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Raised shed floor

Posted on 9/26/24 at 2:50 pm
Posted by tigerrage08
Houma,LA
Member since Feb 2008
525 posts
Posted on 9/26/24 at 2:50 pm
I am going to be building a raised shed and wanted to get some input on doing the floor the right way with a vapor barrier. I will install some type of split unit A/C. Should I also insulate the floor or will a subfloor along with a vapor barrier then the permanent floor be fine?
Posted by TeddyPadillac
Member since Dec 2010
29841 posts
Posted on 9/26/24 at 3:03 pm to
I don't know about the vapor barrier, but be sure to put something around the bottom of it or you're goign to be housing some Coons or Armadillos under there.
Posted by GeauxldMember
Member since Nov 2003
5502 posts
Posted on 9/26/24 at 3:42 pm to
The simplest way would be to turtle back the ground a little under the build site so it doesn’t hold water. Then put down some 12 or 15 mil PE sheeting over it. You can lay down some gravel over it, but make sure you don’t puncture the sheeting.
Posted by oldskule
Down South
Member since Mar 2016
23380 posts
Posted on 9/26/24 at 8:07 pm to
THIS.....critter haven, rats, snakes, etc.....keep a few cats around.
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
71157 posts
Posted on 9/26/24 at 8:27 pm to
Just go old school. Leave it open and don't bother insulating the floor.
Posted by Drop4Loss
Birds Eye Of Deaf Valley
Member since Oct 2007
3967 posts
Posted on 9/26/24 at 9:27 pm to
Use treated plywood for the floor
Posted by T-Jon
Member since Jan 2012
106 posts
Posted on 9/27/24 at 2:41 am to
Keep in mind that when you run the ac, water vapor can/will condense on the hot, humid side of your vapor barrier. If you install vinyl flooring and keep it cold all the time, your subfloor will rot.

I would build it on a concrete slab if possible.

If not, use PT joists and advantech or PT subfloor. If you’re running the ac infrequently and don’t install flooring that acts like a vapor barrier, you’ll probably be fine leaving it open (with vapor barrier under the subfloor)
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