I have an unconditioned knee wall space. I wish to condition it but am faced with a small dilemma. My concern is: can I install fiberglass against the rafters (assuming I have baffles), if the vaulted ceiling leading up to the ridge vent is obstructed by foam insulation? Picture to illustrate.
Where is says "Install blocking and rafter baffle...", the vaulted ceiling in the conditioned space adjacent to the knee wall, is open-cell foam. Therefore, I'm concerned that not providing a clear air path from eave to ridge vent would cause moisture buildup even if I had baffles along the rafter. Right now supposedly it's not a problem because part of the knee wall attic does have airflow (it's not regularly shaped), but if I restrict the channels to between the rafters only, about half of them are blocked by the vaulted ceiling's foam barrier.