gambrel roof insulation

beaks

I'm in the process of renovating a barn with a gambrel roof. We're far from finished but we moved in anyway. We recently noticed major condensation and moisture dripping inside after a quick thaw after a cold spell, and I wondered if I made a mistake in insulating. The moisture went away quickly on its own once the temp dropped again.
It has metal roofing and I used the pink 2" Raft r mate, on the underside before installing the batt insulation. The Raft r mate is advertised as attic venting and this is not an attic, so is it necessary and could this have contributed to this problem? Any other suggestions?

mark942

Did you run the Rafter mate the entirety of your rafter cavity?

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beaks

Yes, everywhere.

johnnywalleye

issue and have heard a dozen fixes,none of them very appealing.as soon as the heat makes it through the insulation the roof condensates and it rains on the inside.ive been told to put up a barrier,remove insulation,add twirly birds,stop breathin,add moisture barrier to the ground ect..let me know what you find out,

Gary in WA

The baffles allow air from the soffit intake vents to reach the ridge exhaust vent. As per directions, you left 2" between each. http://www.owenscorning.com/around/v...s/VentSure.pdf

1. Then the fiberglass batts, faced- or unfaced?

2. Your location may require a vapor barrier behind the drywall: http://www.buildingscience.com/docum...ecommendations

3. You need an air barrier: http://www.buildingscience.com/docum...wall-approach/

4. or possibly some rigid foam board: http://www.buildingscience.com/docum...on?full_view=1

Be safe, Gary

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johnnywalleye

if you would do me the favor look under roofin of last year in late december.look for metal roof condensation i posted pixs of my cabin and how i installed the egg crate and insulation.thank you in advance and so long 4 now john