Cooling via underfloor heating - is special insulation necessary?

Good morning everyone,
We have been living in our new building for a few weeks.
It took about 2 days until I experienced the unpleasant advantages of a well-insulated house + summer.
On the ground floor, the "colder" temperature remains for a few days, but upstairs it really gets warm.
I operate an LWZ504, which could also cool via the underfloor heating.
However, my heating installer said that I should have used condensation-resistant insulation. Is that correct?
When I ask the neighbors who also cool with their heat pump, none of them know anything about that either.
In order to prevent condensation issues, I do have the control unit with dew point monitoring, right?
I can't find any insulation / impact sound insulation online that indicates condensation resistance or something similar.

Regards

You don't need to worry. The cooling effect of underfloor heating is so minimal that condensation failure cannot occur.

Dew point monitoring is necessary and sufficient. We do it exactly like that; if you have only a few tiles, it is a top solution in summer.

Wanted to cool the bedrooms, since the system does not have unlimited cooling capacity. There is vinyl flooring.

Is it possible to cool only individual rooms? I don't think so.... What additional module does an air-to-water heat pump need in order to be able to cool as well?

Above all, it doesn’t make any sense at all. The running costs are virtually zero, the effect is greater the more cooling surface there is. The cooling capacity is OK if the whole house is cooled, but only two rooms… you won’t get much cooler.