I have black mould in 2 bedrooms in my house. Neither room is humid or damp….. is this something a professional should look at?
There are always mold spores in the air. The quantity varies depending on the time of year and location. But that does not mean you have to have mold.
The reason someone should look at it is that mold only grows where there is excess moisture or humidity. If you can not see where the water is, a professional will be able to find it. You could have a leaky pipe behind the walls, or a leak in your roof, or condensation from your air conditioning unit or humidity from your bathroom or laundry area.
If you are lucky, the leak has already been repaired, and all you will need to do is the clean-up. But you really won’t know your best course of action without a professional assessment that determines the water source that originally fed the mold. Otherwise, even if you clean up, the moisture and the mold will be back.