Generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified.
Mold in roof rafters.
In this case the moisture buildup is indirect the roof leak only affects a small area but the dampness in the air causes condensation throughout.
There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread.
Seal off the area.
Perhaps you use it for storage.
Examine the insulation along your rafters.
Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.
Power cleaning using spray equipment such as media blasting using baking soda or dry ice is very effective for these surfaces.
When removing mold from your attic your first concern should be protecting the rest of your home from it.
Mold problems are indications of water problems.
In the vast majority of cases the mold growth is caused by condensation.
At some point you will probably need to go to your attic for something.
If mold needs to be removed from a roof deck through which roofing nails penetrate hand wiping is not feasible.
This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate.
Water leaks and poor ventilation leading to condensation are the main roof defects which give rise to a variety of fungi moulds and insect attacks.
Seal off the.
Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.
Systemic growth occurs when the roof leak causes enough moisture buildup in the attic to cause mold growth throughout the entire area.
And eventually cause wood rot and reducing the life of your roof.
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 smoothness.
Water and mold problems in the attic can deteriorate wood in the roof sheathing joists etc.
Cleaning mold from irregular or hard to reach wood surfaces media blasting.
Clean up the area.