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.
Humidity in attic problem.
Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.
With outside temperatures ranging between 5 f and 95 f attic temperatures range between 48 f and 92 f.
One of the most common problems that homeowners run into is high humidity levels.
If your customers find that their attic is feeling a little humid especially during the warmer months of the year then it s probably time for them to explore some solutions.
Advani hopes to finish the attic and install a minisplit although he s not sure that will lower the humidity.
It wouldn t solve the problem of high humidity in the attic though.
The best solution to solving a moisture problem is to control the moisture at its source.
Only about 10 of the hip roof is shaded so it gets plenty of direct sunlight.
You can do that by directly conditioning the attic with supply air by blowing conditioned air from the house into the attic by exhausting air from the attic to outdoors or by using a dehumidifier.
You can use a hygrometer to test humidity levels or if you notice mold on material in the attic this is a good sign that humidity levels are too high.
Bathroom fan venting into the attic.
If you ve got a spray foamed attic and you ve got high humidity here s how to fix it for good.
For an attic to be comfortable its relative humidity should measure no more than 60.
To wrap it up if you have problems with high humidity in your attic purchasing a dehumidifier is a good idea but you should also try to figure out the root cause of the problem.
If the problem is caused by a humidifier moisture can be reduced by adjusting the humidistat control disabling the humidifier or repairing the humidifier.
If you have high temperatures and high humidity in your attic then you may also have a problem with mold.
This condition occurs when hot humid ocean breezes blows into the attic via soffit vents and causes humidity in the attic to rise and attic ductwork to reach dew point.
Ventilation is another key factor.
During the spring summer and fall relative humidity rh in a spray foamed attic often exceeds the comfort threshold of 60.
Attic moisture usually appears because of condensation.
Because of the relatively moderate temperature in these areas moisture can go unnoticed and may not cause any problems there.
If you don t do that you ve got to reduce the amount of water vapor in the attic.
The normal indoor humidity range in winter should be 15.