Attic Rafters Mold

Here are some recommended methods to prevent mold growth.

Attic rafters mold. However if the mold infests the internal structures you need to shell out between us 10 000 and us 30 000. There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread. On attic mold visible on pine tongue and groove roof sheathing near the building eaves. The most common cause of attic mold by far is blocked or insufficient ventilation of the attic space.

Attics usually have a passive ventilation system in which outside air comes in through the soffit eave vents at the bottom warms up in the attic and escapes through the can or ridge vents at the top because hot air rises. This causes condensation to form on the cold surfaces in the attic especially roof rafters sheathing and trusses. The mold shown in the attic photographed above was identified as aspergillus sp. An average cost for standard mold remediation in an attic can cost between us 2 000 and 6 000 depending on the size and growth area.

Mix 1 teaspoon of white vinegar or tea tree oil with each cup of water that you need to attack your mold colony. Click photo for larger image. How to prevent black mold in attic. The attic is truss framed with plywood sheathing.

Attic mold is often caused by warm moist air from the house leaking into the attic space. 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. Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements. The white blown in insulation was used.