Mould Advice Centre

Heating Low and Constant, or On When Needed? What It Does to Condensation
Leaving the heating on low all day is either the great energy myth or the fix for a damp wall, depending on who you ask. The answer depends on what your walls are made of, and it is worth understanding why. Read more...
Reopening a Home That Stood Empty: Student Lets and Summer Voids
A house shut up since June can look fine and still be quietly growing mould. Here is what happens inside an empty property over summer, what to check on the first day back, and where the landlord's duty sits. Read more...
Mould Spores and Your Lungs: Who Is Most at Risk in a Damp Home
Damp and mould mainly affect the airways and lungs, and two people in the same flat can be exposed very differently. Here is what UK health guidance actually says, who is most at risk, and what reduces exposure in a real home. Read more...
PIV, Extractor Fans and Trickle Vents: Which Ventilation Actually Fixes Condensation
A PIV unit, an extractor fan and a trickle vent do three different jobs, and most condensation problems need more than one of them. What each one actually fixes, what it costs, and what none of them will touch. Read more...
Black Mould on Silicone Sealant and Grout: What Actually Works
Bleach takes the colour out of bathroom mould without removing it, which is why it returns within weeks. What actually clears silicone and grout, and when the bead needs cutting out instead. Read more...
Drying Washing Indoors Without Feeding the Mould
Indoor drying adds 10 to 15 litres of water a week to the air in a typical home. Here is where that moisture ends up, and how to keep drying clothes indoors without growing mould on the walls. Read more...
Spore Stopper
Getting your home ready for autumn and winter mould season
Mould problems are made in September but noticed in January. The practical jobs to do now, before the first cold, damp nights arrive. Read more...
Spore Stopper
What a wet autumn and winter means for mould in your home
Wet seasons change how a house behaves. Why a wet autumn and winter raises indoor mould risk, and what to do before problems appear. Read more...
Driveway Cleaner
Autumn outdoor jobs: gutters, render, paving and fences
Most winter damp problems start outside. The autumn checklist for gutters, roofs, render and paving, and what each one protects indoors. Read more...
Spore Stopper
How to stop condensation on windows, sills and frames
Water on the inside of the glass is an early warning of a mould problem. What causes it and the practical steps that reduce it. Read more...
Spore Stopper
Mould foggers explained: what Spore Stopper does and when to use one
A fogger treats the whole room rather than a surface. What Spore Stopper does, where it fits in a treatment, and when you need more than one can. Read more...
Damp & Stain Block
Renting with damp and mould: how to report it and what to do meanwhile
A practical guide for tenants dealing with damp and mould, covering how to report it properly, what to record, and what you can reasonably do in the meantime. Read more...
Spore Stopper
Do dehumidifiers stop mould?
A dehumidifier reduces the moisture mould needs, but it is not a treatment. Here is where it helps and where it will not fix the problem. Read more...
Response Boxes
Mould in lofts and roof spaces
Black mould on loft timbers is usually a ventilation problem, not a leak. The causes, the checks to make, and what to do about it. Read more...
Response Boxes
Mould after a leak or flood: drying out before treating
After water damage, drying properly matters more than cleaning quickly. This guide explains the right order, how long drying takes, and when to bring in help. Read more...
Anti-Mould Sprays
Mould on fabric, curtains and mattresses
Surface treatments are made for walls, not soft furnishings. What can be saved, what cannot, and how to stop it happening again. Read more...
Anti-Mould Sprays
Safety when removing mould: masks, gloves and ventilation
Treating mould disturbs it. The protective equipment, ventilation and working method that make a mould treatment job safer. Read more...
Spore Stopper
Why a room smells musty and how to clear it
A musty smell usually means moisture somewhere, even when nothing is visible. Where to look and how to clear the smell properly. Read more...
Anti-Mould Sprays
Mould in the kitchen: cooking moisture, extractors and cupboards
Kitchens produce a lot of moisture and hide it well. Where kitchen mould appears, how to treat it safely, and how to stop it returning. Read more...
Anti-Mould Sprays
Mould behind wardrobes, sofas and on cold external walls
Hidden mould behind furniture on outside walls is a classic cold-spot problem. This guide explains why it happens there and how to treat and prevent it. Read more...
Paints
Anti-mould paint vs ordinary paint: what is the difference?
What anti-mould paint is designed to do, how it differs from standard emulsion, and where it fits in a proper treatment sequence rather than as a shortcut. Read more...
Anti-Mould Sprays
Does bleach kill mould on walls?
Bleach is the first thing many people reach for. Here is what it actually does on a painted wall, and why the patch usually comes back. Read more...
Spore Stopper
Room-by-room mould prevention checklist
A simple room-by-room checklist for reducing mould risk in bathrooms, bedrooms, kitchens and other common problem areas. Read more...
Paints
Mould treatment checklist before painting
A pre-paint checklist for rooms affected by mould, condensation, stains or damp marks, so decorating happens in the right order. Read more...
Anti-Mould Sprays
Free mould removal guide
A practical starter guide to removing visible mould safely, choosing the right treatment route, and knowing when to move beyond a basic clean. Read more...
Response Boxes
Landlord and property manager mould treatment checklist
A practical checklist for landlords and property managers dealing with visible mould, recurring condensation and treatment decisions in occupied homes. Read more...
Spore Stopper
How to stop mould returning after winter
Winter often exposes condensation and cold-surface mould problems. This guide explains how to reduce repeat patches before the next cold season. Read more...
Paints
Can you paint over mould?
Painting over mould might hide the patch for a while, but it rarely solves the cause. Here is the safer treatment order to follow instead. Read more...
Damp & Stain Block
When surface treatment is not enough and you need professional investigation
Surface treatment can help with many mould problems, but some situations point to a wider building issue that needs investigating. Read more...
Spore Stopper
Condensation mould in bedrooms and bathrooms
Why condensation mould is so common in bedrooms and bathrooms, what makes it return, and how to think about treatment and prevention together. Read more...
Damp & Stain Block
Mould vs damp: what is causing the problem?
Mould and damp are connected, but they are not the same thing. This guide explains the difference and what each one might be telling you about the room. Read more...
Driveway Cleaner
Patio and driveway cleaner guide: when to use exterior treatment
When exterior treatment is the right choice for patios, paving and driveways, and how it differs from indoor mould cleaning. Read more...
Damp & Stain Block
How to treat damp marks and water stains before decorating
A practical guide to dealing with damp marks and water stains before decorating, including when to block, when to wait, and when to investigate further. Read more...
Response Boxes
Mould treatment kits explained: which one should I choose?
A simple guide to choosing between mould treatment kits and deciding when a full remove, treat and protect route makes more sense than a single product. Read more...
Anti-Mould Sprays
Bathroom mould treatment for grout, silicone and washable surfaces
How to approach bathroom mould on grout lines, silicone seals and other washable surfaces, with practical treatment and prevention steps. Read more...
Spore Stopper
Why mould keeps coming back after cleaning
If mould returns after you clean it, the usual reason is that moisture is still present. This guide explains the most common causes and what to do next. Read more...
Paints
What to use before anti-mould paint
What should happen before anti-mould paint goes on a wall, including cleaning, preparation, drying and choosing the right treatment stage. Read more...
Anti-Mould Sprays
How to remove mould from painted walls and ceilings
A step-by-step guide to cleaning visible mould from painted walls and ceilings, treating the area properly, and reducing the chance of it returning. Read more...