So, with Spray Foam Insulation, you can still have soffit vents and ridge vent. The main element is to make sure that spray foam insulation (or some other insulation for instance) doesn’t block the soffit vents. This can be the rolled product that is installed horizontally starting at the eaves. https://mylespyisa.loginblogin.com/35335832/the-fact-about-metal-roofing-contractors-that-no-one-is-suggesting