I recently purchased a two story home with a pitched slate roof.
There is NO soffit or other ventilation to the attic. How should I ventilate it?
I plan to place a gable vent on one end
with a gable fan in the other end
, but I have no idea how to size them. I've heard 1 cu ft/min per 150 sqft of roof space, which in my case is ~600 sq ft. How do I size the passive gable vent? Given that it is a slate roof, I don't plan to poke holes and add roof vents.
All replies appreciated.