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Interior Wall Offset From Floor?

spam4us

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Oct 12, 2011
Messages
135
I will be using OSB for my interior walls and do not want to set the edge of the panel directly against the floor to prevent any moisture/water from wicking into it. I am wondering what other have done.

One thought is to have a 1"x3" pvc molding on the bottom against the floor and then set the 4x8 ft osb panel on top of the molding creating a 3 inch offset. This would keep the bottom of the OSB off of the floor to prevent any water or moisture from wicking up into the osb.

I have a typical pole building.

Thoughts?
Other ideas?
Has anyone done something similar?

Thanks
 
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MushCreek

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Jan 14, 2015
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Upstate South Carolina
Unless you're building is at risk of flooding, you don't need 3". I just space wall materials at 1/2", and then glue flexible vinyl trim to cover the gap.
 

NUTTSGT

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Northern Central Ohio
Do your walls set directly on the slab or a stem wall/course of block ?

I'd put down a PT 1x4 or 5/4 deck board for the OSB to sit on.


....edit: I missed the pole building.

Is your insulation off the floor also ? How did you frame up the walls inside ? How big are your posts ?

If it were mine and framing the walls between the posts, I would use a wider bottom plate, 1/2" wider to accommodate the OSB you're using on the wall and I would use a PT 2x4-2x6.


I'd also caulk the edge to prevent any welding berries from rolling under it also.
 
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yeldogt

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In my shed I ran a strip of 6" PT decking around ....like a baseboard.
 

DGersic

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DeKalb, IL
I spaced my OSB about 1/4" off the floor. "About", because I used that to get the sheets adjusted to vertical even though the floor isn't perfectly horizontal, so the actual gap varies a bit. Haven't trimmed the bottom yet, going to go with the glue on vinyl stuff.


Sent from my iPad using Tapatalk
 

Toomanytools?

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Nov 4, 2010
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855
Location
Washington
I'm getting ready to go down that road, couple options space OSB off floor 1/4" min 1/2" better then caulk the gap. If you do wash the shop out 1 or 2 times a year painted OSB will withstand some light moisture. This would be cheapest and less labor.
Another option set OSB on a PVC or composite trim like TREX, PVC about $14 for a 1"x4"x8' piece, TREX 1"x6"x16' for $40 but you can rip it and get 32' compared to 4 sticks of PVC you save $16. Still most likely want to caulk the PVC.
Could also do a rubber base but not my first choice.
Another option use a Smart Trim LP cheapest option 1x4x16 about $8.60 so 32 feet $17. The LP trim if set in a bead of caulk on concrete will withstand washing down the floors as well as PVC for a lot less $$
Anyway some ideas.
 
OP
S

spam4us

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Joined
Oct 12, 2011
Messages
135
Do your walls set directly on the slab or a stem wall/course of block ?

I'd put down a PT 1x4 or 5/4 deck board for the OSB to sit on.


....edit: I missed the pole building.

Is your insulation off the floor also ? How did you frame up the walls inside ? How big are your posts ?

.


I am using 4x8 sheets of foam board for insulation. It is setting directly on the floor between the posts. My post are 3 - 2x6 laminated together.

I am going to use interior girts just like the ones used to hang the exterior metal on. The osb will have the 8 ft length parallel to the floor. The girts will be spaced horizontally 2 ft apart OC. Depending on how much of a gap I use between the concrete floor and the osb will determine the spacing of the girts. For example...if the osb will be sitting on top of a 1x3 that is on the cement, then the center of the first 4 ft girt would need to be at 4 ft 3 in. to account for the offset. The center of the 8 ft girt would need to be at 8' 3". etc.

Just asking to see what others have done.

Thanks
 
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