Originally Posted by
Jerry Peck
Michael may be seeing something else too?
Well, as that *is* a common (party) wall, the next question is, what is it made of? From the material visible in the picture, it may not be a two hour wall, which opens up a whole new can of worms. (OTOH, it *could* be a two hour wall, which would explain why were are not seeing fire-protection on the underside of the sheeting).
I'd also like to see a wider angle view of that end of the attic - it's hard to visualize what's going on off to the left from the fragment we can see. Also, a picture of the outside of the roof at that (valley?) would be helpful.
There, there's the discoloration of the insulation at the eaves. It looks as though the insulation is obstructing any soffit ventilation, so I'm not sure it's a result of the insulation "filtering" air entering through the soffits. Was there a power vent installed in this attic?
(Later) Here's an enhanced version of what we can see, looks like the eaves are in fact obstructed, but the discoloration is more general.