Black Mold On Roof Plywood

How mold on plywood in attic spreads.

Black mold on roof plywood.

Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. This article offers advice on cleaning mold found on surfaces of un finished wooden building materials such as framing lumber rafters floor joists wall studs and building roof wall and floor sheathing such as plywood tongue and groove pine boards and other structural wood surfaces in buildings. Mold rots and wears away roofing surfaces allowing the roof to sag leak and eventually cave in. To prevent future mold growth remove the source of moisture causing it.

In the vast majority of cases the mold growth is caused by condensation. Move any un moldy plywood boards to a new storage area or remove the cause of the mold to prevent mold from growing on other boards. If you discover an infestation it is vital that you address it immediately to avoid hazardous damages. The roof has baffles at alternating thusses soffit and ridge vents.

Mold is a very real threat to the integrity of your home. On the east side only there is black mold for the first 6 up the slope. Best procedures for cleaning mold contaminated wood. Mold usually grows due to excess moisture in the area either in the air or on a surface.

If there is a leak in the roof plumbing or windows the mold will reappear if the water is. Prevent future mold growth. This can be caused by the action of fungal growth and molds and the affect they have on the tannins in the wood. How to get rid of black mold on wood and plywood this short article provides insight on cleansing mold discovered on surface areas of un finished wood structure products such as mounting lumber rafters flooring joists wall surface studs and also structure roof covering flooring and also wall surface sheathing such as plywood tongue and groove ache boards and also various other.

On the east side of the house only the plywood for the first three trusses is black for about 6 feet up from the eaves. When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. The attic is truss framed with plywood sheathing. The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black.

What s causing black mold under roof sheathing. The white blown in insulation was used. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. The black mold is on the first 3 truss panels.