Ask Todd Miller *Metal Roofing Expert

Garage Ventilation

Written by Todd Miller on August 29, 2009 | Filed under: Misc,Roofing Answers

Kelly wrote and asked:
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 extremly 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.

My answer:
First of all, if your new 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.

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About Todd

Todd's expertise comes from his years of experience in metal roofing manufacturing. As president of Isaiah Industries, based in Piqua Ohio, Todd runs a several of the world’s leading manufacturers of residential metal roofing; Classic Metal Roofing Systems, Kassel & Irons, and Green American Home. His personal goal is to educate homeowners of the long-life benefits of metal roofing.

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