Black Mold On Roof Sheathing

Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.

Black mold on roof sheathing.

The presence of mold in your attic is often the result of poor ventilation insufficient insulation moisture from a roof leak or improper venting from your bathrooms or kitchen. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. The following picture is of a long standing moisture condition in an attic where much of the roof sheathing has turned black. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present.

Mold can form but often it. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Mold on attic sheathing. The effects of mold exposure depend on your health and the amount of mold you re exposed to.

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. Best procedures for cleaning mold contaminated wood. Even in this case in our opinion the reasons to remove and replace roof sheathing and framing would normally be based on the condition of the roof framing and sheathing not on the. There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread.

Black mold refers to several species of mold which is a type of fungus that have a dark green or black appearance. In the vast majority of cases the mold growth is caused by condensation. In our roof interior attic photo at left you can see antique roof framing along with black stains and probably some mold growth from a long history of roof leaks. This can be caused by the action of fungal growth and molds and the affect they have on the tannins in the wood.

When moisture condenses on plywood roof sheathing repeatedly or continuously the wood will turn black. One such type is stachybotrys chartarum. The color of a mold isn t. After several years of this there may be dark rings around protruding roofing nails and larger dark spots or areas on the roof sheathing and or exterior gable walls.