Mold On Roof Rafters

Mold problems are indications of water problems.

Mold on roof rafters.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. The black mold is on the first 3 truss panels. Cleaning mold from irregular or hard to reach wood surfaces media blasting. Water and mold problems in the attic can deteriorate wood in the roof sheathing joists etc.

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. Power cleaning using spray equipment such as media blasting using baking soda or dry ice is very effective for these surfaces. At some point you will probably need to go to your attic for something. Skips a few trusses and reappears on the next panel or two.

The roof has baffles at alternating thusses soffit and ridge vents. If mold needs to be removed from a roof deck through which roofing nails penetrate hand wiping is not feasible. 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. At the south end of the roof the ridge changes direction causing an overlay condition.

Re roofing with lining lining papers sarking roofing felt can cause severe mold growth and rot due to reduced ventilation. Fourth the residual mold staining is treated with an encapsulant. Examine the insulation along your rafters. 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 is often caused by warm moist air from the house leaking into the attic space. The nutrients are usually organic materials such as dust dirt and the. Third the attic is dried out either using natural air flow or mechanical heating and dehumidification.

Mold requires two things to grow. 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. A 10 x 10 area of plywood has been removed to provide air into this area.

Perhaps you use it for storage. In the vast majority of cases the mold growth is caused by condensation. Second the current mold growth is killed with a fungicide.