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TOPIC: Ventilation

Metal Roof Condensation

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I have an old home (late 1800's). The home is completely remodeled except for the attic. It has a metal roof that works fine, but in the cold winter months here in PA the condensation that accumulates on the metal roof is unbelievable. We are trying to 'finish' the attic for a play-space for our children which means we will need to insulate this roof. What is our best option? Will soffits and ridge vent provide enough ventilation to keep condensation from forming once we put up insulation etc to 'finish' the room? any venting ideas to get rid of this condensation would be appreciate thanks DAN
Guest User

2/20/2006
I would install a complete vapor barrier behind the drywall in the finished room. You can insulate behind that but it is critical that you have at least a 2" gap behind the metal roofing which is ventilated with soffit vents as intake and a ridge vent. I hope this helps. Todd Miller
Todd Miller
Isaiah Industries, Inc.

2/20/2006
That does help, thank you. Any suggestions for a vapor barrier? anything you have found to work well. thanks a lot for your input.
Guest User

2/20/2006
Heavy polyethylene with the seams all taped or sealed otherwise. Todd Miller
Todd Miller
Isaiah Industries, Inc.

2/21/2006