27 May '13, 7pm

Moisture barrier versus air barrier underneath slab #green

I plan on building a house on a slab later this summer. I have been planning on installing a 10 mil poly air barrier (with taped seams) underneath my slab (and above my rigid foam) which would extend upwards out of the edges of the slab and seal to my air barrier located in my outer walls. Would my air barrier block the moisture or am I better off installing a vapor/moisture barrier to avoid moisture into the slab? Thanks.

Full article: http://www.greenbuildingadvisor.com/community/forum/gba-p...

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