of mould in wet areas such as bathrooms and laundry is the end
result primarily of two things, water and heat, along with a
lack of appropriate air movement referred to as ventilation.
itself is a product of air borne yeast and fungi spores ever
present in the atmosphere.
of mould, black spot, moss on bathroom walls and ceiling is
an indication of moisture retention within building materials
within a warm environment which in turn allows the mould and
fungi bacteria to multiply.
may well be the end result of water precipitation unable to
be removed by an adequate air flow or some manner of water ingress
into the building materials
the grouting of bathroom tiles is probably the best example
of this phenomena, and the fact that cleaning agents are employed
to momentarily kill off the mould and fungi bacteria.
the most effective form of ventilation to a wet area, an exhaust
fan should be employed and is best placed over the shower area.
A means of fixed ingress should be provided especially when
the door is closed.
between using outdoor ambient as a means of volume replacement
medium, in the ventilation cycle as opposed to using internal
volume, is that outdoor ambient air will always be fresh oxygen