ᐅ Floor construction without a screed layer directly on the basement ceiling

Hello everyone,

I have a question regarding our single-family house and hope there are experts who can offer some advice.

We are planning a ceiling heating system.
Reasons:
- Cooling is possible
- The ceiling will be suspended anyway
- No screed needed (more ecological and no drying time)
- More flexibility in choosing the flooring

Is it possible/useful to attach a crisscross battens frame directly onto the concrete basement ceiling and then screw a plank floor directly onto it?
Could insulation made of wood fiber be placed directly into the battens?
Do the battens need to be fastened to the concrete slab? Or do you only screw the second layer of battens onto the first?

For flooring, this can be done like that. There are several methods for installing the battens.

Hello,

fracoon schrieb:

Is it possible/useful to install a cross battens directly on the basement ceiling (concrete) and then screw a plank floor directly on top?

You do realize that you won’t have any impact sound insulation this way, right? In other words, you will hear every step throughout the entire house as if it were still a shell!

The purpose of a floating screed is to provide acoustic decoupling between rooms; the possibility of installing underfloor heating is just a nice bonus. It’s no coincidence that houses have mostly been built with floating screed for the past 50 years...

And why would skipping the screed be more ecological?! Compared to the amount of concrete used in the foundation slab, basement, and ceilings, the small amount of cement in the screed is negligible. Building a house is always a messy business. In the end, it hardly matters whether you build to “KfW 70” or “KfW 0.1 Evolution” standards or whatever. If you really care about ecology, don’t build a house! Or build a log cabin by hand (but please, without a concrete slab floor).

Best regards,

Andreas

He wants to install a floorboard... in that case, the battens are decoupled. This eliminates any soundproofing issues.

What about thermal insulation? The concrete ceiling of the basement will absorb a lot of heat and draw it down into the basement.
If you have issues with drying time, there is also quick-drying screed. It is installed as panels beneath the floor.

In cases like this, a vapor barrier is usually added because a white tank only protects against water in its liquid state. A floorboard without a raised vapor barrier would probably suffer damage over time.

A Katja foil or similar is also not very expensive and can be easily installed by yourself. However, I can't say how to do that with the cross battens without perforating the foil.