So I have installed solar attic exhaiust fans, but they don't quirte do the job in my garage. I plan to install an l150 in
the garage and the solar fans will simply bear the additional airflow. Is this reasonable? I alo have birdholes vents at the botton of my rafters so i don't think static pressure would be a problem.
Thank you for your question on attic ventilation. Just remember that you need enough open venting area to get makeup air back into the attic. Take the total CFM of the attic fans and multiply by 0.48. This will give you the minimum open venting area (in square inches) required to properly vent the attic.
Date published: 2015-07-08