Professional Mould Cleaning Service

Mould is a common problem experienced by many homeowners and landlords. Poor ventilation, high humidity, excessive condensation and water ingress can cause mould to grow rapidly and sporadically if left unchecked. Mould growth is not exclusive to residential properties and can develop in many commercial premises as well.

Rentokil Specialist Hygiene’s Mould Removal Service will thoroughly clean and disinfect all surfaces affected by mould, helping to prevent mould from reappearing. We are proud to provide mould removal solutions for both residential and commercial properties, from homes, offices, schools, healthcare settings, and a wide range of commercial properties. We offer nationwide coverage across the UK, with in-house local teams available to respond quickly to mould issues in both urban and rural areas. Our specialist two-part Mould Removal Service uses a Mould Eliminator to treat and clean away, and a Mould Sanitiser to prevent regrowth.

Get in touch with our experts using the contact form below or chat with us.

The first action for many when cleaning mould is to use a cloth and simply wipe away the mould from the affected area with soap and water. Whilst this can improve appearances and provide a temporary cosmetic fix, it does not address the damage. In some circumstances, mould stains wall surfaces and furnishings, which will then require additional mould removal solutions.

There are many D.I.Y mould cleaning products available to get rid of mould and to stop it from returning, but these solutions often only tackle part of the problem. To prevent mould from developing, a professional solution that combines effective disinfection and sanitisation is advised.

Rentokil Specialist Hygiene provides a fast response and professional mould removal, effectively cleaning and disinfecting all mould growth from your premises. Our tailored professional and expert mould removal solution is a bespoke service available nationwide for both residential and commercial premises.

Not all professional mould treatments are created equal. A simple surface clean often isn't enough to solve the problem for good. With Rentokil Specialist Hygiene, you get a truly thorough and effective treatment from certified experts.

Our professional, multi-stage process is designed to ensure mould is treated safely and effectively, leaving your property clean and protected.

Mould is a microscopic fungus that is often found growing in damp areas of buildings. Mould spores are found everywhere and can spread easily in both outdoor and indoor environments. Black moulds include Aspergillus, Stachybotrus and Cladosporium species and are often conspicuous as black, brown or green patches on surfaces. Black moulds may also produce a musty smell.

Mould can occur when there is excess moisture in premises, whether as a result of a flood or water ingress, or the build-up of moisture over time due to poor ventilation. From mouldy walls and bathroom grout stains to under floorboards and furniture, mould can be present in all areas of your premises under certain conditions.

Mould typically grows in areas with excess moisture, such as from leaks, condensation, or poor ventilation. It thrives on damp surfaces and can quickly spread if left untreated.

Mould has always been a health problem, but from October 2025, that problem was recognised in UK law.

From October 2025, Awaab's Law legally requires social landlords to investigate and fix dangerous damp and mould within specific timeframes. Introduced as part of the Social Housing (Regulation) Act following the tragic death of Awaab Ishak, this law sets clear standards for all registered providers of social housing. Under Awaab’s Law, failing to act is not an option. Landlords must meet strict, legally-enforced timeframes to ensure property safety or face severe legal consequences. If landlords fail to comply, tenants will be empowered to hold them accountable through legal action.

Exposure to mould and mould spores can cause serious health problems, especially when exposure is prolonged. It primarily affects the respiratory system and can cause or worsen conditions such as asthma. In some cases, it can lead to more severe illnesses, including aspergillosis, a fungal infection of the airways and secondary infections such as pneumonia. Because of these significant health risks, the complete and effective eradication of mould is vital.

Whether you have identified mould in your premises or have begun the process of mould remediation, addressing the underlying cause is an essential first step in removing mould and preventing it from returning. Mould growth can occur as a result of damp or a combination of ventilation problems and the build-up of moisture, so making additional changes to the environment will help combat the problem.

Condensation can often be a trigger point for mould growth. When excess moisture becomes trapped, it creates a damp issue, which can start a chain reaction of mould growth. Start by drying surfaces prone to excessive moisture, such as windows and reducing moisture exposure in your premises, whether that is from operational activities or external factors such as water leaks or flooding.

Ventilating your premises will allow air to circulate freely, but over time, blocked or restricted ventilation channels can create a build-up of moisture. Identifying the cause, or removing the source of moisture and ensuring your premises are properly ventilated, can drastically reduce mould growth.

To provide the most comprehensive mould remediation, we can help tackle both the visible mould and the underlying cause. Our process begins with a professional mould clean and disinfection from Rentokil Specialist Hygiene. Then our colleagues at Rentokil Property Care can step in to conduct a detailed survey to diagnose the root cause of the issue, such as rising damp, penetrating damp, or condensation. This two-step approach ensures your mould problem is not only cleaned, but also prevented from returning.

With over 50 years of experience, Rentokil Specialist Hygiene are the UK's trusted experts in removing black mould within commercial and domestic premises:

• 24/7 rapid response across the UK, dispatch within 60 minutes.
• Wholly employed, fully trained operatives with specialist PPE and equipment
• Expert, consultant-led risk assessment on every job
• Specialist Mould cleaning chemicals and equipment
• VIRUSKILLER™ Air Purifiers - proven mould spore destruction and mould odour removal
• Full regulatory compliance and detailed post-clean reporting
• Safe waste disposal through licensed carriers
• Trust us to restore safety, hygiene, and peace of mind

To arrange a Mould Removal treatment, get in touch with Rentokil Specialist Hygiene, no matter what the emergency.

Day or night, you can trust us to get to you to help with any kind of mould removal emergency. Call our friendly team of experts on 0808 159 1403 or contact us here 24/7/365 for a dispatch response within the hour.

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  What are the common signs of mould?

  Mould can be easily identified visually,the most common way to identify mould.

  • Fluffy or slimy patches grow on the wall. Mould can also be powdery and dusty to the touch.
  • The colour can vary, black mould is often the most common but mould can also appear green, white and orange depending on the environment
  • Mould can cause walls and furnishing to stain, causing discolouration on surfaces.
  • Walls can appear bubbling, peeling or cracking near mould

  Mould can often be found in damp and humid environments such as bathrooms, kitchens, basements, near windows, on ceilings or behind furniture that is blocking air flow.

  On top of the visual signs of mould there are other indicators of mould is present 

  Environmental Clues

  • Musty Odours: A persistent, earthy or damp smell can often be a first indication of mould.
  • Condensation: areas prone to condensation such as bathroom and kitchens could lead to mould to develop.
  • Water Leaks: Mould can develop as a result of a leak from a roof, plumbing problems or flooding

  Health Symptoms

  • After prolonged exposure, you can develop respiratory issues or allergic / skin reactions.
  • Persistent coughing or shortness of breath
  • Congestion
  • Itchy, watery or irritated eyes
  • Rashes or skin inflammation

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  I’ve found mould in my home – what should I do next?

  If you have found mould in your property, our advice is not to panic, but don’t ignore it. Mould can spread quickly and affect your health. Getting in touch with a professional mould removal company to assess the extent of the problem and safely remove it before it gets worse. There are a number of DIY methods on the market to treat mould but a professional mould removal service will ensure the problem is dealt with quickly and efficiently.

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  How quickly should I get mould problem looked at?

  The short answer to how quickly you should act is - immediately. A mould problem should be addressed quickly and investigated thoroughly. The ideal window should be within 24 to 48 hours of discovering it. Mould will have already started to germinate and can rapidly spread through airspores. Delaying treatment can impact the air quality and after long term exposure could lead to health risks.

  For social housing tenants: Under the introduction of Awaab’s Law, that holds landlords accountable for tackling damp and mould quickly and consistently. Landlords have to investigate damp and mould complaints within 10 working days and once a hazard has been identified they are legally required to repair or treat it within five working days, within 24 hours if the problem has been identified as an emergency situation.

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  Does having the heating on help with mould?

  Yes, warm air can hold more moisture than cold air, reducing the likelihood of water vapour settling on cold surfaces such as window frames and walls that allows mould to form. By maintaining a consistent low-level temperature and continuous air flow this helps prevent mould developing.

  However if you have already spotted black mould spots or a musty smell, heating will not fix this. At this point you need to remove mould.

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  What is the difference between mould and black mould?

  We treat all mould as a serious health risk but black mould often signals a specific, more stubborn set of challenges. Moulds is a general term for many types of fungi that can appear, such as white, green and even orange.

  When people talk about black mould, they are often talking about Stachybotrys Chartarum, this mould appears dark green or black and has a distinct slimy or wet texture when actively growing. It is often regarded as hazardous as it produces a mycotoxin that can cause respiratory irritations caused by mould spores.

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  How to get rid of mould smell

  A musty, earthy smell in your home usually means there is active mould growth in your property. That musty smell is caused by mould spores in the air. As part of our mould removal process, we include air purification to eliminate unpleasant odours and improve indoor air quality, making your space feel fresh again.

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  Can I clean mould myself or do I need a professional mould removal service

  While small patches may be manageable, professional mould removal is recommended for larger or persistent issues to ensure safe, thorough treatment and to prevent recurrence. Rentokil Specialist Hygiene uses industry-approved methods and PPE to deal with mould safely

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  How is professional mould removal different from DIY cleaning?

  The difference between a DIY mould cleaning to professional mould removal is the difference in hiding or addressing the visual threat of a problem and solving it. While a DIY approach might improve the appearance of a wall temporality, it does not go deep enough in addressing the underlying cause or root of the problem. A DIY approach usually involves scrubbing the visible growth with bleach or household cleaners but only tackling the visible spots on the surface whilst a professional service penetrates through to neutralise the source.

  A challenge for DIY cleaning is the risk of cross contamination. Scrubbing or disturbing dry mould releases microscopic spores into the air. Without professional containment, these spores can travel, spreading the infestation to other parts of the property.

  Whilst DIY treats the visible signs, it never tackles 1, the cause of the problem and 2, prevents it from occurring again in the future. Before a professional service is carried out, a detailed assessment should be carried out to determine the cause of the problem whether its water ingress or poor ventilation so steps can be taken to address the underlying problem and prevent mould returning.

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  What is the best way to remove mould?

  The best way to remove mould is to address both the visible growth with professional cleaning and disinfection solution and address the cause of mould to remove it permanently.

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  How to prevent mould from returning

  To avoid mould returning and to permanently get rid of mould you should

  • Reduce Humidity - maintaining a continuous indoor humidity below 60% and using dehumidifiers in prone to damp areas such as basements, kitchens, bedrooms.
  • Improve ventilation - use exhaust or ventilation fans wherever possible such as in bathrooms and kitchens
  • Addressing leaks - repair water leaks immediately to avoid water ingress and damp.
    
    

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  Is the mould in my home dangerous?

  It is natural to feel concerned when you find mould in your property, but it is important to approach the situation with a calm, informed perspective. While not every instance of mould is an immediate emergency, it is a biological hazard that should be managed professionally to ensure a healthy environment. By acting early and using a professional method, you can resolve your mould problem effectively without it becoming a major cause of concern.

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  Why does mould keep coming back, even after I clean it?

  Household cleaning products might remove the visible mould, but not the underlying moisture problem. If the cause, like condensation, a leak, or poor ventilation, isn’t fixed, mould is likely to return. Our specialists find and treat the root cause to stop recurrence.

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  Can mould affect my health?

  Yes, mould can trigger allergic reactions, respiratory problems, and worsen conditions like asthma. It's especially risky for children, the elderly, and individuals with weakened immune systems.

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  Is mould making me or my family sick?

  It’s possible. Mould exposure can cause coughing, sneezing, skin irritation, and even breathing problems, especially for people with allergies or asthma. If you’re noticing health issues alongside visible mould, it’s best to have your property inspected.