Why is my attic so humid?
Updated: Jan 19
Attic humidity can be caused by a variety of factors, including poor ventilation, leaks in the roof, and high levels of humidity in the surrounding air. One of the main causes of attic humidity is poor ventilation. When the attic is not properly ventilated, warm, moist air from the living spaces below can rise into the attic and condense on cool surfaces, such as the roof deck and rafters. It can also come from bathroom, kitchen, and laundry fans not being ventilated to the exterior of the home properly. This can lead to mold growth, rot, and other damage.
Another common cause of attic humidity is leaking in the roof. If water is able to penetrate the roofing material and enter the attic, it can lead to mold growth, rot, and other damage. In addition, if the insulation in the attic is wet, it will not be able to properly insulate the living spaces below, leading to higher energy bills.
High levels of humidity in the surrounding air can also contribute to attic humidity. During the summer months, when the air is hot and humid, it can be more difficult to keep the attic dry. In these cases, it is important to make sure that the attic is properly ventilated to allow for the exchange of hot, humid air with cooler, drier air.
To prevent attic humidity, it is important to make sure that the attic is properly ventilated, that the roof is in good condition and free of leaks, and that the insulation is dry and in good condition. It may also be helpful to install a dehumidifier in the attic to help reduce the amount of moisture in the air. Additionally, regular inspection of the attic for signs of mold, rot, or leaks is important.
To have your roof and attic inspected, schedule a free consultation with one of CCC's trained roofing specialists. It is important to ensure the roof is in good condition and free of leaks and regularly inspect the attic for signs of mold, rot, or leaks.
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