Floating solid wood parquet flooring installation, any experiences?

So to speak, just the wood and you. Invisible corrugated cardboard, very little wood glue and the stainless steel staples as aids on the screed. Done. cool!

Someone really loves their floor! That sounds like true enthusiasm

And why solid planks? Because it is the simplest and most honest thing in the world, just a single board. For us, Tyrolean oak. Nothing else, no particleboard and no cheap wood as the core, no glue of questionable origin that has to hold the individual layers and the entire particleboard together.

Then you are talking about solid wood. Engineered wood certainly consists of different layers of glued wood veneers. So, already a bit more glue.

But not in the upstairs where I am almost always barefoot or wearing socks.

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

Sorry for going off-topic, but the sound difference between each speaker cable does exist.

So also the difference in running feel depending on the floor?

I am missing the physics!
If an underfloor heating is embedded in the screed, to my knowledge one needs a top layer that has a thermal conductivity value, a thermal resistance to heat flow, as similar as possible to the screed. This is only possible with hardwood, not with softwood. Oak values are the most similar.
For good heat transfer, you basically need a form fit. Anything that lies between the two layers severely impedes the heat transfer. The cardboard layer, the air layer, etc. If you lay it in a reasonably elastic adhesive, it absorbs the seasonal stresses well. With adhesives, it can be said with restrictions that low emission at application means long emission release, toxic at application reacts out and then there is peace.
At our place, except for tiled areas, there are oak boards that only have slots milled at the back, simply planks, so to speak. I treated them with linseed oil, they are maintained slightly damp with rich neutral soap.
Bare planks are extremely forgiving with damage, either a few drops of water if only fibers are crushed or even sanding out.

Best regards
Gabriele

Sorry for going off-topic, but there is indeed a sound difference with each speaker cable.