The roof framing was comprised of 2x4 rafters and a 2x6 continuous ridge board. My plans from Tiny Home Builders called out for the 2x6 beams and a couple contractors that I've asked also said this would be acceptable. I've seen many tiny houses with 4x6 ridge beams that I always thought were overkill. You can do your own research and decided for yourself. I also didn't use a birds-mouth where the rafter connected with the walls at the eve. My plans cut the rafters straight off and I agree with their reasoning since you loose valuable interior space with a roof overhang when you're trying to stay with in the 8'6" wide DMV requirement. I have seen someone build to 9' wide with the intention to have a moving company transport the tiny house since a different class driver licences is needed to transport a larger tiny house. I was in the house and was quite envious with the size so I would suggest it's a worthwhile consideration. 1/2" plywood was used for sheathing, attached with liquid nails and 2" screws at every 6". A 2x6 was used for a fasia to give a small overhang for water to run off the roof and not down the wall. An inch piece of cedar trim was installed over the 2x6 to give a little more overhang.
Every rafter was connected to the wall using Simpson hurricane straps. A 12" metal strap was nailed over the roof sheathing into the rafters at every rafter location. It was suggested by a contractor to install the strap over the sheathing instead of under the sheathing directly on the rafters. I've primarily seen that strap installed under the sheathing on other tiny house websites. The 12" straps were also used around the the corners to connect the roof to the walls.
Gratitude to Thanasi and Steve for hanging off the roof. Thank God OSHA didn't show up.