We have one of those so-called climate floor slabs. And it’s great!!!
At first, we planned a conventional floor slab, then the house builder said he had already worked a few times with the company Futura using the climate floor slab. I then dealt with it for a long time and gathered a lot of information. But we ended up doing it with another provider who was 4000 euros cheaper, who in turn works a lot for Futura since he comes from the industrial floor sector.
It is important that the excavation contractor does a clean job during the earthworks, meaning the fine grading must be perfect; just being able to operate an excavator is not enough. The insulation boards were prefabricated in the hall for the perimeter formwork, resulting in fewer joints than most others who order the finished edge boards. My heating installer then laid the underfloor heating, installed the distribution cabinet, built in the shower channel for the level-access shower, and set the drainage points. It is important to already know where which interior wall will go because there is no turning back, and you don’t want to drill into the heating pipes later if you want to anchor something in the floor, and a wall on top of the heating makes no sense either. We painted the interior walls on the insulation boards with spray paint for good planning.
After that came the reinforcement and the concrete, which was then smoothed, done in no time...
What was important to us was that we didn’t need screed anymore, to bring as little water as possible into the house.
You could lay tiles/laminate directly on the floor inside.
We need less heating temperature than at our neighbor’s house with the conventional floor slab because ours stores the heat more and releases it more specifically. There is no noticeable difference in inertia compared to the normal floor slab or our old apartment from the 80s. On the contrary, the floor simply doesn’t cool down as quickly as usual, and no heat is lost unnecessarily downward anymore.
So we are very satisfied and the costs were the same when considering the subsequent screed with the conventional slab.
But pay attention to the provider; there are many "wannabes" who think anyone can do a few insulation boards and smooth over some concrete… What’s important is a proper execution, for example, for the installation of exterior doors and floor-to-ceiling windows and as few joints as possible in the fiber cement edges. (With the conventional one, you usually have one every 50 cm).
Another advantage is the load distribution, which is no longer punctual but nicely spread out…
For the next house, it will definitely go in again =)