Underfloor heating beneath floorboards

Hello!

I would like to hear your opinion on the topic of underfloor heating and plank flooring:

I want to have the warmest possible, natural, because breathable wooden floor.
Therefore, parquet and laminate are out. I find wooden planks ideal. Perhaps even spruce/fir.
Planks are mounted on a special substructure, as far as I have seen... So I could save on screed in those areas.

But how do you construct something like that in connection with underfloor heating? Support elements to the concrete slab can only be built between the pipes/tubes, right?

That’s not possible. Period. Insulate floorboards, FHZ requires a heat conductor connected seamlessly to the screed: tile, vinyl, glued engineered parquet, short carpet. Floorboard, then radiator. That’s how it is.

So I wouldn’t use spruce/fir, because in my opinion the wood is not hard enough for that. You have to at least expect corresponding disadvantages, meaning quick dents/grooves etc. in the floorboards. I myself laid 20mm thick oak boards, since it’s an old building these are laid on OSB boards on wooden beam ceilings.

But according to the manufacturer, installation with underfloor heating would also be possible, however I wonder what kind of special substructure you are talking about? As far as I know, the boards are installed just like laminate or parquet, possibly glued. But this is the first time I’ve read about an extra substructure, what do you mean by that?

: I haven’t seen it live myself yet, but according to our flooring installer it’s not a problem at all. How do you come to the statement that boards and underfloor heating don’t go together?

If he wants it "as natural as possible" (however that is interpreted), then everything that requires glue is probably out of the question. I've never seen glue-less installations with a special subfloor... I also find it hard to imagine a floor heating system without a really good connection to the floor... Gluing floorboards definitely works, but if parquet is excluded because it's not natural... then glued floorboards wouldn't be any different.

I partly agree with Nordlys, maybe not quite as strict. If you have such special requirements (without screed...), then you probably need wall or ceiling heating (or the ugly alternative with radiators).

How do you come to the statement that floorboards and underfloor heating do not go together?

Wood is not a good conductor of heat.

according to our flooring installer, that is not a problem at all

I think you meant something different, thin boards glued onto the screed, so a floorboard look is possible. But the OP wants real floorboards, that does not work with underfloor heating. In that case, you can use wall and ceiling heating.