Mold In Attic Roof Sheathing

The roof has baffles at alternating thusses soffit and ridge vents.

Mold in attic roof sheathing.

Moisture in your attic typically comes from leaks or condensation. Water and mold problems in the attic can deteriorate wood in the roof sheathing joists etc. Mold problems are indications of water problems. The nutrients are usually organic materials such as dust dirt and the.

At some point you will probably need to go to your attic for something. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. Perhaps you use it for storage. Increasingly homeowners in the pacific northwest are noticing mold on the underside of their roof sheathing.

This appears to be mold on the roof sheathing in the attic. On the east side only there is black mold for the first 6 up the slope. It wasn t until the mid 1980s that the energy codes changed. The white blown in insulation was used.

This phenomenon occurs in vented attics and is more common in new homes than old homes. And eventually cause wood rot and reducing the life of your roof. There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.

Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. 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. One puzzling aspect of the phenomenon is that the mold is found in well built homes that comply with all relevant building codes. In the vast majority of cases the mold growth is caused by condensation.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Mold on the underside of roof sheathing is also very common. Mold requires two things to grow. It is only on the back side of the house and is darker towards the bottom.

Since the house is 31 years old the chances for condensation staining on the relatively low pitched roof sheathing are significant. The added layer of insulation in the attic floor is blocking the soffit vents.