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Shed floor

Posted: Sat Feb 02, 2019 10:33 pm
by gpena73
I built a shed and The floor is made of 2x2 concrete pavers. There is a lot of moisture that seeps and is making the interior moldy. I want to replace the pavers with something less permeable. Can I remove these pavers and fill the floor with concrete? Thanks for your advise and expertise.

Re: Shed floor

Posted: Sat Feb 02, 2019 11:40 pm
by A. Spruce
Concrete wicks moisture as well, so if you've got a high water table or poor drainage around the shed, you won't be curing any mold/mildew/moisture problems by pouring concrete.

Post a picture of what you have and how the shed is built over it, how is the shed attached to the floor, etc.

Re: Shed floor

Posted: Sun Feb 03, 2019 9:43 am
by Shannon
Do you have any ventilation in the shed? Wall or roof vents or both?

Re: Shed floor

Posted: Sun Feb 03, 2019 2:46 pm
by gpena73
I have windows that I crack open during the year.
The shed is on the ground. I had placed several layers of sand/crushed rock/plastic for the foundation.

Attached are some photos.

Thanks!

Re: Shed floor

Posted: Sun Feb 03, 2019 3:15 pm
by A. Spruce
How is the shed supported, is it sitting on the pavers or does it have its own foundation?

Re: Shed floor

Posted: Sun Feb 03, 2019 4:35 pm
by gpena73
It has it’s own foundation. The pavers can be removed.

Re: Shed floor

Posted: Sun Feb 03, 2019 5:50 pm
by A. Spruce
If it has it's own foundation, then you can easily remove the pavers and pour cement, but I still don't think this will cure your moisture issues.

How is the drainage around the shed?

Re: Shed floor

Posted: Sun Feb 03, 2019 6:59 pm
by Shannon
Cracking a window now and again may really not be enough.
Is this shed in a low spot?

Re: Shed floor

Posted: Sun Feb 03, 2019 7:10 pm
by DanM
One possible solution may be to rip up the pavers, dig down the dirt a bit, put down a layer of rigid foam, then put back the pavers (or pour a slab) on top of the foam. It wouldn't stop moisture coming up in the foundation itself though. Also, if the drainage is bad you'd need to do something around the perimeter to keep water from soaking into the foundation.

Re: Shed floor

Posted: Tue Feb 05, 2019 1:15 pm
by gpena73
There are French drains around the shed and they quite well. Thanks for the suggestions! Shannon, I will start by adding some ventilation. Dan and A. Spruce, those are great suggestions. What will the ridid foam do?

Re: Shed floor

Posted: Wed Feb 06, 2019 5:24 pm
by DanM
The rigid foam keeps moisture from the ground from making its way up into the floor slab / pavers.