Condensation

[quikdraw92]

Hello all I Have a 10x16 shed ive insulated and has painted plywalled sides, Its divided into a 5x10 flower room and a 4x10 clone mother room, im have a condensation issue in the flower room its sealed room waiting on filter to get ventilation going, humidity gauge says its 60% at plant level but below the tables water is damp and floor is wet, will getting the filter hooked up solve this or do i have a bigger problem

thanks in advance for any info

 

[r2k]

Condensation happens when your walls or other surface is colder than the dew point of the air in the room. If you want to avoid condensation, you can:

1) Reduce humidity in the room with a dehumidifier.

2) Insulate the surfaces where condensation occurs so they aren't so cold. A layer of styrofoam insulation should work for this.


-r2k

 

[queequeg152]

the above is correct, though it should be added that increasing the temperature will also reduce condensation.

if you are interested, i suggest you consult some psychrometric charts, or learn learn about some basics psychometrics as its a very useful body of knowlage to have, as one can estimate what temperature walls and windows will ahve to reach in order to sweat.

 

[r2k]

I disagree a bit with raising temperature air temp to avoid condensation. Raising temperature will decrease relative humidity but it doesn't change the dew point temperature, which is when condensation occurs. If you don't raise the temp of the condensation surface, you will still get condensation if the only other change is air temperature goes up.

The condensing surface needs to increase temperature (maybe this is what queequeg152 meant?), which is what insulating the surfaces will do (but I didn't state that clearly). Insulation will prevent the outside cold temp from cooling the surface as much and the air inside the box will raise the surface temperature of the surface to prevent the condensation.

-r2k