Karndean and ufh

Flooring specialist installing karndean onto concrete subfloor for me.
I would like to install electric underfloor heating, and have the following planned, please correct me if I'm wrong, thanks.
Currently concrete subfloor has 10mm carpet underlay and 10mm carpet.
1.Concrete sub floor built 2004 pretty flat from wherever I can see.
2. No glue, XPS boards 6mm stuck together with tape. Skirting to skirting as the skirting extends below
3. Foil heating rolled out and connected by electrician, kitchen and hallway as one, WC and lounge as another.
4. Dual Pak overlay, MDF boards 3mm and 4mm, skirting to skirting as I'm not planning to lift them..
5. Installer visits to gluedown karndean.

Will this work, am I missing anything or any advice or thoughts please?
Thank you!

 

Why not just screed a cable system in.... you do know it won’t heat your room as it’s just secondary heating..... designed to take the chill off the floor....... if you want a system to heat the room like a radiator does better with pipes in my opinion

 

Also will need to allow expansion on your mdf boards round the edges if you go down that route

 

6mm cement boards fixed with flexible adhesive

Heating mats

8mm min screed with mapei renovation

LVT on top using Uzin Ke66

 

Thanks I do understand, it's planned as secondary heating rather than primary, just to take the chill off winter mornings when we wander down for the early morning cuppa!
Not keen on water for now as that will be too disruptive, with a young family and costs too..

 

Would that not have the XPS below to prevent heat loss?

 

The 6mm cement boards are for that.

 

Make sure your prep is spot on you will see every slight imperfection when the ufh is on,

 

I'd roll out the matt and screed over only wouldn't use any mdf boards, asking for trouble

 

Check out the omni ufh system, should be fairly straight forward