Mold test

[David K. Lee]

Wht substance on the rafters appears to be mold. There is poor ventilation and an HVAC system in the attic. I would recommend it be tested. What do you guys think?

[James E. Braun, CMI]

It does not look like mold, more like lime such as concrete. Does it rub off?

Or even better, what does it taste like?

[mhoefling]

Couldn't you say something to the effect "Unknown white substance, further testing is needed" or something like that. I personally do not know what it is but if you find out I would be interested in knowing.

[agallatin]

If it was mold , it would not be just on one side of that rafter . It looks to be a recycled piece of lumber . Which quite common in framing a house . I would think it is concrete stuck on there . Would be much easier to tell in person .

[agallatin]

Also looking again there appears to a problem with moister at joints on the brick wall . Seems like there is staining there , you might want to check the roof to wall connection .