Mold In Roof Attic

Also notice the condensation stains at the shingle nail more evidence of a history of attic moisture which was a factor in this mold growth.

Mold in roof attic. There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. In the vast majority of cases the mold growth is caused by condensation. If you have mold in the attic we recommend consulting with a mold removal specialist because. The chief cause of attic mold is poor ventilation.

Insulation is often affected. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. This occurs efficiently in attics with proper ventilation but attic mold can occur if the hot air meets the cold surface of the attic roof and creates condensation. Wooden beams and plywood may be affected and it can be difficult to remove all traces of mold from wooden surfaces.

Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. On attic mold visible on pine tongue and groove roof sheathing near the building eaves. The photo at the left was identified as a toxic mold that probably should be removed although the ease of movement generally tearing off a roof and roof sheathing and perhaps roof framing to remove mold would not be sensible nor cost justified. The mold shown in the attic photographed above was identified as aspergillus sp.

Click photo for larger image.