Vapor Barrier - huh?

Old 02-26-02, 12:36 AM
Dr. G
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Angry Vapor Barrier - huh?

OK - I decided to NOT drylock and go with a vapor barrier. But I have no read from different sources that there is some debate as to where the 6mm poly should go.

If I am going to build my walls with insulation a few inches out from the poured concrete - should the vapor barrier go:

a- against the concrete
b- against the back of the wall - facing the concrete
c- on the inside of the wall facing the room (and just behind the drywall)

Also- can I just use a staple gun to attach it with some tape in the right places?

Thank you again!

(PS - If I use faced insulation - is it faced on both sides? If not - which face should face the concrete - the covered, or uncovered?)
Old 02-26-02, 04:15 AM
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IMO the plastic vapor barrier should go against the back of the studded wall facing the concrete and the paper side of your insulation should be on the inside of your wall next to the drywall. Stapling the plastic is fine.
Old 03-02-02, 03:22 PM
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Vapor barriers

Go to for helpful information.
Old 03-02-02, 05:16 PM
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Recently Building Codes in many states have made a change, and now require 6ml on both sides of the wall. In other words after insulating, you then cover the inside of the wall again before the sheetrock or paneling. I have done this practice for years.

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