Veddy interesting. Let me ask you what kind of mold might grow on ceiling tiles of a doublewide, at the center beam.  Roof replaced and no sign of mold in attic when roof opened up?

Without testing it is difficult to say.  It sounds like it may be related to the HVAC system.  Is there a register close by?

Hopefully you saw my earlier response.  I was asking if there was a register close by for the HVAC system?

Thank you for the information.  Working with mold in a real estate transaction is very difficult. I had to in one instance and it worked itself out but was tricky.  The seller of course thought it was not a problem and I had to keep convincing them it was. Thanks.

You're welcome Vincent.  At HABITEC Home and Building Inspections, LLC, we have worked with mold issues in numerous real estate transactions, as well as with homeowners who find a situation in their house that they think is suspicious.  We have found that most homeowners are not aware of the depth of the issue or the significance.  Ours is as much a process of education as it is solution.  The homeowners are usually relieved when HABITEC can lay out a path of resolution so they can get beyond the mold issue.  Knowing how to evaluate for mold following established protocol is key to a successful start to the process.  We do not offer mold mitigation as we feel to do both is a conflict of interest.  If a mold mitigation company comes in to test for mold, declares mold to be present, then lays out an expensive mitigation, there is too much opportunity for misrepresentation of the facts.  HABITEC recommends that one company should evaluate for mold, another should mitigate, if required.  Good luck going forward!