So, how do you eliminate thermal bridging in the ceilings of a passive house? Hang 2x2s.
[A view of our master bedroom.]
In order to maintain the envelope of our passive house and minimize thermal bridging, OSB was nailed to the rafters on the second floor. The seams were sealed and 2x2s were screwed into the OSB. From here, drywall will be fastened to the 2x2s creating a small pocket for wiring to be run across the ceiling.
[A closer look.]