Experiences Silva Trade - Sipa Floor Landhausdiele

@ Sigi: With all due respect: there is no need for any objection here, as I
- neither mentioned upper limits
- nor claimed that there is no connection between the thermal resistance and the suitability for underfloor heating.

The technical connection is derived – but we both know this as experts – from the calculation formula of the thermal conductivity (or thermal conductivity coefficient). Therefore, the material/thickness of the material is naturally decisive for its thermal resistance.
But let us not confuse the straightforward questioner.
A 13mm thick multilayer parquet, regardless of the installation method, is very likely suitable for warm water underfloor heating (to also include special cases like electric heating at the margins).

You are right, the decisive factor for the questioner is that the floor is suitable for underfloor heating, if it is present at all. We probably agree on the surface.
Looking forward to good cooperation and a warm welcome from me as well.

Best regards, Sigi

First of all, thank you for the answers!

I understand that the wear layer should be at least 4 mm and that the LHD should preferably not be glued (we have underfloor heating).
Should the two lower layers be made of a specific type of wood?
How long does the "white oiled" effect last? Can the appearance possibly be maintained or extended through specific care?
Thank you and best regards.

and the LHD should preferably not be glued (we have underfloor heating).

I personally recommend gluing, especially with underfloor heating

Should the two lower layers be made of a specific wood?

This cannot be answered as each manufacturer prefers a different process. You can find information about the structure from the manufacturer.

How long does the "white oiled" effect last? Can the appearance possibly be maintained or extended through specific care?

I would answer yes to that. There are soaps with white pigmentation that make care easier. But here too, only use care products recommended by the manufacturer.

The wear layer must be 2.5mm according to DIN by the way - otherwise many manufacturers would have a very hard time