Eric,
As you can see I have an area above the roofline of the extending back room. This is a problem that I continue to come across as well connecting the fascia from the high point of the roof back down toward the peak of the extending porch. I would also like to run a 1x4 underneath the soffit. If you can point me in the right direction many thanks would be expressed... therefore, I have two problems I am trying to overcome 1) filling areas with needed siding and 2) extending fascia toward roof lines although the roof plans have been connected and 3) placing a 1x4 or board underneath the soffit area.... thanks... for your help... wayne