Multizone energy model with object by object workflow

Hi all, I am trying to realize an energy model of a small building composed by two thermal zones. I need to define the material of each element (walls, glazing, roof, floor) so I have different HB faces that are merged in a room with the HB room component. If I consider only one thermal zone it works, but if I try to use this workflow including two zones the room component tell me that the room is not closed. I have tried also on super simple geometries (two contiguous cubes) but it doesn’t work.
Any suggestions?

Thank you.

You should share a small sample model to recreate the issue.

If I have to guess, and assuming your model is clean, I would check the tolerance in the Rhino document and make sure it is set to a reasonable number.

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