Creating a closed volume with variety of breps and surfaces

I am trying to create a closed volume with a variety of surfaces to create a honeybee room.

Joining all of them does no seem to work as i getthe following error:

  1. Input _geo is not a closed volume.
    Room volume must be closed to access most honeybee features.
    Preview the output Room to see the holes in your model.

is there a fast and easy way to convert these surfaces into a closed volume?

Creating closed (107.2 KB)

if you test your geometry with non-Grasshopper, modelling tools:
and analyse with

in Grasshopper you may want to use “Brep Join” before the input of your script.

to get better answers here, maybe edit your post and assign a grasshopper category.

hope that helps, kind regards,-tom