Have just started the building of my house through direct labour. Last minute decided to go for geothermal with UFH. Asked architect to draw up new plans.
On new plans:
Ground floor make-up: 150mm Concrete floor slab on 100mm expanded polystyrene. He has forgotten (I think)to put in the screed for the UFH. BTW is this a normal thickness for the floor 150mm seems a lot.
First floor: 20mm Floor Finish, 70MM screed with floor heating piping on 50mm expanded polystyrene floor insulation (20Kg/M3) on 150mm hardscore precast concrete slab.
Won't get to talk to architect until Mon. But maybe 90mm (20+70) of the 150mm floor will be used for the UFH. Any suggestions?
BTW foundation and footings have been done for concrete floor upstairs so don't worry about that.