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Concrete Gurus: best Vapor Retarder
I am wondering whether any of you fellas with experience with concrete can point me to the best vapor retarder. Small slab, about 500 square feet, Northeast USA, soil conditions are about average and the site is not particularly wet. However, I want to have a very good vapor retarder under the slab to prevent moisture from percolating up through it and rusting things.
Any advice would be greatly appreciated.
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