Moisture or frost on the roofs sheathing.
Attic sheathing wet.
The presence of mold inside your home even if it.
Water or drip marks scattered on the attic floor.
How does condensation get in the attic.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
In the vast majority of cases the mold growth is caused by condensation.
Wet sheathing was found in attic area due to lack of venting.
Moist or wet insulation.
When it was investigated my husband found that the the blown in insulation was blocking the vents the bath exhaust fan hadn t been vented outside the attic and that the sheathing was extremely wet.
When moisture gets into the attic it condenses on the roof sheathing in the form of frost.
These signs can vary contingent on the catalyst of the problem and are generally worse on north facing or shady sides of roofs.
Mold on attic sheathing.
There appears to be some kind of mold up there but there is no access to the attic due to a very low pitched roof.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
Frost itself doesn t do any damage but once it melts things get wet and then damage occurs.
Buckled or damaged roof sheathing.