White Mold In Attic Roof

Identifying the roof cause of attic mold.

White mold in attic roof. If there is a leak in the roof plumbing or windows the mold will reappear if the water is. The photo at page top shows white attic mold on the roof sheathing and rafters and some brown or black mold on the attic side of ceiling drywall where we pulled back insulation. 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. Mold growth in an attic comes as a consequence of excess moisture.

In the vast majority of cases the mold growth is caused by condensation. Roof leaks will often lead to a small localized area of attic mold near where the leak is occurring. 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. Below are a few ways to check for possible roof leaks.

To prevent future mold growth remove the source of moisture causing it. White mold is lesser known but still an incredibly dangerous species of mold to deal with. In the attic photograph at left we show a mix of green gray and white attic mold. Rafters sheathing joists attic side of fascia boards etc.

Because the majority of attic mold cases are caused by condensation it means you ll rarely find a smoking gun. There are two main factors that cause condensation. This is where it gets tricky. This is why it s less common to see mold growth on base trim after a flooding event.

Check for areas of dark discoloration staining of wood e g. White mold tends to grow in high humidity environments rather than areas suffering from total saturation. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. The vast majority of attic mold is caused by humidity which is why white mold growth is common here.

Attic sheathing and framing. Prevent future mold growth. Faulty roof insulation or construction can lead to leaks and a lack of proper ventilation can cause humidity to accumulate. Typically the condensation is caused by several compounding factors.

With that said we ve learned quite a bit about white mold in our many years of mold inspection and removal. If you re ever unsure of what type you have calling in certified professionals to perform mold testing services immediately is important. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest.