Roxul vapor barrier | DIY Home Improvement Forum

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gt1935

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Joined Sep 12, 2009

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148 Posts

Discussion Starter · #1 · Feb 7, 2016

Does this insulation need a vapor barrier? Exterior wall 2x4 wall. Read conflicting reports. Some say yes others say no. Which is it? Thanks.

Windows on Wash

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Joined Aug 30, 2011

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30,077 Posts

#2 · Feb 7, 2016

Roxul is not a vapor barrier in this case. Depending on applications end where you live, you may need to add one.

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