By the way, this is really useful. We've already made a couple of changes to the plans for our barn conversion based on the 3D views I've been able to create with Sweet Home 3D.

I'll do that, thanks. In the end I used the Furniture Library Editor, which I assume is by the same person. It has the same functionality in it that's mentioned in the user guide to roofs and can be used in the same way.

I've been reading about creating a sloping glass roof and I think I need the CopyAsNewFurniture plugin, but that isn't on the sourceforge download page. Is it still available?

Thanks