Mold in attic is fairly common because attics are often damp.
Mold in roof space.
In the vast majority of cases the mold growth is caused by condensation.
Causes of mold while damp and warm climates are a prime breeding ground for our fuzzy friend other conditions that bring mold include lack of ventilation and proper sheathing.
Picture of mold in the attic.
Systemic growth occurs when the roof leak causes enough moisture buildup in the attic to cause mold growth throughout the entire area.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
Even if your roof and windows don t leak though humidity in the attic can lead to the growth of mold.
However there are some common conditions that we routinely find during our mold investigations that are leading contributors to mold growth in attics.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
High humidity in a space like an attic can lead to mold and a spill in a carpeted area of your home that isn t quickly taken care of can also lead to mold under the carpet.
Roof leaks cause two types of mold growth.
Mold on attic sheathing.
Cause 1 roof leaks.
What does attic mold growth from a roof leak typically look like.
If your roof leaks or any attic windows leak you ve got moisture in your attic and probably need to consider attic mold removal.
Systemic or limited growth.
Mold found in attic areas can be challenging at times when trying to pinpoint the exact cause and source of mold growth.