Underfloor heating - How to insulate the supply lines to the rooms?

There are hot wire devices specifically designed to create channels/grooves in the impact sound insulation to embed the connection pipes into the insulation – this allows you to freely decide exactly where they go in (preferably right after the manifold, or there are usually suitable system boards with corresponding pre-made channels & branching for this) and where they then reappear. Depending on the build-up height, you then lay 15 / 20 mm impact sound insulation boards on top, and the pipes are then optimally insulated without affecting the overall screed structure.

If you have impact sound insulation and the pipes are stapled, it should theoretically be possible to retrofit such a solution with you as well. However, if the pipes are already connected to the heating circuit manifold, the length will probably not be sufficient.

Otherwise, you can use corrugated pipe – it’s not optimal, but it is a noticeable & well-measurable improvement. This is due to the fact that an air layer is created between the underfloor heating pipe and the screed.

Now I am curious.

Can you describe in which aspects the house differs from the standard cube house with heat pump?

Thank you very much. In the attic, the impact sound insulation with 5cm is not particularly high. Since there is electrical wiring running underneath, that option is excluded there. The system from Rehau is being used. The standard procedure is a tack board and then laying the heating circuits… doing it under the tack board is apparently unusual here.

In the ground floor, we have 14cm impact sound insulation, so that would be feasible. I shared my concerns yesterday. I hope that a better solution will be implemented on the ground floor. Ideally, 3 circuits through the wall and the rest through the hallway…

Oh, DG is already connected and pressure tested. EG will be done today

the shape of the house with the many projections or the flat roof “extension” with a room height of 3.21m. The appearance, see another thread. Energy efficiency is just enough to meet the law. With this construction method, KfW40 would already be an effort. The heating system is not standard. The planned tiled stove... etc.

The most efficient are the standard cube houses after all...

Thank you very much. In the attic floor, the impact sound insulation is not particularly thick at 5 cm. Since there are electrical cables running underneath, that option is not feasible there. The system from Rehau is being used. The standard procedure is to use a tack board and then lay the heating circuits... doing this under the tack board is apparently unusual here.

Basically, it is also possible with 5 cm if less than 2 cm is cut out so that the pipes are fully recessed - e.g., the Roth Floorfix system, you can look online to see how it works. Alternatively, you can replace the existing boards with preformed boards (e.g., Uponor Vario Heat Protect), which are prefabricated including pipe guides and are also relatively easy to install.