Roof Sweating In Attic

Roof condensation has a very specific cause.

Roof sweating in attic.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. If there is excessive moisture accumulation in your attic it will condense on cold areas mainly on the underside of your roof deck. Water found in these places is commonly caused by condensation in the attic. Most people assume this is caused by a leaking roof but that might not be the source.

The rapid cooling leads to immediate condensation. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. This could be a sign that your excessive indoor humidity is causing damage elsewhere in places you cannot see such as. In the vast majority of cases the mold growth is caused by condensation.

It s no surprise that this tends to occur more in colder months when home heating is more common and intense. Excessive indoor humidity can cause blistering and peeling paint warping and rotting wood as well as the formation of mildew mold. Your walls ceilings floors and your attic roof. Moisture occurs when heated air inside the home rises up to the roof where it meets the colder temperatures of outside air.

Fixing this issue can be less costly than replacing a roof but it should be addressed as soon as possible.