Green Mold On Underside Of Roof Sheathing

Best procedures for cleaning mold contaminated wood.

Green mold on underside of roof sheathing.

White and green fuzzy growth on osb sheathing. Mold on the underside of roof sheathing is also very common. Condensation determining the cause of attic mold. There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread.

But these would still only affect a small area. 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. This phenomenon occurs in vented attics and is more common in new homes than old homes. Mold on attic sheathing mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.

Below is a typical roof leak. After several years of this there may be. The mold growth and sheathing damage is limited to a small area. One puzzling aspect of the phenomenon is that the mold is found in well built homes that comply with all relevant building codes.

Generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified. In the vast majority of cases the mold growth is caused by condensation. Mold growth provided it is not just cosmetic mold which can simply be left alone can be cleaned from wood surfaces by blasting scrubbing or even simple surface wiping depending on the surface accessibility and. Why mold grows mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green.

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. The mold itself may have a cottony texture but can also be velvety. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. 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.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.