Exterior condensation on metal roof

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Old 10-19-19, 08:23 AM
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Exterior condensation on metal roof

Is EXTERIOR condensation/dew/dripping normal in the fall during cool mornings (when the sun comes out) on an unheated structure?
 
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Old 10-19-19, 08:53 AM
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Well, its normal for a car windshield, so yeah I think it's normal for anything that's below the dew point in the morning.
 
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Old 10-19-19, 08:59 AM
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I'm sure you've noticed that everything is wet with dew in the morning. The lawn, cars, trees and your roof.
 
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Old 10-19-19, 02:44 PM
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Yes... I know this was kind of a stupid question - I just don't recall this much dripping in the fall, but it kind of shocked me. I had some cardboard next to the outbuilding's foundation, and it got soaked, was somewhat unexpected.
 
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Old 10-19-19, 03:24 PM
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it's fall, that is sort of what happens as the temps change!
 
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Old 10-20-19, 03:42 AM
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Both my house and barn have metal roofs. Both collect a lot of dew. A shingle roof will hold dew somewhat but a steel roof can only collect so much before it has to run off. It's not uncommon for the underside of the barn roof to have condensation this time of year.
 
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