<t>Hi Keet,<br/>
I am sorry, but I have to bother you again. I try to be as precise as possible.<br/>
I created a test room to keep it simple. 4 walls, 1 of them 1,5m, another 2,5m, the sides corresponding.<br/>
The plugin was indicated as installed, effective after relaunch, which I did.<br/>
Then ...

Once more another question. I downloaded the plugin and it seemed ok, but nothing indicated in the menu. Does it need the Enbglish version for the plugin? I am working with the German one.

Thank you very much. I will try and do my best.
Best regards from the south of France

How can I install pitched roofs with dormers if the roof is above 2 levels? It doesn't work with walls because you can't specify a pitch. And I would also like to install several Velux windows in the attic.
Thanks for helping me....