Condensation UNDER Insulation In Attic Finishing Project - Building & Construction - DIY Chatroom Home Improvement Forum

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Old 01-25-2011, 09:11 AM   #1
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Condensation UNDER insulation in Attic finishing project

We're in the process of finishing our walkup attic. I'm using recycled denim insulation with a plastic vapor barrier in the roof. It's an ongoing project for me so it has been "in-process" for about 8 months now from early summer to now-I'm in the midwest). I got about halfway through with the insulation when I had to pull some of the finished insulation down to do some preliminary framing. To my horror there was a significant amount of condensation frosting under the insulation. Could this be due to the partial finish (humid air leaking behind from adjacent unsealed areas)? or is something else going on?



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