ᐅ Cooling with underfloor heating systems – is special insulation necessary?

Good morning everyone,
We have been living in our newly built house for a few weeks now.
It took about two days for me to experience the uncomfortable effects of a well-insulated house in summer.
On the ground floor, the "cooler" temperature stays for a few days, but it gets really warm upstairs.
I have an LWZ504 system, which can also cool via the underfloor heating.
However, my heating installer said that I should have used insulation that is resistant to condensation. Is that correct?
When I ask the neighbors, who also cool with their heat pumps, none of them seem to know anything about this.
To prevent condensation issues, I do have a control unit with dew point monitoring, right?
I can’t find any insulation or impact sound insulation that mentions condensation resistance anywhere online.

Best regards

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

Dew point monitoring is necessary and sufficient. We do it exactly this way; it is a great solution in summer when you have only a few tiles.

I wanted to cool the bedrooms, as the system does not have unlimited cooling capacity. Vinyl flooring is installed.

Is it possible to cool only individual rooms? I don’t think so...
Which additional module does an air-to-water heat pump need to enable cooling as well?

Above all, it doesn’t make any sense at all. The ongoing costs are virtually zero, and the effect increases the more cooling surface there is. The cooling capacity is acceptable if the entire house is cooled, but if it’s only two rooms... you won’t get much cooler.