RETURN TO I Have An Existing Metal Roof and Have A Question
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Thank you.
As you're aware, this is not a typical residential metal roof installation.
The concern with condensation is when warm moist air typically originating inside the structure reaches a cool surface as it tries to drive out of the structure.
I am not sure what they installed as a "condensation barrier". Was it something basically like a sheet of polyethylene?
Would there be a way to now add a sheet of polyethylene to the bottom of your insulation, preventing moisture from migrating into the insulation? If you could do that, I'd feel good about what you have.
We just enclosed our deck with a 3 season room. The roof is metal but they put a condensation barrier on with the plastic to the metal side and insulation to the room side. We added more insulation under that.
Is this going to cause a trapping of fluid between the plastic and metal? The blanket edges are also not stuck to each other well, I could see the metal roof at the seams in spots. So I'm worried about dripping or leaking from condensation.
Any input would be appreciated.
