Mold On Roof Rafters

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

Mold on roof rafters.

There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. Fourth the residual mold staining is treated with an encapsulant. Third the attic is dried out either using natural air flow or mechanical heating and dehumidification. Mold requires two things to grow.

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. The black mold is on the first 3 truss panels. And eventually cause wood rot and reducing the life of your roof. The nutrients are usually organic materials such as dust dirt and the.

At the south end of the roof the ridge changes direction causing an overlay condition. Water and mold problems in the attic can deteriorate wood in the roof sheathing joists etc. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Re roofing with lining lining papers sarking roofing felt can cause severe mold growth and rot due to reduced ventilation.

Cleaning mold from irregular or hard to reach wood surfaces media blasting. In the vast majority of cases the mold growth is caused by condensation. Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements. This causes condensation to form on the cold surfaces in the attic especially roof rafters sheathing and trusses.

If mold needs to be removed from a roof deck through which roofing nails penetrate hand wiping is not feasible. At some point you will probably need to go to your attic for something. Perhaps you use it for storage. Attic mold is often caused by warm moist air from the house leaking into the attic space.

Second the current mold growth is killed with a fungicide. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Moisture in your attic typically comes from leaks or condensation. If the insulation has been affected by the mold remove it in thick trash bags and replace it with new insulation after you complete your mold remediation.

Skips a few trusses and reappears on the next panel or two. Examine the insulation along your rafters. Power cleaning using spray equipment such as media blasting using baking soda or dry ice is very effective for these surfaces.