I have a small section of roof over the front of my garage, which I would like to insulate and drywall (making my garage fully insulated).
It is 39" high, and 54" by 17', framed with 2x4 trusses, and facing almost directly north (I don't think it ever gets direct sun). I'm located in south eastern Ontario (near Toronto), and the temperature typically ranges from about -30 to +30C. The garage is not directly heated, though is attached to the house by two walls and so some heat loss from the house is going to heat it (even without being 100% insulated, today when it's 13C outside, it's noticeably warmer in the garage).
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There are soffit vents in this section, and since it is open to the garage below it currently gets some amount of air circulation. I was planning on insulating with R14 fiberglass batts.
Can I close it up without issue, or do I need to add vents of some sort? Presumably I need to make sure there is airflow from the soffit vents at least. Since this is the front of the house, if I do need vents, are there any options for discrete vents?