shed base vapor barrier
The shed foundation will need a vapor barrier to protect the shed structure from moisture. the shed foundation vapor barrier should be a perm rating of 0.3 or less. 10-20 mil polyethylene should be fine.. It’s also an amazing vapor barrier. without a barrier, water vapor can enter the shed through the floor, which can rust the tools you store there. many people don’t realize you can buy treated. To prevent rust on equipment stored in the storage shed, you need to block water vapor that tries to migrate from the soil through the floor of the shed. just before you install the treated plywood subfloor on the joists, place two layers of vapor barrier on top of the joists, and let it overlap the edges around the entire subfloor perimeter.. 
shed base vapor barrier A gravel shed foundation may be an easy foundation to build, but it’s a lot of grunt work too. whether a free form or timber-framed pad, it must be compacted and as close to level as possible. if it’s not level, it will fail and damage your shed. hopefully, you now know how to build a gravel shed foundation using crushed stone and not gravel.. Showing you how to make a foundation base for an outdoor shed. we made it for a rubbermaid roughneck 7x7 storage shed. item # 551125 model # 1887153 at lowes. can buy storage shed at lowes here.
