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TOPIC: I Have An Existing Metal Roof and Have A Question

Leaky ridge vent during high wind/rain events

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Hello,

I have a 5/12 pitch metal roof at my house on Kure Beach in North Carolina that is approximately 2 years old. We love the roof, but have a serious problem with water intrusion at the ridge vent during hurricanes and other high wind/rain events.

I would like to replace the current stock ridge vent and replace it with a better product; one more designed for higher winds.

Can you recommend a vent design or product that can better withstand horizontal driving rain?

Thanks in advance,

John McMains

John McMains

11/10/2019
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Or copy this URL: https://www.metalroofing.com/spirit/comment/24618/find/

Unfortunately, I do not know of any roof vents that may not bring in some water during certain conditions. It sounds like your situation is worse than "some water" though. One key is making sure you have as much or more intake venting as exhaust. If anything, your attic should be just slightly pressurized to keep air flowing the right way, which helps keep water out of your exhaust vents. I would look perhaps at the Cor A Vent assembly or check with your metal roofing manufacturer to see if they have an all metal vent with small pierced holes or stainless steel screening.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

11/10/2019
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Yes. I understand some water will get through, but I had many, many gallons.

Is this the Cor A Vent assembly you speak of:
--3" Purlin vent with metal roof--
https://www.cor-a-vent.com/productguide/48/

John McMains

11/12/2019
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Or copy this URL: https://www.metalroofing.com/spirit/comment/24630/find/

That drawing appears to be based upon the metal roof being installed on purlins. The same detail could be done if the metal panels are on solid decking.

Todd Miller
Todd Miller
Isaiah Industries, Inc.

11/13/2019
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