elgato Posted July 19, 2012 Report Share Posted July 19, 2012 Found this in a vacant home. It's "growing" on finished OSB in a basement ceiling. Right next to an obviously leaking HVAC joint. Clearly condensation from the cool HVAC supply has allowed something to grow on the OSB. I'm calling it " some type of growth ", but has anyone else seen this? and if so, what is it? algae? Click to Enlarge 75.09 KB Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted July 19, 2012 Report Share Posted July 19, 2012 Looks like some kind of fungus. Probably one of the ones that are commonly called mold. Quote Link to comment Share on other sites More sharing options...
Inspectorjoe Posted July 19, 2012 Report Share Posted July 19, 2012 So that explains the heading, WTF:What's this, fungus? Quote Link to comment Share on other sites More sharing options...
Erby Posted July 19, 2012 Report Share Posted July 19, 2012 Very intuitive of you, Joe. Quote Link to comment Share on other sites More sharing options...
Jim Baird Posted July 19, 2012 Report Share Posted July 19, 2012 gato, I'd feel comfortable calling it a WDO. BTW, what is a "leaking HVAC joint"? The OSB looks positively saturated to my eye. I found a long narrow ceiling stain once that was due to a condensate drain that was fractured along its length in an attic space. Looked for all the world like it had been stepped on. Quote Link to comment Share on other sites More sharing options...
ericwlewis Posted July 20, 2012 Report Share Posted July 20, 2012 Found this in a vacant home. It's "growing" on finished OSB in a basement ceiling. Right next to an obviously leaking HVAC joint. Clearly condensation from the cool HVAC supply has allowed something to grow on the OSB. I'm calling it " some type of growth ", but has anyone else seen this? and if so, what is it? algae? Click to Enlarge 75.09?KB what is "finished OSB"? It sounds like the entertainment center I made in high school. Quote Link to comment Share on other sites More sharing options...
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