Mildew is a specific type of mould that grows flat on surfaces. It typically appears white or grey with a powdery or fluffy texture. Mildew usually stays on the surface of materials and is more commonly found on plants, paper, and fabric. It is generally easier to clean than mould and poses fewer health risks.

Mould is a broader category of fungal growth that penetrates deeper into materials. It can appear black, green, blue, or red, and tends to have a fuzzy or slimy texture. Mould is more destructive, causing structural damage to building materials and posing serious health risks including respiratory issues, allergic reactions, and chronic illness with prolonged exposure.

Mildew stays on the surface while mould penetrates into the material beneath. Mildew is typically white or grey; mould is commonly black, green, or blue. Mildew has a powdery appearance while mould is often fuzzy or slimy. Mould causes more severe structural damage and greater health risks than mildew.

Both mould and mildew can trigger allergic reactions and respiratory irritation, but mould tends to be far more dangerous. Certain mould types produce mycotoxins leading to serious health complications, particularly for children, elderly individuals, and immunocompromised persons. Mildew typically causes milder symptoms such as headaches and coughing.

Mildew can often be cleaned with standard household cleaners and a scrub brush. Mould remediation is more involved - it requires containment to prevent spore spread, antifungal treatment, and often removal of damaged materials. For any mould growth beyond a small surface area, professional remediation is strongly recommended.

If you notice persistent musty odours, discolouration that keeps returning after cleaning, or any signs of mould in hard-to-reach areas like inside walls or under flooring, contact a professional remediation service. Attempting to remove significant mould growth without proper equipment can release spores and worsen the problem. A mould inspection is the right first step.