Originally Posted By: kdolin
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ok ok so this subject line has been used before I know. Let me put it two ways first, I have recently been making note of a substance on the surface of the attic trusses of some of our larger new home developments. This would appear to be mold, green in color mostly, typically on the face of the beams and in random locations throughout the attic space. no moisture is present in the surface or surrounding areas and it would not appear to be as a result of water intrusion. the ventilation of the attic is adequate and temperatures are normal.
This basically would appear to be growth that has formed on the trusses prior to installation or during the installation process prior to sheathing. I have noted similar growth in older and very water tight well ventilated attics. Though I have not tested the areas specifically to identify the type of growth , the consensus is a sap stain fungus or similar type of mold.
Any opinions? has anyone found similar evidence?