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Raleford t1_j90r6um wrote

Reply to comment by f_crick in Do i need vapor barrier or can i leave it and drywall over it? by slickwrick21

I don't know your build or what happened, but generally speaking, the vapor barrier is intended to keep moisture out of the wall, not out of the room. In fact it should keep it in the room.

That being said, concrete does sweat, so foam board instead of fiberglass directly on the wall is still likely better and potentially where your moisture came from.

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9oh210 t1_j91fa42 wrote

If op wants to use a vapor barrier in the basement they should be using a smart barrier.

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woodprefect t1_j91p691 wrote

or shellac based primer on the drywall - in general.... it acts as a vapour barrier.

but I wouldn't use it in a basement without a LOT of ventilation.

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