Mold On Roof Sheeting

This phenomenon occurs in vented attics and is more common in new homes than old homes.

Mold on roof sheeting.

Scrub away the thickest buildup. And it seemed to be localized to one side of the sheathing not the other. Mold on the underside of roof sheathing is also very common. The black mold is on the first 3 truss panels.

At the south end of the roof the ridge changes direction causing an overlay condition. Attic insulation incorrectly installed and blocking soffit vents on north side of home. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Skips a few trusses and reappears on the next panel or two.

The inspector noted that the mold wasn t on the rafters. One puzzling aspect of the phenomenon is that the mold is found in well built homes that comply with all relevant building codes. Attic spaces are one of the most common places in a home for mold to be found growing. In the vast majority of cases the mold growth is caused by condensation.

Increasingly homeowners in the pacific northwest are noticing mold on the underside of their roof sheathing. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Mix up your cleaning solution. Spraying the roof 1.

If your state doesn t allow you to take a sample to send to a lab recommend testing by a certified mold assessor. Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. To get rid of mold and other types of growth for good it s best to use a powerful. Mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green.

A 10 x 10 area of plywood has been removed to provide air into this area. Spray the entire roof thoroughly. So a house that we are in contract to buy just came back with mold in the attic sheathing of the roof. The roof has baffles at alternating thusses soffit and ridge vents.

Appears due to this incorrect installation mold is forming on the underside of the roof sheathing. He believes that poor ventilation was to blame and that by installing a ridge vent would prevent any.