Green Mold On Underside Of Roof Sheathing

One puzzling aspect of the phenomenon is that the mold is found in well built homes that comply with all relevant building codes.

Green mold on underside of roof sheathing.

Below is a typical roof leak. After several years of this there may be. But these would still only affect a small area. This phenomenon occurs in vented attics and is more common in new homes than old homes.

This latter phenomenon occurs when the house is too humid and the warm moist air seeps into the attic where it condenses and freezes on cold attic areas. Increasingly homeowners in the pacific northwest are noticing mold on the underside of their roof sheathing. Condensation determining the cause of attic mold. Condensation occurring on the underside of plastic in the attic.

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 on the underside of roof sheathing is also very common. In the vast majority of cases the mold growth is caused by condensation. Generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified.

There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. 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. Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements. The mold growth and sheathing damage is limited to a small area.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Best procedures for cleaning mold contaminated wood. The mold itself may have a cottony texture but can also be velvety. Why mold grows mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green.

Mold on attic sheathing mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.