Masonry / Exterior walls Construction variants to choose from, which wall system is the most sensible?

Hello everyone,

We are currently building a single-family house. The house will be 6.7x12 meters. Since the house will only be 6.6 meters wide, my wish was to make the exterior walls as thin as possible. Now I have received several options from the structural engineer to choose from. I would simply like to hear your opinion and recommendation on these options.
Options:
1. 24 cm hollow brick + 10 cm VWS 035 -> Uw=0.27
2. 20 cm sand-lime brick-q + 14 cm VWS 035 -> Uw=0.22
3. 15 cm sand-lime brick-q + 10 cm VWS 035 -> Uw=0.30
4. 30 cm PPW 2/0.4 (??r=0.09) plastered -> Uw=0.28

I must also say that I need windows with a Uw of 0.85, i.e. triple glazing, RG1, warm edge.
Which wall do you think makes the most sense?
Tomorrow I also have an appointment with an architect regarding this, but I just wanted to hear several opinions.
Thanks in advance.

Best regards

Hello märander,

In terms of building materials, you cannot distribute "better" or "worse". But what is important: the better the thermal insulation, the lighter the wall, the worse the sound insulation. The best would be to find a healthy balance; the load-bearing wall not too thin but as heavy as possible, the VWS as thick as possible. Version 2 would be suitable. The installation of heavy (triple-glazed) windows requires sufficient edge distance for the dowels, so do not plan the load-bearing wall too thin (and too light) for this reason. Discuss the aspect of "thermal insulation-sound insulation" especially with your architect.