I have had some past moisture seepage from upstairs bathrooms into the sub floor. The leaks have been fixed long time ago bu the previous owner, but due to the presumably long term exposure in the past, some small areas of the sub floor (plywood) have turned black. This is mostly in the spots like around pipe holes where the water was seeping through the sub flooring. Is it possible that some of this black damaged (slightly rotten??)wood is also moldy? There are no lighter gray areas that I have previously learned to associate with mold. What is the right thing to do about this type of moisture damage? I can see it from the underside, but if I need to replace the damaged spots in the sub flooring I will have to tear open floor in the bathroom.
I may be putting my house on the market in a few months, so I need to know what level of repair I need to do to avoid potential lawsuits. I expect that I need to remove all the material that I know is moldy, but should I also replace all the sub floor that has turned color due to the moisture.
Appreciate any constructive input.
Pietu