Imported solid not casting a final view shadow

[Curtis Johnson]

Your photo's size and clarity doesn't adequately illustrate what you've done or what the problem is IMO. When I post images on Chief Talk, I try to size them around 640 x 480 pixels. If you want better advice, it would be better for you to save your plan and then close it (you can leave Chief open but close your plan), then navigate to your plan file with Explorer > Send > Compressed Folder; then using manage attachments, find your zipped plan file (same location as your plan file) and post it here so we can see exactly what you are talking about. I would always try to create something like this with Chief first, but I know there are some Sketchup experts out there that would possibly do something similar to what you did depending on the complexity of the roof design you are using.