Black Mold or Mildew???

[Joey Hampton]

I was going to finish caulking a bathroom that wasn’t caulked correctly, and so I was cleaning along the edges of the plastic insert of the shower, and noticed chunks of black stuff kept falling. So I started pulling the old caulk away and noticed it had all this stuff behind the caulk. I was worried it may have spread up behind the back of the plastic insert, along the wall?? 

[Rob Gillespie]

@Joey Hampton Black mold is a term that is over used in my opinion. 

I am not an expert, and of course consult someone that specializes in this. ( my don't sue me disclosure, LOL)

I see the word "Black Mold" overused so often in this business. There are several types of mold and not all of them are black mold.  Mold needs to feed on cellulose which is paper or wood. so it would not feed on caulk or a fiberglass tub insert. 

My belief is that is mildue and can be cleaned up pretty easily. 

When doing a rehab, I live by the motto. "When in doubt, rip it out". 

Hope that helps a bit. Good luck!