ᐅ Underfloor heating with prefabricated screed panels

Hello,

we are planning to build a prefabricated single-family house and have a question about the floor structure with underfloor heating. One supplier uses prefabricated concrete screed panels with the heating pipes already integrated.

We are not entirely sure how the individual panels are connected. Unfortunately, the sales representative was unable to provide details on this.

Does this mean the water circuit is essentially segmented at points that then become inaccessible? How reliable is this system over time? We are concerned about the possibility of a leak developing after 10 years.

Does anyone here use a similar system and could share their experience?

I believe these are panels with cutouts for the underfloor heating pipes. After laying the panels, the pipes are continuously placed into the cutouts.

The major disadvantage I see with such systems is that you are restricted to a fixed installation grid. Usually, a room-by-room heat load calculation is carried out, and it often turns out that in the bathroom, for example, the pipe spacing needs to be very tight, and sometimes additional wall heating is required to achieve a low supply temperature for the heat pump.

I suspect, as "hanse987" already pointed out, that you may have misheard.
There has never been, and for safety reasons will likely never be, a "modular system of heating elements."
Most likely, a type of KNAUFF system is meant, where (as "hanse987" mentioned) there are recesses into which the continuous heating pipe (heating element) is clicked and then covered with a resin-reinforced leveling compound.
Such a heating system has been on the market for years and has proven its reliability.
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Greetings to the "community of questioners": KlaRa

Thank you all for your responses.