I've been renovating a 1940s detached garage.
The walls were reframed & insulated, and new electrical run. The last step before drywall / ply is insulating the ceiling.
My problems here are:
* the ceiling is composed of 2x4 rafters
* no soffits, so soffit vents are not possible
* the structure is non-conforming and hence can't be raised in height
* replacing roof to add external insulation is cost-prohibitive for a variety of reasons
I'm curious how you'd go about insulating such a space. Is closed-cell foam my only option? Do I need to sister all of my rafters with 2x6s to hang bats?
P.S. I know the framing is pretty ugly. It passed inspection mainly because it is significantly safer than the previous state of this building, so please hold your judgement
Thanks!
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