Affordable engineered parquet, is a 2.5mm wear layer sufficient?

Ok, that sounds good. But I am always surprised by the prices of the different manufacturers. The [Bauwerk] has a thinner wear layer but is significantly more expensive. But also better? If the sublayer really doesn't matter, then you basically only have to look at where I can get the thickest wear layer for the least money?

If the lower class really doesn't matter, then you actually only have to look at where I get the thickest wear layer for the least money?

In the last 30 years, in my self-occupied houses/apartments (Click)parquet ranged from an MSRP of €35 to €180 per square meter. After installation, I never noticed a difference again (90% fully glued down and only 10% floating). During installation, good click-parquet was easier to lay because the click joints were more precise. But that was it. Currently, in the house I live in now, I installed a leftover stock of Haro. It cost €30 with a 3.5mm wear layer and an MSRP of +/- €100/sqm.

I would have said at least 3mm before, but @nordanney is right, sanding is actually never done.

And what if you have to or want to?
probably would have liked to do it after 3? years, but is saving the procedure
Those who use the search are clearly at an advantage
https://www.hausbau-forum.de/threads/geoeltes-parkett-hat-flecken-erfahrungen.47439/

Anyone who has parquet installed in the kitchen is really beyond help. You can only do that if you consider the kitchen exclusively as a showroom or are extremely meticulous about wiping away every stain immediately.

We didn't put a plastic mat under the little one's high chair without reason, otherwise the parquet there would probably already be black.

Anyone who finds themselves needing to sand their parquet after just 3 years should rather have click vinyl or tiles installed. Because after 3 years it will look like that again. How thick is the wear layer supposed to be? 10mm?

Moreover, sanding is an enormous effort. All furniture out, baseboards off, sanding, sealing, everything back in. I would just lay new flooring...

PS: The thicker the parquet, the worse the heat conduction of the underfloor heating, by the way. Anything over 12mm is basically just energy nonsense.

Ok, you have helped me a lot. The note about the 12mm is also a good tip. And with a 2.5mm wear layer, you could sand it at least once, you probably don’t do it more often anyway. Regarding parquet in the kitchen: I have 2 acquaintances who have been living in their house for over 5 years and keep laying it in the kitchen. But maybe you have to accept the odd stain then. That’s just how it is. I prefer to lay parquet and live with a bit of "patina" than vinyl. But that is certainly a matter of taste. Thank you again for all the opinions.

Anyone who has parquet laid in the kitchen really can't be helped anymore.
You can only do that if you see the kitchen exclusively as a showroom or are extremely meticulous about immediately wiping off every stain.

That's nonsense. I would do it again and again – had it in the last apartment and now in the house. Of course, plastic or tiles are easier to maintain, but parquet is not a problem.

The thicker the parquet, by the way, the worse the heat conduction of the underfloor heating. Everything over 12mm is basically just energetically rubbish.

Everything under 12mm is qualitatively rubbish. No, seriously. Whether it’s 11.5 or 13.5mm doesn’t really matter in principle. That’s not a noticeably real difference. At 20mm or more, I would also say "no" and recommend a different floor.

Anyone who finds themselves in the position of having to sand their parquet after just 3 years should rather have click vinyl or tiles laid.

That’s true.