Ceiling appears partially

[hobbyrv]

Will you please advise me what to do with this very partial ceiling: only on the right and a small piece in the kitchen. How can it cover the whole room and kitchen?

http://www.mediafire.com/view/ddw2c7o2z ... .31.44.png

And as you're taking the trouble to answer this thread, perhaps you can also tell me how to put 2 roofwindows in the kitchen above the sink, when the ceiling is complete?

[Puybaret]

The ceiling might be too complicate for Sweet Home 3D to compute, and you should add a roof yourself.
See the FAQ How can I create a roof on top of a house?, the tip How to design a sloping ceiling with a window and the Shape Generator plug-in that might help. Don't forget to make the existing ceilings invisible in the modification dialog box of the rooms to avoid conflicts with the roof objects you'll add.