Mould Prevention: Why Tenants and Landlords Need to Work Together

Despite greater awareness and tougher legislative measures, mould can still be a significant issue for landlords and tenants.

A new survey has found that 43% of tenants have experienced problems with mould and damp in their rental.* And cases appear to be becoming more – not less – prevalent.

Experts attribute this to changing weather patterns (sadly, we're getting more rain than ever in the UK).** High energy prices don't help either, as cash-conscious tenants are now more frugal when heating their homes. (Keeping a property at a moderate, consistent temperature helps prevent mould.)

Why Does It Matter?

Mould isn't just an unsightly, foul-smelling inconvenience; it can cause lung problems and eye and skin conditions. Long-term exposure can lead to severe illness and, in extreme cases, be fatal.

Mould and damp can also cause ugly stains and structural damage to a property.

Who Is Responsible – the Tenant or Landlord?

This is a frequently asked, much-debated question. The answer, and we're not just being diplomatic, is both parties. It really does come down to teamwork and communication.

Tenants can play a huge role in preventing mould from occurring and raising the alarm if it does. Landlords must ensure there are no structural issues (leaks, cracks) or maintenance problems (blocked gutters, faulty extractors) contributing to mould growth. They must also act swiftly to remove mould if it's identified.

Helpful Tips

For Tenants

• Tackle condensation: Condensation provides the breeding ground for mould (which is a fungus). Each morning, wipe dry windowsills, bathroom walls and shower screens.


• Open windows: Mould flourishes in poorly ventilated spaces. Open your windows for at least 20 minutes a day to improve ventilation.


• Be vigilant: Bathrooms, kitchens and indoor areas where you dry clothes are high-risk locations for mould. Always use extractor fans and, if you must dry laundry inside, use a dehumidifier, too.

For Landlords

• Maintenance: Stay on top of routine maintenance. Regularly clear out the gutters and ensure extractor fans are working (upgrade them if they're not).


• Inspections: Look out for signs of mould during inspections (remember to check behind the fridge, where mould can fester). Encourage tenants to leave a small gap between furniture and external walls to circulate the air.


• Respond quickly: If mould appears, act promptly. Use specific mould/mildew removal products as they can prevent it from returning. Bin all cloths you use in the cleaning process as they can harbour mould spores.

If you have any more questions about mould prevention and removal, get in touch.

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* Source: Survey conducted by insurance comparison site Quotezone.co.uk. Based on a randomised survey of 1,200 respondents across the UK.

** Source: Met Office, October 2022 to March 2024.

Frequently Asked Questions

1. What causes mould in rental properties?

Mould is often caused by condensation, poor ventilation, or structural issues like leaks or cracks. It can also occur due to a lack of consistent heating.

2. What are tenants' responsibilities regarding mould prevention?

Tenants should manage condensation, ventilate the property regularly, and use extractor fans in high-moisture areas. They should report any signs of mould or dampness to their landlord promptly.

3. What should landlords do to prevent mould?

Landlords should carry out regular maintenance, ensure extractor fans and gutters are functioning properly, and inspect the property for signs of mould during routine visits.

4. Who is responsible for removing mould if it appears?

If mould is caused by structural or maintenance issues, it is the landlord's responsibility to address it. If it results from tenant behaviour (e.g., poor ventilation), the tenant may be required to take action.

5. How can mould affect health?

Exposure to mould can lead to respiratory issues, allergies, and skin irritations. Long-term exposure can result in more serious health conditions, especially for vulnerable individuals.