By adding moisture to the lower floor you increase the partial pressure of the water vapor which pushes it to areas of lower vapor pressure like the attic.
Remove humidity from attic.
During winter months humidity from this escaping air can condense on cold attic surfaces leading to mold.
However you ll need to drain it frequently in order for it to function properly.
Dehumidifiers are really just a.
As the moisture migrates upwards to the colder attic areas during the winter months the relative humidity is increased to the point that condensation can occur on cold surfaces.
Water in your attic can damage wood.
Once the dehumidifier s storage tank is full it won t be able to remove any more moisture.
For months afterward owners will complain of condensation biological growth high relative humidity etc and everyone tries to solve the issue by messing with the air conditioning.
How to dry out an attic.
Drying out a wet attic.
The difference in the two spaces is the dry bulb temperature.
Still got high humidity.
So they equalize pretty quickly.
If you raise the attic temperature the rh in both places would be the same.
This can result in mold rust and deterioration of wood and structural fasteners.
Here is a link to an article that describes the work.
Though attics are typically hot and dry a leaky roof or pipe condensation or severe weather can cause water to enter your attic.
Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.
Placing a dehumidifier inside the attic will help to draw out moisture from the surrounding environment.
A dehumidifier can remove it.
These tropical weather events increase the amount of moisture in the home while at the same time impacting the ability of the equipment to remove the moisture.
Put a dehumidifier up there plug it in set it between 50 and 60 rh and forget about it.
So the first step is to seal the air leaks.
After from sealing things up and fixing your pressure balance this is usually the best solution to high humidity in a spray foamed attic.
Air sealing an attic.
Install a dehumidifier in your attic.
Remove excess moisture in some cases as with a roof leak issue you may have standing water to contend with in your attic.