High humidity in an attic is usually caused by air leaks in the ceiling of the top floor of your house.
High humidity attic winter.
If the temp stays above sixty at night and during the day then the humidty level stays in the 50s or below.
So the first step is to seal the air leaks.
In order to avoid attic condensation it is important to make sure that the attic receives proper ventilation and that it is properly protected from the outside elements two of the most common causes of attic condensation are high levels of humidity within the living spaces beneath the attic and moisture seeping in through the roof.
If you ve got a spray foamed attic and you ve got high humidity here s how to fix it for good.
Air sealing an attic.
When it exceeds that threshold by too much and for too long you could experience problems like mold growth.
High humidity in the attic insulating the underside of the roof deck solves one problem and.
But the humidity level still too high for my.
For those who are having a problem with attic condensation.
If you notice condensation on your windows and walls find peeling wallpaper or bubbled paint or see mold spots around the house your home s humidity is too high.
Advani says he runs a dehumidifier in the basement during the summer and a whole house humidifier in the winter.
During winter months humidity from this escaping air can condense on cold attic surfaces leading to mold.
Awareness of proper attic ventilation is at an all time high.
An indoor humidity of between 45 to 55 percent is ideal but anything higher will cause problems.
Here is a link to an article that describes the work.
The humidity gets to the high nineties when the temp gets below 40 at night and then drops to 60 once the attic temp reaches the sixties.
If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck.
To find out how serious your humidity issue is hang a hygrometer on your wall.
During the spring summer and fall relative humidity rh in a spray foamed attic often exceeds the comfort threshold of 60.
During the winter months the recommended relative humidity inside a house is anywhere between 30 50 percent.
Indoor humidity can soar.
The attic temp is generally around 10 degrees higher than the outside temp.
High humidity doesn t necessarily mean the there is more moisture just that the air is having a tougher time holding the.
When it s not running the humidity in the attic drifts steadily toward 100 percent over a.
The normal indoor humidity range in winter should be 15.
