Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
Mold on roof plywood.
At the intersection of the plywood overlays the upper sheets contain black mold spreading about 2 3 up the slope.
In the vast majority of cases the mold growth is caused by condensation.
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.
When moisture is present on the plywood mold spores can begin to attach and grow.
Organic materials to feed off moisture warmth and darkness.
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 also dips along the edge where the moldy plywood exists.
It is not necessary to remove all stains from wood.
The item in cleansing mold from a wood surface area is to get rid of all fungus product from the surface area of the wood.
It is not required to eliminate all discolorations from wood.
When warm moist air from your home rises up it has the ability to go to your attic and become condensation which attaches to attic sheathing.
Mold requires a few key elements in order to grow and thrive.
Fungal spores hyphae and conidiophores the spore producing structures of mold.
No mold on the framing that supports that plywood though.
Fungus spores hyphae as well as conidiophores the spore creating frameworks of mold.