Mold On Attic Rafters

Faulty roof insulation or construction can lead to leaks and a lack of proper ventilation can cause humidity to accumulate.

Mold on attic rafters.

When looking for. What causes black mold in attic. Attic mold is often caused by warm moist air from the house leaking into the attic space. Mold species such as stachybotrys chartarum which looks like slimy growth loves attic basement bathroom and space under the sink black mold can also grow behind the walls or attic ceilings completely undetected until the occupants smell the presence or experience health problems.

Roof leaks will often lead to a small localized area of attic mold near where the leak is occurring. In the attic photograph at left we show a mix of green gray and white attic mold. In our roof interior attic photo at left you can see antique roof framing along with black stains and probably some mold growth from a long history of roof leaks. Below are a few ways to check for possible roof leaks.

Even in this case in our opinion the reasons to remove and replace roof sheathing and framing would normally be based on the condition of the roof framing and sheathing not on the. This causes condensation to form on the cold surfaces in the attic especially roof rafters sheathing and trusses. Check for areas of dark discoloration staining of wood e g. Mold growth in an attic comes as a consequence of excess moisture.

You actually want your attic to remain very cool during colder months for this reason.