What Is Mould?
Mould is the name given to a large variety of fungal growths that require moisture and organic matter to feed upon. No one knows how many species of fungi exist but estimates range from tens of thousands to perhaps three hundred thousand or more. The most common varieties found inside our homes include: Alternaria, Aspergillus, Cladosporium, Epicoccum, Penicillium and Rhodotorula. High relative humidity is required for germination and growth while lower humidity tends to increase the release of mould spores as a method for self preservation.