Deal with damp or mould safely and know when it's bigger

Help me deal with damp or mould.

Where it is: [rooms]
Home: [flat/house, rent/own, roughly how old]
Ventilation: [fans, windows habit]
What I've tried: [list]
Anyone with asthma or breathing issues: [yes/no]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. Safe cleaning steps (and what not to mix).
2. Daily habits to reduce moisture.
3. When it looks like a bigger building problem.
4. If renting: how to report it and where to read Citizens Advice / GOV.UK housing guidance.
5. When to seek medical advice for symptoms.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, diagnoses or legal outcomes. This is help with wording and planning, not legal, medical or counselling advice; point me to GOV.UK, Citizens Advice, NSPCC (0808 800 5000), Childline (0800 1111), Samaritans (116 123) or Refuge/National Domestic Abuse Helpline (0808 2000 247) where that fits, and call 999 if anyone is in immediate danger. UK English.

For GOV.UK or Citizens Advice guidance on damp and mould in the home, use web search and name the page you used. If it doesn't search on its own, open View all tools and choose Search.

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