What is black Cladosporium mould

Black mould is a type of common fungus also known as “Aspergillus Niger”. This is the same type of mould that grows as black fur on fruits, vegetables and grains. In homes, mould spores land on moist surfaces inside the home and begin to grow.

Another ‘black mould’ common in the UK home environment is Alternaria. This is an umbrella term for hundreds of species’ of fungus that are found almost everywhere on the planet. The Alternaria fungus that causes black mould growth is an allergen and can trigger hay fever or even asthma in rarer case.

Cladosporium is a black mould fungi type that forms dark spider web-shaped stains. Cladosporium spores are omnipresent in the outside environment, and it is very common for them to find a moist place to grow indoors.

Another type of UK black mould is Stachybotrys chartarum, although this fungi is rarer and could present a more severe problem. Sometimes known as ‘toxic black mould’, Stachybotrys chartarum loves building materials like wallpaper, gypsum and fibreboard. It thrives on damp walls of all types. Although scientifically disputed, this type of mould has been linked to the controversial ‘sick building syndrome’.

Mould caused by dampness is often found in areas of high humidity, like bathrooms and kitchens, these rooms are more susceptible due to the steam generated through cooking and washing. However, it can appear in any room in the house and is closely associated with rising damp and penetrating damp.

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