Ceiling troubles (sorry if duplicate)

[Base12]

Sorry if this is a duplicate - I don't think my last post actually stuck...

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Hi, hopefully this won't be too tough, but I've been working on this for too long and going in circles.

Part-1:

This master bathroom needs a barrel vaulted ceiling, and it has a perpendicular one to the right as well, which needs to intersect cleanly.  I've used the "Ceiling by extrusion" to create the shapes, but when I join them together, the ceiling on the right mates to the main ceiling, but leaves the .. what? Tail? extending past the intersection arc.  How do I get rid of that?

Part-2:  I seemingly cannot assign a material, or apply "paint" to a ceiling-by-extrusion.  This model needs to be rendered and the default material/color for the ceiling is black, which won't do in a rendered view.

Any help on this would be greatly appreciated!

Part-3:

I can do this with roofs (by face, after making masses), but I can't get lights to host in the roof... if doing that is easier, then that can be my fast-work around.  Non-hosted lights would be very difficult here as they need to follow the curve of the ceiling.

Thanks!

[barthbradley]

RE: Part  1 of 3:

Do you have in-place modeling capabilities?  If so, go to Arch Tab=> Component=>Model In-Place and create a Void that extrudes through that "attic" space. Then use Cut Geometry to cut away the "tail" with the Void.  Finish and close out of Model In-Place Session.  

RE: Part 2 of 3: You should be able to apply Materials to Roof by Extrusion (there is no Ceiling by Extrusion BTW).  Either by Painting the Surfaces with Materials or by assigning Materials to the Layer through Type Properties/Edit Assembly of the Roof.