Attic venting question – No ridge vent
Hello, I’m working on improving my attic space as I have condensation issues going on. I am working on air sealing my ceiling. I know thats the main win. In parallel I was going to work on improving venting of my roof seathing. My roof actually does NOT have a ridge vent, but rather soffit vents and then 1 motor attic vent fan.
Could it make sense to do site built baffles (rigid foam) all the way up my rafter bay from the soffit to the roof line so the rafter cavity is enclosed (with 2 in gap for air flow of course) and then run duct from each rafter bay to the attic vent fan to keep air flowing, could that work ?
Again my tricky situation is I don’t have a ridge vent to get the continuous air flow, but rather 1 attic fan near the middle of my attic space. So I’m thinking I can enclose each rafter bay fully, then duct each encapsulated bay to the vent attic fan. The fan would “pull the air” from soffit up through rafter bay and then out via the attic fan. This ensures the air flow / movement from soffit up against the sheathing and then out the attic.
I’ve attached a crude drawing. Hope it makes sense. (Again, this is in parallel to air sealing the ceiling).
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