Having one but not the other creates poor air flow allowing moisture to accumulate and mold to take hold.
Mold in attic.
Dryer exhaust vents kitchen exhaust fans and bathroom exhaust fans.
Ideally your roof will have vents along the ridge as well as along the soffits.
The most common cause of attic mold by far is blocked or insufficient ventilation.
The chief cause of attic mold is poor ventilation.
What causes attic mold.
Heating ventilation and air conditioning ducts may also.
Blocked or insufficient ventilation.
Insulation is often affected.
High humidity in a space like an attic can lead to mold and a spill in a carpeted area of your home that isn t quickly taken care of can also lead to mold under the carpet.
Can lights wall drywall junctions wall framing members ductwork bathroom vents etc.
Mold in your attic is not the biggest concern.
It is caused by excessive moisture from air movement from humid air in your home to a low humid attic with lower temperatures.
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.
By far the most common cause of mold in your attic is improper ventilation.
You should remedy this by air sealing areas in your attic.
If you have mold in the attic we recommend consulting with a mold removal specialist because.
Wooden beams and plywood may be affected and it can be difficult to remove all traces of mold from wooden surfaces.
Causes of mold while damp and warm climates are a prime breeding ground for our fuzzy friend other conditions that bring mold include lack of ventilation and proper sheathing.
Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.