We are in southeast Idaho, have a plain simple gable roof on a 1,050 square foot floor house; the roof's pitch is not great, probably 3 or 4/12 but normal for our area.
We have 1 vent at each gable end (so 2 total), rectangular and about 12" by 24" in area. We have five vents spaced evenly along the roof, about a foot down from the actual peak. Inside the attic I see the vent holes are about 12" in diameter.
I keep reading that my square inches are probably good for air flow, but I'm wondering if I still need to put in some soffit vents and baffles for good circulation. The people before me vented the bathroom fan right into the attic so I want to avoid installing a new roof again (it was replaced last year-shingles and all plywood panels).
Given this, yay or nay on needing soffit vents and baffles?