I have an existing narrow solid floor hallway, about 3.6 x 0.8 m. The concrete floor has about 4-5 mm screed (concrete base is very rocky so depth is variable), the house is old and sothere is no sub-floor insulation.
Do I have any realistic options for getting in underfloor heating - without raising the floor level or digging up concrete (I might just be able to bear digging up the screed - again)?. Would prefer wet UFL but would think about electric - but not on uninsulated floor (to be tiled).
As far as I can see I'm snookered unless I can cram adequate insulation plus a screed plus UFL plus ceramic tiles into about 40 mm.
The alternative would be very thin wall radiators - if such things exist!.
Paul