Insulation/cathedral ceilings above skylights

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Old 10-28-00, 10:40 AM
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We had our house re-roofed, and we did the insulation our selves. I purchased what the contractor told me to use. R-30 faced for the cathedral ceiling, and R- 18 for the walls. Also I put those ventalation soffits in before the insulation. My question is---I was told I didn't need to cover the ceiling w/ plastic, since it's faced. (we plan to finish the project next yr.) Should I add some Plastic above the skylights? Since they are the full width of the rafters????

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Old 10-29-00, 07:21 AM
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Betsy, if I'm following you correctly, you are asking about insulating the skylite shafts (walls) and the need for a plastic vapor barrier in the shaft. If you put faced R-30 batts in the shaft walls, that kraft face is all you would need for a vapor barrier. If the R-30 you put up is UNFACED, then yes, you need to install the plastic vapor barrier. Hope that answers your question.
 
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