black mold

I had always heard black mold was toxic. I looked it up on some government health websites and actually they have no clear evidence linking black mold to any health issues. They just warn that it could pose an affect to people who may already have respiratory issues. They just said be cautious. I do not know much about it just from what I read. It might be bad and it might not, but I do not really want to chance my family's health. Also if I want to sell it would be hard if not impossible to do with signs of mold. Thanks for everyone's advice. Lowell I will probably do the cement board, bigger vent, and tile.

Having been in the construction trades for 16 years before I got behind the wheel I dealt with some of the mold issue you speak of. Several remodels had unattended plumbing and roofing issues that were bad by the time we were contracted in to do the repairs. At the time I was doing it we used greenboard in anyplace with moisture issues and advised for green behind any ceramic tile. We used a solution that was premade before coming to the job thereby keeping the customer in the dark of it's contents. They were simple as stated, mostly bleach and detergent, and ammonia after the fact ( well after bleach solution was dry, they react badly together when wet) for the cleaner smell it left behind and to satisfy the nose of the customer. Here in FL humidity is always high and once it gets a foothold is pretty prolific. I have always been accused of overbuilding and such so on the few jobs I did on my own I always removed anything showing black and replaced it, and used nothing but green board in the bathrooms and high moisture areas. Standard in Florida codes was green on the bottom sheet and regular board above that but having replaced enough of it I go beyond code. Contractors frequently used flat wall paint throughout the house and white board above a shower and flat paint is basically a sponge with a finite life. Go for the overkill if you are going to stay in the house and listen to all you can to make sure your bases are covered or you may revisit this yet again. Good luck with it all and keep us posted of the outcome........Skeet.

again a couple hundred pounds of deliberate "3X" overkill now is worth several literal TONS of moldy material removing a cheaply and poorly `fixed` project and then having to RE-do (or even worse RE-RE-doing) it correctly later. AND it cuts into your available fishing time...

Where the mold is coming back that fast I would say beings this is an older home that the owner probably put the ceiling fan in himself and didn't vent it out and the insulation above the ceiling is saturated and trapping the moister on the drywall. EB

I second the greenboard. DP

If you are going to tile the bathroom than I would use a cement board made for putting tile on. EB