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Re: Capillary Breaks

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This has more to do with the flooring planned than heaving.
What flooring is planned and how much vapor can it tolerate?  If you have flooring that is relatively insensitive to moisture then you may not need the capillary barrier.  If you have moisture sensitive flooring then you will need all of the above.
I think you missed the point of the question.  If you have moisture-sensitive flooring, you would put a vapor barrier in,  why would you put a capillary break over the vapor barrier?
Gail Kelley