grasmücke
2020-09-25 20:30:29
- #1
Hello,
I have a question for the community that won't let me rest. We are planning a house with dowel wood construction and cellulose insulation. Since the plot has a slight slope, we have planned a basement apartment. To achieve a better indoor climate, the construction company offered us the mostly open south-facing basement exterior wall made of dowel wood (just like the house). The other 3 exterior walls will be made of 20 cm thick reinforced concrete and insulated from the outside with 14 cm of Styrofoam and 6 cm inside.
Since I am not a fan of Styrofoam etc. (especially indoors), I proposed calcium silicate boards as internal insulation for the basement apartment as an alternative. According to the construction company, that would be possible, but only if we make the 11 m long south basement exterior wall as a dowel wood construction. Because the calcium silicate boards have a poor U-value.
At first, I was excited about the idea of having less concrete + Styrofoam in the house. However, later some acquaintances expressed their thoughts that such a construction is not stable and that wood and concrete walls should rather not be combined. Also, there is a particular risk in very heavy rain that water might get into the wall after all. An employee of a competing company also commented on this and said something about the statics.
Has anyone already implemented such a concept? Or does anyone know someone who has something like this? Or is there an architect/expert here who can say whether it is all okay or if it is better to leave it alone.
Thanks in advance
Regards
Sergey

I have a question for the community that won't let me rest. We are planning a house with dowel wood construction and cellulose insulation. Since the plot has a slight slope, we have planned a basement apartment. To achieve a better indoor climate, the construction company offered us the mostly open south-facing basement exterior wall made of dowel wood (just like the house). The other 3 exterior walls will be made of 20 cm thick reinforced concrete and insulated from the outside with 14 cm of Styrofoam and 6 cm inside.
Since I am not a fan of Styrofoam etc. (especially indoors), I proposed calcium silicate boards as internal insulation for the basement apartment as an alternative. According to the construction company, that would be possible, but only if we make the 11 m long south basement exterior wall as a dowel wood construction. Because the calcium silicate boards have a poor U-value.
At first, I was excited about the idea of having less concrete + Styrofoam in the house. However, later some acquaintances expressed their thoughts that such a construction is not stable and that wood and concrete walls should rather not be combined. Also, there is a particular risk in very heavy rain that water might get into the wall after all. An employee of a competing company also commented on this and said something about the statics.
Has anyone already implemented such a concept? Or does anyone know someone who has something like this? Or is there an architect/expert here who can say whether it is all okay or if it is better to leave it alone.
Thanks in advance
Regards
Sergey