Attic/Ceiling Joist Insulation Replacement

double b

Joined: Nov 9, 2001

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12:30p, 5/15/24

AG

So I see conflicting information about faced vs unfaced insulation. Should I use it, and if so, which direction does the vapor barrier face?

FYI, I am located in the Bryan/College Station area.

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JP76

Joined: Feb 11, 2011

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5:11p, 5/15/24

Paper/vapor barrier faces toward the conditioned space. If not conditioned like a garage the paper still faces to the inside of the garage

Unfaced would be used if stacking it on top of existing joist insulation

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agnerd

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10:00a, 5/16/24

AG

I've been told the paper goes toward the interior in cold climates and the exterior in warm climates.

JP76

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In reply to agnerd • 12:20p, 5/16/24

I can only speak for central Texas weather with a range from 3 to 112 in my lifetime. No idea about up north.

I have personally seen in BCS mold/mildew issues on the back of drywall and paneling on demo when the paper was installed away from the conditioned space.

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