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Sweaty Floor

sharpshooter

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Joined
Oct 24, 2006
Messages
480
Location
West TN
Not in my garage but... I have a patio that I was thinking about converting into a sunroom.. the conrete is already there and the roof is there, all it needs is walls. My problem is, when the humidity is up the concrete sweats. What could I do to fix this problem. I was planning on tiling it.
 
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Vicegrip

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Mar 9, 2007
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1,187
Location
NoVA.
Anything colder than dew point will make water, if present, condense out of the air. The floor is colder than the air as it is covered from sun exposure. Inclosing the space and air-conditioning will prevent this.
 

lh4x4

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Joined
Nov 6, 2008
Messages
123
Location
Illinois
Home building stores have just what you need. They are tongue and groove two foot square osb boards with a plastic vapor barrier on the bottom with feet to hold it off the floor. It is great for basement, garages and you application.

I did my basement family room in case water even came in.
 
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sharpshooter

Well-known member
Joined
Oct 24, 2006
Messages
480
Location
West TN
Home building stores have just what you need. They are tongue and groove two foot square osb boards with a plastic vapor barrier on the bottom with feet to hold it off the floor. It is great for basement, garages and you application.

I did my basement family room in case water even came in.

Huumm, Havent seen anything like that before.
 

lh4x4

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Nov 6, 2008
Messages
123
Location
Illinois
Here's a pic of the bottom side. You can see the floor just to the bottom right. I'm just finishing the last pieces then clear the room out and put down the laminate.

Manards and Lowes has this product. The literature says that it will with stand a vehicle parked on it. The bottom plastic layer with the feet act as the vapor barrier. It is great for basement and garage floors. About $5/pc.
BILD0323.jpg
 
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Joined
Sep 22, 2008
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10
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tulsa,ok
well, i guess im not the only guy w/ this prob. So with this moisture being present on humid,(out of season) days when the garage floor gets a thin layer of moisture all over it (redundant)does this pretty much cancel out using an epoxy coating like(wolverine)? If so is there any way around it? I guess maybe using swiss tiles or race deck? But....would the moisture then settle and stay underneath these tiles and create a mold situation? Or would mold even be able to grow at all on concrete and the plastic? Any advice would be great. Ive got the garage done except for the floor and as of now its ugly concrete gray and stained. Am I doomed as far as flooring?
 
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'the epoxy floor guy'

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Joined
Aug 30, 2008
Messages
162
Location
Iowa
well, i guess im not the only guy w/ this prob. So with this moisture being present on humid,(out of season) days when the garage floor gets a thin layer of moisture all over it (redundant)does this pretty much cancel out using an epoxy coating like(wolverine)? If so is there any way around it? I guess maybe using swiss tiles or race deck? But....would the moisture then settle and stay underneath these tiles and create a mold situation? Or would mold even be able to grow at all on concrete and the plastic? Any advice would be great. Ive got the garage done except for the floor and as of now its ugly concrete gray and stained. Am I doomed as far as flooring?

Just because the "Traditional" epoxy will not work is NO NEED TO DISPAIR. Working with damp and "sweaty" surfaces is not IMPOSSIBLE, Although you do need to make a couple modifications.

In Iowa, in the spring when the frost comes out EVERYBODY's garage floor sweats. This is the frost coming out. This may be your problem, Maybe a HIGH Water Table or ??

As someone else posted If your hunch is correct that it is condensation, it will NOT be a problem once you install your enclosure for the sunroom.

In order for condensation to appear you need TWO things:
Warm Moist Air AND a COLD (Temp BELOW Dew point) surface.

Once you complete the enclosure you will NOT have the ability for the surface to cool that quickly OR for the air to gain that much moisture that fast. Most homes have a humidity level of 20-60%. Generally in winter (unless you add) will be in the 20% range Summer it can rise to higher humidity. Remember, if you are using central AC your coil unit is lowering the temp of your air to as low as 30 degrees. That's why the add the Drip pan and condensation line. SO it is VERY rare that the Air in your home will reach the DEW POINT in the 3 season room space.

If there are moisture problems present when you apply your coating we have TWO options that will be the "barrier" to the moisture.

A better solution would be to apply our super single floor coating when NO moisture is present. Once the coating is cured the moisture will NOT be a problem. IF for any reason you would recreate the conditions for the condensation the water will appear on the SURFACE of the COATING not the surface of the concrete. The air will ONLY contact the coating.

IF your moisture problem is GROUND WATER OR VAPOR, The application will be the same. Unless you have an underground RIVER Gushing up water like ole' faithfull, our coating will hold back up to 15 psi of Hydrostatic pressure which is more than ample to solve that problem.

Now I know Someone is going to post "but then you trap the water under the slab isn't that bad"

Uh, NO. If you have a BASEMENT in your home and your floor is constantly wet WHAT is the difference between that and your coated slab. The moisture is going to be held down by the coating. Possibly even saturating the concrete. Concrete is only STRENGTHENED by exposing it to moisture. Ask any concrete engineer. Once the initial set is on concrete, the concrete is only made stronger by completely submerging it in water. Concrete is ALWAYS curing. Concrete that is over 50 years old is HARDER NOW than it was 30 days after it was poured. Concrete reaches its DESIGN STRENGTH in 28 days.

So to answer your question NO you are NOT S.O.L. There are Epoxy solutions for your situation. If you need more advice Please PM me.
 
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sharpshooter

Well-known member
Joined
Oct 24, 2006
Messages
480
Location
West TN
Here's a pic of the bottom side. You can see the floor just to the bottom right. I'm just finishing the last pieces then clear the room out and put down the laminate.

Manards and Lowes has this product. The literature says that it will with stand a vehicle parked on it. The bottom plastic layer with the feet act as the vapor barrier. It is great for basement and garage floors. About $5/pc.
BILD0323.jpg

Whats that stuff called... I tried doing a search on lowes and came up empty...
 
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