Mold On Roof Sheeting

Increasingly homeowners in the pacific northwest are noticing mold on the underside of their roof sheathing.

Mold on roof sheeting.

Appears due to this incorrect installation mold is forming on the underside of the roof sheathing. Mold usually causes a musty odor and may cause staining that may be black brown gray white yellow or green. So a house that we are in contract to buy just came back with mold in the attic sheathing of the roof. Skips a few trusses and reappears on the next panel or two.

Mold that grows on the underside of roof sheathing due to ideal mold growth conditions being present. The roof has baffles at alternating thusses soffit and ridge vents. The mold itself may have a cottony texture but can also be velvety leathery or. Scrub away the thickest buildup.

Mold on the underside of roof sheathing is also very common. To get rid of mold and other types of growth for good it s best to use a powerful. At the south end of the roof the ridge changes direction causing an overlay condition. Attic spaces are one of the most common places in a home for mold to be found growing.

And it seemed to be localized to one side of the sheathing not the other. This phenomenon occurs in vented attics and is more common in new homes than old homes. In the vast majority of cases the mold growth is caused by condensation. 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.

A 10 x 10 area of plywood has been removed to provide air into this area. One puzzling aspect of the phenomenon is that the mold is found in well built homes that comply with all relevant building codes. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. The inspector noted that the mold wasn t on the rafters.

Mix up your cleaning solution. The black mold is on the first 3 truss panels. He believes that poor ventilation was to blame and that by installing a ridge vent would prevent any. Use a long handled brush to scour the surface of the shingles and loosen stuck on.

Spraying the roof 1. Spray the entire roof thoroughly.