Finest Practices for Ensuring Proper Roof Air Flow A well balanced intake and exhaust air vent proportion, generally 1:300, plays a critical role, with intake vents preferably placed at the lower side of the roofing system for awesome air entry and exhaust vents at the top for warm air exit. https://johnathanzseth.newsbloger.com/30713931/local-insights-on-roofing-companies-gainesville-florida-homeowners-prefer