paper or thin cloth of some sort? To prevent creaking?
Of course, I will glue the seams and can screw practically everywhere on the board, not just over the beams, as I don’t want to reduce the effect of the underfloor heating either...

 

[para]

What kind of flooring are you going to have on top later?
Why didn't you do it the other way around? The floor chipboard first, that is?

 

[nova383]

What kind of flooring will you have on top afterwards? Why didn't you do it the other way around? Floorboard first, that is?

In the bathroom, it'll probably be self-leveling compound and tiles, in the rest, some form of click flooring, laminate. The other way around? Why? My underfloor heating plates were actually supposed to be placed between 45x220, just attached to these with insulation or noggings as support underneath. THEN the floorboard on top, but it's much easier this way (working alone), costs a bit more but also raises the floor height to a better level. The floorboard will lie in the same direction as it should, it's just that there will be gaps between them as well.

 

[para]

It will result in a stiffer floor with less creaking if you glue the chipboard to the joists as you should. Now you won't get any interaction at all.
In the bathroom, no plates are needed. Attach the hose to the reinforcement and just use self-leveling compound.