When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. This can be caused by the action of moisture interacting with the tannins in the plywood. The picture above is from a long-standing moisture condition in an attic where much of the roof sheathing has turned black.
How do you remove black mold from plywood in attic?
Black Mold Removal Methods for dealing with attic sheathing mold include hand sanding, encapsulation and dry ice blasting. Even with hand sanding and encapsulation, the use of fungicides is often necessary, and dry ice blasting can be expensive and dangerous.
Can you get black mold out of plywood?
Treat exposed molded subflooring with a mixture of 1 cup of borax and 1 gallon of water or an EPA-registered mold removal product. Spray the solution on the moldy plywood. You can also soak affected subflooring with a brush broom. Wait 10 minutes, scrub the area, and repeat the process two more times.Nov 2, 2020
How do you treat black mold on plywood?
- Combine a tablespoon of borax with a cup of water, then apply this solution to the mold with a soft-bristled brush.
- Scrub away the mold, leaving the borax solution in the wood.
Can black mold grow on plywood?
What Causes Black Mold on Plywood? Black mold doesn't appear on plywood just like that. To remove it completely, it's crucial to understand why it grows in the first place. Moisture is black mold's best friend, and it grows in places that are exposed to excessive moisture.