JimRB
Veteran Member
I am not an engineer or a true carpenter. I have built a few things but that is a long way from being a proper carpenter. When the neighbor built his addition he screwed up and framed around the perimeter. What I mean is instead of starting both outside wall layouts from a common wall he built the north wall starting from the west wall. Then he built the east wall starting layout from the north wall. Then the south wall starting from the east. So that means on the north wall the rafters stacked on top of studs. On the south wall they were smack dab in the middle of the top plate not directly stacked on top of studs. That seems recipe for sagging. What I saw in your pictures was double 2x10 or 12's joists stacked over the window headers in air. I would probably stick cripples under the double joists. But again I am not a framer so it may not be an issue with singles but with doubles they were made doubles for a reason. Again I may just be overly conservative but the weight starts adding up with shingles, plywood, drywall and maybe HVAC equipment.