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Old 07-24-2010, 11:14 AM   #1
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barrier insulation

can i put barrier insulation on inside exterior walls before sheetrock
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Old 07-24-2010, 01:03 PM   #2
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Poorly worded question.

Yes, insulation can go on the inside of exterior walls before the drywall. You need a vapour barrier, unless it's sprayed/kraft, which already has vb (some).

The vapour barrier goes on the warm side.

Insulation can be outside/inside. In most applications, it's inside.

Rewording your question/providing more specifics gets you a better answer. Hope that helps
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Old 07-24-2010, 01:28 PM   #3
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If you mean a vapor barrier, perhaps. Only if you live in a location that requires one:
Most of the U.S. does not require a vapor barrier when a vapor retarder will work:

Difference between a vapor barrier and a retarder:

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