I think you can make it a bit easier by drawing ordinary box slabs for the roof sections then adjusting them to match the angle of the roof using the Rotate tool.
Once you've drawn the first roof section, you may be able to quickly create the second section using the mirror tool. Then the translate tool to adjust the section up or down as needed.
Once you've got the first and second roof sections drawn, I suggest using the Replicate tool to create the remaining sections.