Roofing Ventilation – The What and The Why Ventilation for your roof is the movement of air through the attic. There are: Intake areas (places where the air enters your attic) Exhaust vents (places where the air exits) The purpose of ventilation is to help regulate the temperature in your home and make it more comfortable and more efficient. Danger of Poor Roof Ventilation Hot air rises and cold air settles; that’s science. The problem occurs when hot air rises or cold air s