Originally Posted by FRG
It's block-cavity-brick and the floor will be timber joists, insulated inbetween with an 18mm chipboard deck sat on the top, UFH to be installed on top of the deck and a lam. floor on top of that. I have taken down an old conservatory which had a tiled floor on a concrete slab, this is 8" lower than my existing floor in the house and I'm bringing it up to level so using joists is easiest plus I still need to vent under the floor of the existing house which I can easily do using this route.
Sounds good,although my system is under a screed with ceramic tiles sitting on top.
I used Hepworth, who when I installed the system provided a kit comprising the required (based on floor area) single length pipework,the fittings + the stat.
Worth a look, if only for ideas,calcs,quotes etc