Organic materials to feed off moisture warmth and darkness.
Mold on roof plywood.
It is not required to eliminate all discolorations from wood.
Fungal spores hyphae and conidiophores the spore producing structures of mold.
At the intersection of the plywood overlays the upper sheets contain black mold spreading about 2 3 up the slope.
From the outsidethere are a couple of dips in the plywood which appear as though thes areas were loaded with shingles during re roof.
It is not necessary to remove all stains from wood.
However the plywood roofing over the front porch area was all covered with mold.
Fungus spores hyphae as well as conidiophores the spore creating frameworks of mold.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
It also dips along the edge where the moldy plywood exists.
When moisture is present on the plywood mold spores can begin to attach and grow.
In the vast majority of cases the mold growth is caused by condensation.
So it looks like cold roof effect mostly affects the sheathing itself but the lumber under it is relatively safe from it.
Mold requires a few key elements in order to grow and thrive.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
How to remove mold from wood framing plywood sheathing tongue and groove subfloor or roof decking the object in cleaning mold from a wood surface is to remove all fungal material from the surface of the wood.