Why Does My Concrete Garage Floor Sweat

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.

Why does my concrete garage floor sweat.

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. Why does my concrete floor sweat. Concrete sweating usually occurs when warm air comes into contact with a cooler concrete slab and it causes the concrete floor to sweat.

Condensation occurs when moist air comes into contact with the cool concrete of the garage floor. Humidity warm and humid air condenses into surface moisture when it comes into contact with the cool surface of your concrete floor or slab. 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. As explained above in the phenomenon of concrete sweating this is the major cause for the concrete sweating.

Today s homeowner serves cookies to analyze traffic and better serve you. 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. To be honest this is very rare especially in a garage or warehouse.

For many homeowners the reason for a slick garage floor is condensation. This is not actually a problem with the construction however but an issue that can often be controlled or eliminated by changing the upkeep of the area and in some cases the controlled climate conditions. The second cause of concrete sweating is sub surface moisture. This usually happens when concrete slabs and the other materials that sweat reach dew point temperature.

Moisture as you would guess is the underlying cause of sweating on concrete floor slabs. Subsurface moisture is caused when hydrostatic pressure pushes water and moisture up through the concrete from below the surface. 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. Usually warm moist air and relative humidity enter the structure through the several openings windows doorways and vents.

If you have concrete in your home that routinely appears to be wet or feels damp then you may have sweating slab syndrome.