And i suspect this happens during winter.
Black around nails in attic.
Roof leakage can often be seen as dark black stains concentrated and radiating out from one or more individual locations.
Taking nourishing food is vital therefore you should add food containing vitamin b6 and b12 in your diet.
Even our poorly vented attic below left was not as severely wet and moldy as the attic in grudzinski s photos above.
Our photograph above shows roofing nails protruding through plywood roof sheathing visible in an attic where there is no under roof condensation or moisture problem.
If these isolated spots are seen away from these roof penetrations then the roof may be damaged and leaking.
So likely the nails are very cold in winter and warm air in attic condenses around that.
Our example photos below show characteristic rust stains around roofing nails in a poorly vented attic below left and the absence of those stains around roofing nails in a well ventilated attic below right.
Once you notice black fungi growing in one part of the attic there could be a probability that it has been spreading to other areas.
Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored.
Ive seen roof shingle nails get rusty due to poor ventilation as this attic had lousy ventilation but never black and the sheathing turn black around the nail.
Deficiency of vitamin b6 and b12 is the chief cause of having dark skin around the nails.
These are commonly seen underneath roof vents plumbing stacks vent hoods and around chimneys.
Roof is new 5 yrs over an old layer.
Would this be mold starting at each nail site and is this black nails due to poor ventilation or old roof leaking at all the nail penetrations.
I live in nj.
Mold can form but often it.
Precautions need to be taken to take you those around you and the environment as safe as possible.
Be sure to inspect the entire area to rule out the possibility of other fungi affected.
For attic ventilation apart from soffits i also have a power vent which operates based on temperature.
After several years of this there may be dark rings around protruding roofing nails and larger dark spots or areas on the roof sheathing and or exterior gable walls.
Does mold on attic sheathing have to be removed.