“Lumber that is solid and piled in moist weather conditions will have a tendency to mildew, leaving a dark almost black stain on the lumber. As lumber is exposed to the atmosphere, the moisture content goes down and it will equalize in the surrounding atmosphere at about 11%. This is well below the level needed to support fungi or mildew.” LACN
“Molds are typically characterized as fungi that discolor the wood surface through the production of pigmented spores that can be yellow, green, orange, black and an array of other colors. WWPA, Pg 4. Mold spores are present on surfaces in all homes, so cleaning will not prevent re-growth of mold (Taylor, 2004).