how to use foil-faced insulation in VA

homeboundFebruary 24, 2011

I am in Arlington, VA and need to repair the joist insulation (i.e fill bare spots, add hangers to keep it up) in a walk-in crawlspace used for storage. It's not vented, except that the barn doors don't seal well at all.

The old insulation is foil-faced on one side, with the foil facing down into the space and unfaced against the conditioned space. Is that the right way to go for the Washington, DC area? Total area is 150 s.f.

Thanks much.

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That is not correct for Washington, DC.

The vapor barrier should face the warm side.

In actuality since we have both heating and cooling seasons in the area no vapor barrier is also an option.

    Bookmark   February 24, 2011 at 11:05AM
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