The presence of mould does not always means that health problems will occur. However, for some people the inhalation of the mould, fragments of the moulds, or spores can lead to health problems or make certain health conditions worse. Mycotoxins are metabolites or by-products from the moulds that have been identified as being toxic to humans. These toxins can slowly wear down the immune system and can lead to allergic or respiratory problems. People who are immuno-suppressed, or recovering from surgery are usually more susceptible to health problems from moulds.
Moulds can grow almost everywhere and on any substance providing moisture is present.
Thus, the best method of prevention is to reduce the amount of moisture. Insulate cold surfaces to prevent condensation on piping, windows, exterior walls, roofs and floors where possible. See below for more information on cleaning, etc. For floors and carpets, remove spots or stains immediately. Reduce the amount of water used when cleaning carpets as much as possible.