Vapor barrier over slab material and details
ive been looking through the archives of the Q A here trying to find some answers to a remodel/conversion im doing. I havnt been able to find an answer yet so figured id reach out to the community. Its a slab on grade carport im converting into shop space.
ive cut the perimeter out and placed a continuous stem wall and bituminous water proofing. in doing so i saw there isnt a vapor barrier below the slab.
the floor assembly i want to do is floating, comprised of continuous rigid insulation with 2x sleepers over that layer, subfloor, then a finish t and g floor.
I get lost trying to determine: what vapor barrier i should use, be it fluid applied, taped poly, or if the rigid insulation is enough? And then whats the detailing to make it continuous, do i tape the seams? How is it terminated at/or above the stem wall? Does the rigid insulation need to be sealed with foam?
any information would be greatly appreciated. And thanks for yalls time.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part