Insulation is often affected.
Mold in roof attic.
Particularly in cold climates when homeowners heat their homes in winter hot air tends to escape through the attic.
There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread.
Heating ventilation and air conditioning ducts may also.
Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
On attic mold visible on pine tongue and groove roof sheathing near the building eaves.
The chief cause of attic mold is poor ventilation.
If you have mold in the attic we recommend consulting with a mold removal specialist because.
The mold shown in the attic photographed above was identified as aspergillus sp.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
Click photo for larger image.
In the vast majority of cases the mold growth is caused by condensation.
Also notice the condensation stains at the shingle nail more evidence of a history of attic moisture which was a factor in this mold growth.