I'm close to pouring a new floor in our stand up crawl space. Would it hurt to have *two* layers of vapor barrier below the concrete -- one on the dirt, then the gravel, and then another layer between the gravel and poured slab?
Is this are going to be finished out when your done?
We use foam around here under the floors to insulate them before the pore.
I hope your not planning on poring this floor yourself unless you experianced at do this type work.
It's a one shot deal and no going back without tearing it out if it's done wrong.