Mold On Roof Plywood

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 on roof plywood.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. At the intersection of the plywood overlays the upper sheets contain black mold spreading about 2 3 up the slope. It also dips along the edge where the moldy plywood exists. From the outsidethere are a couple of dips in the plywood which appear as though thes areas were loaded with shingles during re roof.

Fungal spores hyphae and conidiophores the spore producing structures of mold. 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. It is not necessary to remove all stains from wood.

It is not required to eliminate all discolorations from wood. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. No mold on the framing that supports that plywood though. Fungus spores hyphae as well as conidiophores the spore creating frameworks of mold.

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. Mold requires a few key elements in order to grow and thrive. So it looks like cold roof effect mostly affects the sheathing itself but the lumber under it is relatively safe from it.