Improper exhausting of bathroom fans or dryer vents.
Mold in attic insulation.
If you re layering insulation atop other insulation don t use the kind that has kraft face finish i e paper or foil backing.
If you have mold in the attic we recommend consulting with a mold removal specialist because.
This moisture feeds mold growth.
The most common cause of attic mold by far is blocked or insufficient ventilation.
Close up of mold growth on white fiberglass insulation.
3 fog the attic with a mildicide.
Cardboard paper or loose fill insulation should be disposed of as these will be practically impossible to clean.
Wooden beams and plywood may be affected and it can be difficult to remove all traces of mold from wooden surfaces.
This would be considered light mold growth.
What causes attic mold.
Insulation is often affected.
Brush all contaminated porous insulation such as fabric or foam with a wire brush to remove loose mold.
Wet insulation should be removed as quickly as possible and allowed to dry.
Heating ventilation and air conditioning ducts may also.
This is unusual and typically only occurs when an attic suffers from.
Replacement of insulation may be necessary if this is the case.
Blocked or insufficient ventilation.
Unfortunately improper installation or choosing the wrong kind of insulation causes moisture from the lower levels of the home to rise and get trapped in the attic.
If the mold growth in the attic is pronounced you may see it presenting atop attic insulation.