(Paul Cummins, 333800000604)
May 8, 2015, 5:57pm
This attic had much of the sheathing replaced. A few dark mold spots were evident as in the first picture. The white streaks in the second photo were quite prevalent… haven’t seen them before… are they also mold? The master bedroom tested positive for all nasty mold types.
(Geff Spry, CMI)
May 18, 2015, 2:22am
Appears to be mold that is white,tough to tell from a picture though.
July 15, 2015, 11:41am
I think these white streaks are also molds, but not a black one. Post more images, than I will gave you a better idea about that.
(ROBERT YOUNG, CMI)
July 18, 2015, 3:19pm
OH MY GOD!!!
EFLORESCENCE AND SUSPECT WHITE MOLD.
To ascertain if staining is mineral or organic, touch it.
Try to wipe it with your finger or an object.
NO LICK TESTS!!!
Organic matter, suspect mold, yeast, or fungus will be raised white or other colored hyphae.
Minerals are hard surfaced.
(Kirk Middleton, C.E.T.)
September 20, 2015, 5:18pm
Do you have any more info on mineral staining? Is it a problem? I’ve seen it before and just recommend a qualified contractor assess because I didn’t know much about it.