Semi-detached house - Which one is the best? Who has experience with that?

Hello everyone.

ypg:
What information are you missing? I’m happy to provide it.
I don’t understand the thing with the nicknames, as far as I know I only have this one (maybe the technology did something I didn’t want?)

I have a first topic here: How can you create a Futura foundation (or competitors) more sustainably? Polystyrene boards are probably not the best solution, right?

In terms of the topic, this would be, for example, a solution I am looking for (if the stated energy savings really are true), but for example without plastic products as insulation boards.

A floor heating system is no longer necessary in a passive house, but merely a luxury to have, for example, a pleasantly warm floor in the bathroom. How is it with repairs if something is wrong with the heating? Just like floor heating in screed or more complicated?

An alternative would be foam glass gravel. However, it is not exactly cheap and therefore difficult for your budget.

No idea how foam glass gravel and polystyrene behave overall in the ecological balance from production to recycling. Neopor and the like consist mainly of air and the rest is fully recyclable. Foam glass gravel consists of recycled glass that is expanded.

How can a Futura foundation (or competitor) be made more sustainable?

Are you referring to the insulation of the slab from below and from the sides or the integrated underfloor heating? The former is widely used in low-energy houses, with the sides of the slab always insulated. Slightly less plastic would be foam glass as an insulating material. Made from recycled glass, the energy required depends on the accounting boundary, but in any case is 20-40% less than XPS.

I see the integrated underfloor heating in the slab rather negatively in terms of sustainability at first glance, but I have not looked into it in detail.

In terms of the topic, this would be an example of a solution I am looking for (if the stated energy savings are really accurate), but for example without plastic products as insulation boards

What energy savings? Compared to what?

A so-called Sweden slab supposedly has a cost saving in production because you no longer need the screed. However, it also has disadvantages (since ).

Whether the insulation lies under the underfloor heating but on the slab, or under the slab, is more a matter of taste.

If you now replace XPS with foam glass boards, you have 30% higher costs despite the same energy efficiency.

Then would such a slab foundation be feasible in a passive house without underfloor heating? That would be absolutely best! Do you then heat the remaining heat demand via the ventilation system? You do need that, right?

I once heard a U-value (component) of 0.15, is it a true passive house from then on?

Sweden slab is not important, low to no heating consumption is the goal. And according to Google, Foamglas isn’t that much more expensive, if I can omit screed and underfloor heating then in the end it might even be cheaper?!?

Wishing you all a nice evening!

For a passive house, one would need at least 0.10 to my knowledge; with the appropriate thickness, this is also possible with [schwedenplatten].

[Schwedenplatte] without underfloor heating? I've never seen that. But I also don't know many who build new homes without underfloor heating.