Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
Black mold on plywood in attic.
The presence of mold in your attic is often the result of poor ventilation insufficient insulation moisture from a roof leak or improper venting from your bathrooms or kitchen.
Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present.
Leaks in the roof may also cause black mold in the attic.
The mold itself may have a cottony texture but can also be velvety leathery or.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
When you see the black mold cover broad locations of lumber typically this takes place since the wood obtained damp as well as remained damp while it was being saved.
In the vast majority of cases the mold growth is caused by condensation.
Mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green.
If it s damp and also warm and comfortable the development of the mold and also mildew and mold could be fast.
Mold on the underside of roof sheathing is also very common.
What causes black mold in attic mold species such as stachybotrys chartarum which looks like slimy growth loves attic basement bathroom and space under the sink.
Preventing black mold in the attic.