Causes of surface dampness on concrete slabs and garage floors.
Why does my concrete garage floor sweat.
When relatively warm moist air comes in contact with a very cool concrete slab the cold temperature of the concrete will cause the air that comes in contact with it to cool.
Humidity warm and humid air condenses into surface moisture when it comes into contact with the cool surface of your concrete floor or slab.
What causes this and what can we do about it condensation on a garage floor could be the result of the lack of a vapor barrier under the concrete slab.
The second cause of concrete sweating is sub surface moisture.
If you have concrete in your home that routinely appears to be wet or feels damp then you may have sweating slab syndrome.
Why does my concrete floor sweat.
As explained above in the phenomenon of concrete sweating this is the major cause for the concrete sweating.
Usually warm moist air and relative humidity enter the structure through the several openings windows doorways and vents.
Moisture as you would guess is the underlying cause of sweating on concrete floor slabs.
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To be honest this is very rare especially in a garage or warehouse.
1 the most likely reason a garage floor will sweat is warm moist air has entered from the outside and condensed water on the garage floor because the floor s temperature is below the dew point.
After a humid night water vapor in the air will come into contact with the cooler concrete floor and will condense into morning dew.
When warm humid air from outside comes into contact with the cold concrete the air rapidly cools and condenses on the surface causing the wetness.
Condensation occurs when moist air comes into contact with the cool concrete of the garage floor.
Concrete sweating usually occurs when warm air comes into contact with a cooler concrete slab and it causes the concrete floor to sweat.
A concrete garage floor may sweat for one or more of the following reasons.
Why garage floors sweat before you stop the floor from sweating you have to investigate as to what s causing it.
Subsurface moisture is caused when hydrostatic pressure pushes water and moisture up through the concrete from below the surface.
For most floors condensation is the main reason for the sweating especially in warm weather.
This usually happens when concrete slabs and the other materials that sweat reach dew point temperature.
