Attic Humidity Control

High humidity in an attic is usually caused by air leaks in the ceiling of the top floor of your house.

Attic humidity control.

During winter months humidity from this escaping air can condense on cold attic surfaces leading to mold. A moist attic means moist insulation and moist insulation is less effective. Here is a link to an article that describes the work. Air sealing an attic.

The difference in the two spaces is the dry bulb temperature. If the problem is the result of water or moisture penetrating the foundation or floor slab there are many remedial actions which may help. So they equalize pretty quickly. So the first step is to seal the air leaks.

Since you are going to install in. Size the next feature you have to consider is the dehumidifier size. Attic temperature depends on the outside temperature and it also depends if your house is insulated. 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.

Proper ventilation can help circulate the air reduce the heat build up in the attic and keep down humidity levels. When you insulate the top of your attic with spray foam you re bringing your attic into your home s envelope. Quelch the heat wave. Ventilation is another key factor.

We mean that literally by the way. Attic venting fans attic fans serve a different function removing the hot and moist air from the attic and leaving the space below the attic floor alone. Hot summer weather poses the opposite problem for maintaining recommended attic temperatures. Ideal attic temperature and humidity settings cold outdoor temperatures affect attics.

How to manage humidity in your spray foamed attic attics with spray foam insulation are so cool. If you raise the attic temperature the rh in both places would be the same. You can test the temperature level using a couple of thermometers. Continuous draining dehumidifiers come with limited water tanks based on their size.

The best solution for controlling moisture is at its source. Exhaust fans from cooking surfaces or the bathroom that are vented into your attic only redistribute humidity within your home. This is based on the. All such fans should be vented to the outside with the system checked for leakage.

These can include installation of seamless gutters and downspouts. For an attic to be properly ventilated it must also have a balanced system of intake and exhaust vents. The federal housing administration has recommendations for the amount of ventilation you will need based on the size of your home. Cold outdoor temperatures especially below freezing can wear on your furnace.