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Old 07-03-2012, 12:30 AM   #1
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I removed my sky light and roofed over the hole.. How do I insulate the hole?


I've removed my sky light and roofed over the hole. Now there is just plywood and shingles. How do I insulate the area?

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Old 07-03-2012, 12:36 AM   #2
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I removed my sky light and roofed over the hole.. How do I insulate the hole?


Provide pics so those on here that are able to help can give relevant feedback ... Depends on a number of factors which hopefully will become evident with photos.

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Old 07-03-2012, 05:31 AM   #3
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I removed my sky light and roofed over the hole.. How do I insulate the hole?


+1

If you took out the skylight and there was previously a shaft, you should just drywall the shaft over and insulated the backside of the new drywall ceiling for ease and proper R-Value.
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Old 07-03-2012, 06:45 AM   #4
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I removed my sky light and roofed over the hole.. How do I insulate the hole?


Quote:
Originally Posted by Windows on Wash View Post
+1

If you took out the skylight and there was previously a shaft, you should just drywall the shaft over and insulated the backside of the new drywall ceiling for ease and proper R-Value.
The sky light was a curb light so there is only 10'' of height on the end near the eave and 21'' on the upper end which doesn't leave much room for insulation. I thought about stacking R7.5 rigid but there's only room for 4 layers of it. Does the rigid insulation go right up against the plywood under the shingles? Will the heat from the shingles on top of the plywood cause condensation as the temperature changes outside? Does there need to be room for venting? Do I need to remove the gyproc from part of the shaft so the shaft can breathe? How do I get to the vapor barrior to seal it off?
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Old 07-03-2012, 07:40 AM   #5
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I removed my sky light and roofed over the hole.. How do I insulate the hole?


If the roof is vented, don't block the venting with the foam.

Foam will be fine and if you got 6-7" of polyiso in there with the radiant (foil) barrier on the uppermost piece facing the roof, you will be fine.
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