BIM: Easier way to create walls of different thickness?

https://preview.redd.it/3ccrje7voboh1.png?width=723&format=png&auto=webp&s=8395751870209b6cf86ebb4a8777ab116886a810

I recently started to have a look into the BIM workbench, since I want to re-create my house in FreeCAD.

A typical floor plan contains the outer dimensions, individual wall thickness and inner (room) dimensions, and it is quite easy to draw this in Sketcher.

BUT it seems such a sketch cannot be transformed into a set of walls. It can be extruded and then looks like walls, but it isn't, and e.g. doors cannot be placed on it.

Instead, I need a sketch for the outer wall, create the wall, make it 300mm thick and align it correctly on the sketched lines. Then a new sketch for the long inner wall containing just a single line, requiring the external geometry of the outer wall (not sketch) for precise positioning. And don't forget alignment. Then a new sketch for the short internal wall, requiring the external geometry of the outer walls and the long inner walls. And don't forget alignment. Quite complex for a very simple floorplan. A few more rooms, and I loose the overview.

I tried the (yellow) draft tools to create lines and then walls, but it seems this is lacking all the simple constraints from Sketcher.

Am I missing something here?

Posted Sep 8, 2026, 5:05 PM UTC

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