Condensation under patio cover

Old 09-18-08, 07:06 AM
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Question Condensation under patio cover

This patio cover has rafters, sheet of plywood, tar paper, tar, and gravel on its roof. After it has rained and it warms up during the day, there is condensation underneath on the plywood. Does anyone have an idea of what is going on?

Thanks in advance.
Old 09-20-08, 05:41 PM
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Condensation occurs when the cold and hot meet. The heat is rising and is trapped under the roof but the cool rain is on top. I wouldn't worry about it unless you start to hear thunder.

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