After from sealing things up and fixing your pressure balance this is usually the best solution to high humidity in a spray foamed attic.
Putting a dehumidifier in the attic.
The dehumidifier pulls air through the return removes humidity and dumps the dry air into the same supply plenum that s connected to your main indoor hvac unit.
A dehumidifier is supposed to make a room more comfortable by reducing the amount of moisture in the air to an ideal level.
In the attic attach four steel hanging bars and the metal pan from the collar ties.
Set the whole house dehumidifier in the metal pan.
Adding a dehumidifier can be a great way to have a dramatic impact on this issue.
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.
If you raise the attic temperature the rh in both places would be the same.
Put a dehumidifier up there plug it in set it between 50 and 60 rh and forget about it.
Best dehumidifier for an attic.
The difference in the two spaces is the dry bulb temperature.
A dehumidifier can remove it.
Measure static pressure and make adjustments.
Install a dehumidifier in your attic.
Where to place a dehumidifier in an attic.
Ideally it wants to be located as centrally as possible so the whole room can be dehumidified evenly.
The dry air enters your home through normal hvac supply pathways.
Clean up any standing water with large absorbent towels or a wet dry vacuum.
The ventilation requirement varies from attic to attic as well as during the course of the year.
The placement of a dehumidifier in your attic is the same as for any other room.
Ventilating an attic too much can also cause problems.
This little machine will be able to directly absorb the humidity that s in the air and replace it with colder drier air in an instant.
Position the pan very close to the air conditioning unit.
Built in construction moisture can also cause humidity and mould in the attic.
Because of the many conditions which can cause foundation moisture penetration and the many solutions each house should be individually evaluated to determine the cause and the best possible solution for the problem.
If you can t position it centrally it should be at least 6 inches away from walls or any objects that can interfere with airflow.
So they equalize pretty quickly.
In the right place it can make air conditioning more effective and prevent mold damage.
Locate the source of the water.
If the outdoor air is cold the air in the attic is cooled and can cause condensation against the cold.
Using a dehumidifier and installing a perimeter draining system can further reduce moisture in the foundation or floor slab.
Still got high humidity.
If it s a leaky roof or pipe place buckets underneath the leak to collect the water until you can fix the.
If it s put in the wrong place however it can t function properly or even worse it could become an electrical hazard.