What is Mould?

Mould is the common word for any fungus that grows on food or damp building materials. It often looks like a stain and comes in a variety of colours. In some cases, however, mould may not be visible but may have a musty odour. If it is allowed to grow, mould can contribute to poor indoor air quality.

Mould can grow in damp or wet areas in your home caused by water leaks, flooding, or high humidity that can result from everyday activities like cooking or showering. It can grow on wood, paper, fabrics, drywall and insulation. It can hide inside walls or above ceiling tiles. When mould finds a damp place to grow, it can contribute to poor indoor air quality and health problems.