How Does Black Mould happen?

Condensation forms on the surfaces in a dwelling and creates a damp environment where the relative humidity in the room is above 60%. This creates the perfect environment for mould to grow. Mould spores are then release into the air in the room, and health issues will arise from breathing in these mould spores. 

Common causes of mould include lack of ventilation in bedroom, inconsistent use of extractor fans in the kitchen and bathrooms, drying clothes indoors and other lifestyle elements.