Edinburgh I looked at the Devi Mat, looks like a goer
thanks for that, i have not looked at the single wire system
There is just too much conflicting info on the web, especially regarding insulation under the slab!
Everybody seems to agree that insulation around the edges makes a difference but not under the slab
If its a must the slab will come up and be replaced with a suspended although very shallow wooden floor!
So any experiences with no insulation under the slab would be good to hear