Your home should feel safe.
Take damp seriously.

Mould is a building problem that can also affect health. The effects vary between people; clear information is more useful than judging risk by the colour of a patch.

What mould exposure can do

The CDC explains that exposure may cause a blocked nose, sore throat, coughing or wheezing, burning eyes or skin irritation, while some people experience no symptoms. Mould can aggravate asthma and trigger allergic responses in susceptible people.

Who needs particular care

People with asthma, allergies, weakened immunity or chronic lung disease may need additional precautions. Children and other vulnerable occupants deserve particular consideration when planning access to a damp or affected room. Ask a healthcare professional about symptoms or personal risk.

Dark growth does not identify the species

Black, green or brown colour cannot tell you which mould is present or establish a precise health risk. Visible mould of any colour and persistent moisture need attention. Routine testing is not necessary for every visible problem.

What to do about the building

Avoid disturbing suspect material by scraping, sanding or dry brushing. Investigate the source of moisture, arrange removal suited to the materials and make any necessary repairs. Painting over an active problem does not solve it.

Water damage calls for prompt action

EPA guidance recommends drying water-damaged materials within 24–48 hours where possible to reduce mould growth. Treat unsafe electrical conditions, contaminated water and structural hazards as separate issues requiring appropriate specialist attention.

Discuss an inspection or explore professional mould removal.

This is general information, not individual medical advice. A contractor cannot diagnose illness or determine personal exposure risk from a photograph.