re: Attic ventilation

Do you have ridge vents? There are attic ventilation calculators on line, based on 1 sq ft of ventilation area per either 150 square feet of attic area (preferred) to 300 square feet of attic area (minimum I think).

Your soffit vent area (intake) should ideally equal ridge vent area (exhaust). I’ve calculated it on own my own house which is easy to do, but I have ridge vents, and I met the 1:150 ventilation area criteria. If you have whirlybird vents (wind driven exhaust vents) or power vents to exhaust the air then you’ll need different calculations at least on the exhaust side.