Under floor heating.between concrete.and wood floor

[Cej238]

We are having a rear extension done on our Victorian semi, and also having the wall between kitchen and dining room removed To create a large open plan room.

Outside..In the new part will.be a concrete poured floor. Inside we have wood boards over joists.

We are having water underfloor heating fitted. Part of this job includes the fitting of cellotex between existing joists.

What is the proper way of doing this sort of job?

Does a concrete screed .get poured over the whole floor when all the pipes.cellotex etc are fitted?

Or is some other material put over the floor supported by wood joists?

I'd quite like the floor to feel solid, eventually with glued down with glued down wood floor. Will different floor types prevent this?

Also, how, if at all does one heat over the demolished loving room dining room wall? (The base of which will remain as it supports the joists) Is it standard for that not to be heated? Or is it expected to carve out grooves for the pipes to run?

Grateful for advice and for any approaches to avoid.

Thanks