Garage Ventilation

August 29, 2009 | Filed under: Misc, Roofing Answers

Q: I had my garage roof replaced (attached to the house). They removed my 2 wind turbines and installed 1 ridge roof vent, I have 6 soffit vents on the eaves, But my garage is now extremely hot. They said I no longer needed the turbines with the ridge roof vent. How can I cool the garage back down? We live in Texas. My eave vents are not blocked by debri or any other objects. Thanks for any advise you can offer.

A: First of all, if your new garage roof is darker in color than the old one, that will increase heat gain into the attic.

Proper ventilation requires intake and exhaust vents. In your case, soffit vents are being used for intake and ridge vent for exhaust.

Ideally, you will want to maximize your amount of venting and you will want to have the same or perhaps slightly greater airflow at the ridge as what you have at the soffits (total both sides). That will allow for the convective airflow that you need.

todd Miller

has spent his entire career in the metal building products manufacturing industry. He is president of Isaiah Industries, an organization recognized as one of the world’s leading metal roofing manufacturers. Todd is currently Vice President of the MRA (Metal Roofing Association) and a Past Chair of MCA (Metal Construction Association). Through his website, he strives to raise the bar on standards and practices to provide property owners with the best possible products for successful roofing projects.

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