Underfloor Heating - Existing Concrete Floor

[lerence]

Before I get shot down this isn't your normal "can I lay ufh on an old uninsulated slab" question.

I own a solid wall 1920s-1930s house. It's built into sloping land and the entire footprint of the downstairs is above an approximately 2m deep cellar/basement. The ground floor is a concrete construction and as such I have access to the entire underside of it. It looks like the shuttering was corrugated steel sheets so as you can probably imagine the underside isn't very flat.

The plan is to make the basement a livable space so the build-up of the ufh isn't a problem, we'll be digging down anyway. External wall insulation will also be installed.

The question I have is, would it be possible to install ufh from below with the above in consideration?

 

[Exedon]

If you intend installing underfloor heating for the ground floor from below the real question is how thick is the existing floor?
The optimum thickness of screed above underfloor pipes is 65mm.

 

[Madrab]

You can always retrofit the current slab. It can be channeled to take the pipework and then capped with 6mm cement board.

I wouldn't think placing UFH under a corrugated suspended slab would work. If it's a load bearing floor slab (sitting on external founds amd internal piers) then it's probably going to be at least a couple of hundred mm thick.