pre-existing shed needs a floor

fivefootmenaceJune 2, 2010

I'm new to this house and there was a pre-existing shed in the backyard. For whatever reason there was styrofoam placed on the ground and particle board thrown over top of the styrofoam. Well, long story short the floor is completely rotted and there is gross dirty moldy styrfoam everywhere...What is the best way to get a functional floor in there? I tried to google solutions but everything I find is about creating a floor for a new shed...

I hope someone can help...thanks!

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Concrete. We poured a new floor in the garage and the excess was wheelbarrowed out back into the shed. About two inches or a little more would be good. You can get some bags of concrete (Sakcrete), mix in your wheelbarrow and dump into place. Ours was just dumped and rough leveled, no troweling, and makes a very clean floor.

    Bookmark   June 2, 2010 at 11:03PM
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It sounds like you may have water issue. As a result, I would try to get the shed up off of the ground to prevent future issues.

    Bookmark   November 5, 2010 at 9:58PM
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There is a post for free shed plans. Look how those builders created floors.

Water is the problem. Let water vapor move or completely stop it.

Concrete stops most of it. The gaps in the shed will allow the dampness to evaporate.

Gravel is also a good shed surface - it is not too objectionable to walk on or park a tractor on, and it allows moisture in and out.

Or, you can put skids down which are lengths of 4x4, attach plywood to the skids, then lift the shed onto that. The skids will provide air circulation and slow mold growth.

    Bookmark   November 8, 2010 at 12:34AM
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Concrete is the way to go, I'd try to elevate the shed, keeping it a dry as possible.
The wood should not touch the soil, a foot higher may suffice. And only pressure treated wood contacting the concrete.

A tall shed can look really nice

    Bookmark   November 8, 2010 at 2:57PM
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