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Author Topic:   shop floor sweats
unregistered Total posts: 107
posted January 29, 2005 06:25 PM           send a private message to wermm   Edit/Delete Message   Reply w/QuoteBBBBBB
My shop floor sweats when it gets humid...

Its well insulated and pretty much all sealed up.

It does it whenever it gets a little humid, if I open the doors it will actually get worse and puddles will appear.

What should I do?? Leaving fans on in there helps but doesnt eliminate it, will sealing the floor help at all?

Dirt Administrator

Total posts: 6243
posted January 30, 2005 08:10 AM  
plastic should help keep soil moisture from coming up, but what in the world can you do after its allready done..

are you sealing your floor jammin, I think that will help also and I know it will make it way better to sweep and clean up spills.

I think the real cause is the moisture in the air hitting the colder cement??

racer s
Dirt Forum Racer

Total posts: 83
posted January 30, 2005 01:20 PM  
what about a dehumidafier just a thought I know they do pull a lot of moister out of the air

Dirt Administrator

Total posts: 6243
posted January 30, 2005 05:44 PM  
As I was typeing that last response I was wondering what a dehumidifier would cost, that should do it. Ill call a supply house tommorrow and see if theres a automatic on off sensor maybe for a dehumidifier that would be the hot ticket.

I work in hvac mostly the large commercial jobs but still the same field so I should be able to find a solution.

Dirt Full Roller

Total posts: 54
posted January 31, 2005 05:19 AM  
The cause of the moisture is the drastic temp change in a short period of time. The only way to get rid of that moisture is to keep the floor at a consistant temp.

Dirt Freak

Total posts: 269
posted February 01, 2005 08:59 AM  
You could epoxy paint the floor and use a really good water resistant (pressure) primer first. I'd recommend calling some of the manufacturers and discussing this with them. I have painted floors in the past, and I'm process of painting a new shop floor and during my due diligence trying to make the outcome better then the last (floor bubbled in places) I was told to use a primer as I described above. The primer should be able to resist a certain level of pressure up through the slab (not sure the specifics). This may help your problem and give you an awesome floor to work on.

Dirt Forum Champ
Total posts: 640
posted February 01, 2005 04:53 PM  
an easy fix would beto paint the floor with cament..
mix regular cement (nogravel)lol with water so it is about as thick as rustoleum then paint the floor with it. It reallys helps

if every thing is under control your not fast enough

Dirt Maniac

Total posts: 114
posted February 02, 2005 08:05 PM  
Speedy2 is right. It is caused by the quick change in temp, and air pressure. Like a glass of tea sweatting. BIGG C

unregistered Total posts: 114
posted February 03, 2005 05:28 PM           send a private message to BIGG C   Edit/Delete Message   Reply w/QuoteBBBBBB
the only solutions after all my research are.

a dehumidifier

condition the air space, by air conditioning it in the summer but the system will need a electric heat source also in order to put a load on the a\c unit or you have to pull outside air into the shop to cool it

I talked to a commercial heating ac supply house, since I work in that field.

they sell dehumidifiers at sears and hardware stores he said try it it could work as it at least has a sensor etc so you wouldnt have it on all the time like a air conditioner etc.

Dirt Maniac

Total posts: 105
posted February 16, 2005 04:21 PM  
The moisture comes from 1 of 2 things. Either the moisture is coming up from below due to a fairly high water table or poor drainage, or the moisture is just condensating from the floor being cool (cold) and the air being warm and humid which is what seems to be your trouble.

Years ago we'd put plastic down before pouring to act as a barrier from moisture coming up from below. That method is hit and miss at best though as any tear or seam can let it through. These days we use burlex. It may actually be spelled berlex, dunno cause I never spell it, just say it. It's an additive that the concrete company mixes in that forms the vapor barrier. Works great. Use it on any shop, garage or house floors that you may pour in the future.

As for the condensation problem, that's harder to get around. Keeping the facility climate controlled helps as does keeping the air moving. A ceiling fan or other fan just moving the air a little can really help, especially when fronts are moving through or you otherwise are having significant outside temperature changes. Your best bet though is the one that your on the path of right now, a dehumidifier. They're cheap, small, quiet, adjustable and all you ever have to do is dump the water out of a canister every once in awhile (mine starts beeping when it needs emptied).

Hope you find something that helps you out.

[This message has been edited by blanep (edited February 16, 2005).]

unregistered Total posts: 105
posted February 16, 2005 05:28 PM           send a private message to blanep   Edit/Delete Message   Reply w/QuoteBBBBBB
thanks, I think Ill buy a dehumidifier or two or three if needed eventually, my shop is 30 by 50 with 12 foot ceilings and all sealed tight.

I keep a fan going in there now to help cut it down.

Ill go look at dehumidifiers this weekend at the hardware stores.

thanks again.

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