Floating solid wood parquet flooring installation, any experiences?

Someone really loves their floor! That's what real enthusiasm sounds like

And then it is also worth installing it exactly that way. Great.

That's also how I walk on my glued and totally beautiful parquet. There's no difference to floating installation. It's similar to the "sound" of speaker cables...

A typical "if-I-don't-understand-it-it-doesn't-exist attitude". Besides what can be experienced, there are also measurable parameters that show differences in floor construction. For example, thermal conductivity – as correctly points out:

I lack the physics! If underfloor heating is in the screed...

very true – a floor like Scout's cannot be efficiently combined with underfloor heating. There are alternatives to underfloor heating. Grundofen, wall heating, direct heat pump, radiators (which also come in aesthetically pleasing designs, for example from Tubes Radiatori or similar)... have that. If you love the floor that much – look at how to adapt the system. Off topic comments:

Otherwise one can measure differences

That referred to speaker cables. The comment is wrong. The moment you measure cables frequency-dependent, you also find very amusing differences in the audible low-frequency range. Changes in frequency behavior are acoustically relevant in the audible range – what else? That most high-end cable manufacturers set the price of their products exclusively commercially and not according to manufacturing effort, and that cable development is mostly empirical or often nonexistent, is of course another matter. Exceptions are rare. I know the industry very well.

Attached are some construction pictures: Screwed solid wood planks (oak) with underfloor heating without screed

Off-topic comments: That referred to the speaker cables. The comment is wrong. The moment you measure cables frequency-dependently, you will also find very funny differences in the audible low-frequency range. Changes in frequency response are acoustically relevant in the audible range – what else? That most high-end cable manufacturers set the price of their products solely commercially and not according to manufacturing effort, and that cable development is rather empirical or often does not happen at all, is of course another topic. Exceptions are rare. I know the industry very well.

Yes, sorry for going off-topic. Just one more thing: I am from the audio industry. It may be that measurable differences exist in the audible frequency range as well. But when various double-blind tests show that recognizing an alleged difference is no better than random choice, then that remains pure theory. I recommend everyone who believes in such things to participate in such a test. Unfortunately, it is relatively elaborate if you really want to eliminate all other reasons for differences. And it depends, as said, also on what you compare. We did not test doorbell wire; I also believe that there are actually audible differences compared to a cable with a normal-sized cross-section.

For good heat transfer you basically need a frictional fit. Al

I recommend anyone who believes in something like that to participate in such a test. Unfortunately, it is relatively elaborate if you really want to eliminate all other reasons for differences. And it also depends, as mentioned, on what you are comparing. We had not tested bell wire, I also believe that there are actually audible differences compared to a cable with a normal cross-section.

I did my diploma thesis 20 years ago at the Fraunhofer Society – one door away was the psychoacoustics group (the ones who set the mp3 standard. K.H. Brandenburg and Dieter Seitzer used to come and go). When I seriously asked what they would recommend as speaker cable for home use – laughter, pat on the shoulder, "voodoo," "we can only measure differences here but not significant ones in subjects," "no more than 30 marks, connectors should be good, cross-section not too small, rest doesn’t matter."

Attached are some construction images: screwed solid wood floorboards (oak) with underfloor heating without screed

Many thanks for your pictures.
As I can see, you also have a new building.
I would be interested in details why you decided on this solution and would appreciate some information also about the floor structure, among other things. Very gladly also via PM.

PN is unfortunately not possible.

This is not a new build, but a complete renovation of a Swedish wooden house from 1967.
Therefore, the main reasons for the system:
- No moisture ingress into the structure
- Low build-up height (5-6 cm including floorboards and leveling)

We definitely wanted to install solid wooden floorboards. Gluing these onto a thin-layer underfloor heating system (with screed) does not work. Hence the solution with sleeper beams. Positive effect: the floor has a slight springiness (really minimal) and therefore a very pleasant walking feel for us. Negative effect: the floor is not silent; you can hear the wood “working” when walking over it (no squeaking or similar, but different from glued floors), but I don’t find it bad.

The construction time reduction when the screed is omitted is of course enormous. However, the system costs more to purchase.

Questions always welcome