If you were faced with the following cantilevered bay, how would you go about insulating it? I can seal most of the wood air dams between joists with Great Stuff, but as you can see, there are two joists with no air dams - the gap continues all the way back between the first and second story.
Given the existing ducting and plumbing in these areas, is there any way to get an effective seal?
Once the joist gaps are sealed as much as possible, anything else? Should I put batting between the joists against the cover? The cover in this case will be caulked plywood.