Underfloor heating and design flooring

Hi, How noticeable is the difference in thickness of the design floor between 6.5mm and 9.3mm in relation to underfloor heating? If I take floors from Haro here, for example, one compares a thermal resistance between 0.046 and 0.063 m2 K/W. These are all theoretical values, but would one notice the difference?

More important is to have no air between the floor and the covering, therefore glue it. The other thing then doesn't matter.

More important is to have no air between the subfloor and the covering, therefore glue it. The other thing doesn’t matter then.

We actually plan to lay it floating because we want impact sound insulation and don’t want to feel like walking on the screed ;)

We actually plan to install it as a floating floor because we want the impact sound insulation and don't want to feel like we're walking on the screed

You won't notice any difference between the two flooring options. Apart from that, you will hardly notice any difference between glued down and floating installation - except that floating floors always have a somewhat hollow sound and the walking noise is louder. In my opinion, floating installation is only a last resort.

I don't know these thin design floors, but we have parquet of about 14mm and it wears very well, even when installed as a floating floor. At least with parquet, I would do it that way again because what I have experienced with glued floors also seemed too "hard" to me.

With underfloor heating, the air between the heating elements should act like an insulator. Impact sound insulation is important. Therefore, the best option is to glue down the [Designboden].