I hate humidity... Sweating floor

[Jeepermat]

My 1500sq ft pole barn is currently a swamp, this happens every spring as the pad warms up. Every time we get a hint of humidity my floor turns to water.
I fully understand why this is happening, I am kicking myself for not putting in in floor heat so that I could help reduce this effect.

The shop is sealed fairly well, however every time I am out there I have all the doors opened up, as I am moving things in and out, and this time of year it tends to be colder inside than out. Even with the doors closed it starts to sweat near all the doors.

Is there anything I can do? It sucks to work out there this time of year because the moisture, anything on the ground instantly rusts, my Mill and Lathe get destroyed this time of year.

I am thinking of putting a dehumidifier out there to keep the moisture down when its closed up, is there anything else I can do?

I cant wait to move back to Colorado, I had no idea what humidity was until I came out here, and I liked it that way.

[PAToyota]

Slab is cool - air is moist and warm - moisture will condense on cool surfaces.

As you say, being able to warm the slab is about the only solution. Dehumidifier isn't going to do much because you'll be getting warm moist air in. Overhead radiant heaters that warm up the slab are a possible solution.

[grnd93]

I get the same problem in my garage...no clue how to fix it

[jeep937]

Mine does it too.. Everything metal in my shop gets rusty..

[Ol'Customcj7]

Air movement helps. My floor does the same, and my shop is sealed up like a ticks ass. It still does it. Really bad under vehicles. So I put some small fans in the shop pointing under the vehicles, and it stops.

This year, I'll be getting two of those big 4' diameter shop fans to help move my A/C air around and to keep the floors dry.

[krugford]

A dehumidifier will definitely help.

I have the same problem with my shop (1800 sq ft). I keep a 50pt dehumidifier running over my floor drain and it "fixes" the problem. It doesn't really shut off during the spring. By early summer, it's running on and off. I try to keep the humidity around 45-50%. My bare steel doesn't rust, freshly blasted parts don't rust, my shop manuals don't get wrinkly, no floor sweating, etc. I'll get minor floor sweating if I open one of the garage doors localized to that area, but I try to minimize being in/out.

Your best solution is to minimize the amount of time you have doors open (keep it sealed), and to remove the moisture from the air as quickly as possible (keep it dehumidified). Moving the air around to keep humidity levels equalized throughout the shop is a good idea too, but I generally don't find the need in my shop.

I know you said you have the doors open often while you're working out there, so I really can't think of a good solution for that problem, other than to stop doing that.

[foley]

I have been known to turn on my ac when it's 60 degrees out due to this problem. All I can suggest is dehumidifiers and ac. Running the ac 1-2 degree below ambient drops humidity considerably, increases productivity, and does not cost too much.

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