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The UK Mould Protocol
Step-by-Step Mould-Free Living.
The UK Mould Protocol is our guiding framework for tackling mould in any home or indoor environment.
It’s based on science, lived experience, and a simple belief: no one should have to live with mould. This isn’t just a list of tips – it’s a proven, five-step approach to understanding, preventing, treating and controlling mould problems at their root.
Whether you’re a homeowner, a tenant or a property manager, the protocol gives you a roadmap to healthier, safer spaces — without the guesswork.
The 5 Stages of the UK Mould Protocol.
Understand what’s happening — before mould takes hold
The protocol starts with environmental monitoring. Using simple tools like temperature and humidity sensors, you can get a real-time picture of the conditions inside your home. Monitoring helps you: 1. Spot the early warning signs of mould risk; 2. Understand how your home behaves day to day; 3. Catch problems before they become visible or harmful
Understand what’s happening — before mould takes hold
The protocol starts with environmental monitoring. Using simple tools like temperature and humidity sensors, you can get a real-time picture of the conditions inside your home. Monitoring helps you: 1. Spot the early warning signs of mould risk; 2. Understand how your home behaves day to day; 3. Catch problems before they become visible or harmful
Use your data to make simple changes that stop mould growing
Once you understand your home’s patterns, you can start making informed decisions — like ventilating after a shower, managing indoor drying, or adjusting heating habits. This stage is all about addressing behavioural and lifestyle triggers that make a home more mould-prone.
Use your data to make simple changes that stop mould growing
Once you understand your home’s patterns, you can start making informed decisions — like ventilating after a shower, managing indoor drying, or adjusting heating habits. This stage is all about addressing behavioural and lifestyle triggers that make a home more mould-prone.
If mould is already developing, find out what’s driving it — and stop it at the source
When prevention isn’t enough, it’s time to investigate further. This phase is about controlling persistent problems like cold bridging, structural damp, poor air circulation and unvented moisture build-up.
The aim is to limit the conditions that allow mould to grow, not just remove the mould that’s already visible.
If mould is already developing, find out what’s driving it — and stop it at the source
When prevention isn’t enough, it’s time to investigate further. This phase is about controlling persistent problems like cold bridging, structural damp, poor air circulation and unvented moisture build-up.
The aim is to limit the conditions that allow mould to grow, not just remove the mould that’s already visible.
Use targeted treatment methods tailored to your situation
The protocol recognises that every mould problem is different. Treatment might include anti-mould sprays or surface cleansers; improved ventilation systems; structural changes or building repairs.
What matters is that the solution fits the problem — and supports long-term prevention, not just a temporary fix.
Use targeted treatment methods tailored to your situation
The protocol recognises that every mould problem is different. Treatment might include anti-mould sprays or surface cleansers; improved ventilation systems; structural changes or building repairs.
What matters is that the solution fits the problem — and supports long-term prevention, not just a temporary fix.
Bring in help when needed — and then return to step one.
Some mould problems require expert input. This might be a surveyor, a legal advisor or a remediation specialist. The protocol doesn’t end there though — after any treatment, monitoring begins again. Mould management is a cycle. The only way to stay ahead of it is to keep watching, learning and adjusting.
Bring in help when needed — and then return to step one.
Some mould problems require expert input. This might be a surveyor, a legal advisor or a remediation specialist. The protocol doesn’t end there though — after any treatment, monitoring begins again. Mould management is a cycle. The only way to stay ahead of it is to keep watching, learning and adjusting.
Why This Matters?
Mould isn’t just unsightly — it’s a sign that something’s not right in a property.
If mould is left unchallenged, it can impact physical health, mental wellbeing and even cause long-term property damage. The UK Mould Protocol gives people a way to take control — whether you’re tackling a long-term issue or starting fresh in a new place. It underpins everything we do at No To Mould, from the content we write to the products we recommend. If you want a mould-free home, this is where to start.
Want to apply the protocol in your own home?
Explore our Free Resources, including guides, articles, videos and product reviews all designed to help you follow each step of the UK Mould Protocol.