Mike_Ef
2025-10-09 19:29:44
- #1
Good evening house building community.
I have already read numerous videos and posts, but still haven't found any suitable advice for me. Therefore, I would like to get some advice from you.
I wanted to attach the foil to the concrete knee wall. The problem is the propped-up rafter on the right. This makes it extremely complicated. I had planned to cut the foil completely at that spot and then lay it against the wood and secure it there with adhesive and tape. That will probably be difficult because I also have little space. The strips on the wall and wood have been primed; I sanded the rough sawn wood a bit at the connection point.
I wonder if there is a better solution.
The plan is also to install a stud wall on the screed. This should be clad with drywall boards. Would it be permissible to first install this and then attach the foil there?
Are there any suggestions on what to put behind the stud wall (there is a cavity then)? > Insulation wool? Or rather a material not susceptible to moisture? XPS boards?
Thank you very much in advance!

I have already read numerous videos and posts, but still haven't found any suitable advice for me. Therefore, I would like to get some advice from you.
I wanted to attach the foil to the concrete knee wall. The problem is the propped-up rafter on the right. This makes it extremely complicated. I had planned to cut the foil completely at that spot and then lay it against the wood and secure it there with adhesive and tape. That will probably be difficult because I also have little space. The strips on the wall and wood have been primed; I sanded the rough sawn wood a bit at the connection point.
I wonder if there is a better solution.
The plan is also to install a stud wall on the screed. This should be clad with drywall boards. Would it be permissible to first install this and then attach the foil there?
Are there any suggestions on what to put behind the stud wall (there is a cavity then)? > Insulation wool? Or rather a material not susceptible to moisture? XPS boards?
Thank you very much in advance!