Consumer group Which? has shared seven simple habits that UK households can adopt to reduce the risk of mould developing at home during winter, when the risk typically increases. The tips aim to keep damp and mould at bay without the need to buy a dehumidifier.
How mould takes hold
Mould becomes an active problem when airborne spores settle on damp surfaces. It then multiplies and spreads, feeding on organic materials such as wood, carpet, and wallpaper paste. In UK homes, problem spots tend to be window sills and cold external-facing walls, which can create severe condensation, as well as high-moisture areas like the kitchen and bathroom.
Left unchecked, damp and mould can rot window frames, ruin wallpaper, and damage plaster, leading to expensive repairs. Inhaling mould spores can also trigger breathing issues, worsen asthma, allergies, skin irritation, and chronic coughing, posing risks to both children and adults.
Simple habits to reduce risk
In a recent Instagram post, a Which? expert advised: "If you notice any condensation, open windows or vents to let the moisture escape. You can even dry the bath and tiles after you shower or take a bath."
With colder, wetter weather, many people dry laundry indoors, which can create pockets of dampness. Experts recommend providing a way for that moisture to escape through an open window. In the kitchen, they suggest putting lids on pans to lock in moisture and using an extractor fan or opening a window while cooking.
Heating and dehumidifier advice
Which? experts also recommend setting central heating correctly to protect the whole house, keeping the temperature consistent to avoid sudden rises and falls that increase condensation. They said: "Try to prevent sudden rises and falls in air temperature as this can increase condensation. Keeping your heating on low and constant will help, as will draft excluders."
Regarding dehumidifiers, Which? experts note they "won't get rid of mould" but can help prevent it by drawing in excess moisture. They advised: "If you're getting one for a warm room then you'll want what's called a refrigerant or compressor dehumidifier. You just need to place it in the centre of your home and keep internal doors open so it draws out all that water from the air. If you want a dehumidifier for a colder space like a garage, you'll need the desiccant type which doesn't require warm air."
