Steps

1. Turn off your fans or AC unit. Make sure to power off everything so that you can make sure you’re properly assessing your ventilation system. 
2. Close all your windows. You’re testing how the ventilation in your attic works on its own, so leaving any windows open will negate the test!
3. Bring your flashlight and incense to your attic and light it. Be sure to stand near the ventilation in your attic for the most accurate results possible. 
4. Observe the movement of the smoke. If your ventilation is working properly, the smoke from your incense will drift inward. 

Still wondering? Call a professional. No one knows the health of your roof like the experts who have made roofing their profession. We at Haynes Construction are always here for a quick consultation if you still have questions after performing this test. Contact us to schedule a free inspection today!