Under-slab vapor barrier under footing?
Greetings. First I would like to say that I am awed by the knowledge and expertise on this forum. I have purchased a steel building and am going through the process of a slab/footing-piers. I believe the foundation design is sound( had to go back to mfg. as local concrete guys were speccing different and woefully inadequate foundations)
My question is about extending the vapor barrier under and around the footing to grade. It would seem to make sense and be correct but many internet pics show it stopping at the slab before the foundation. The contractors I have been querying about the job don’t think a barrier is needed- they don’t normally do them etc. I would like to limit moisture as much as feasible.
Thank you for your time, Ken Cohenour
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