This article supports Air Vent's longstanding recommendations to roofing professionals when considering residential attic ventilation:
1) Keep the airflow balanced with INTAKE and EXHAUST regardless if you use the 1/300 or 1/150 ratio.
2) Increase the amount of overall ventilation for roofs 8/12 pitch and steeper (all of Air Vent's calculation tools have this built into their logic)
3) Having more EXHAUST than INTAKE is problematic.
|Read the full article - "Clearing the Air"|