Top Tips for Damp and Mould this Autumn

As the days grow shorter and the weather turns colder, many UK households start to see the familiar signs of damp and mould. The drop in temperature encourages condensation, while heavy rainfall can expose leaks and weak spots in your home. Left unchecked, damp and mould doesn’t just damage your property, it can also have an impact on your health too.

According to the English Housing Survey, over a million households in England are living with damp problems, and these issues can contribute to poor indoor air quality and health impacts such as respiratory conditions.

Here are some practical steps you can take this autumn to keep your home fresh, dry, and mould-free.

Quick Summary: Reducing Damp and Mould at Home

• Damp and mould are often caused by excess moisture and poor ventilation
• Condensation forms when warm air meets cold surfaces
• Regular ventilation and steady heating help reduce risk
• Daily habits such as cooking and drying clothes affect humidity
• Early action prevents mould from spreading
• Monitoring temperature and humidity helps identify problems sooner

Keep Your Home Ventilated

Ventilation is your first line of defence. Even during the colder months, it’s important to let fresh air circulate:

• Open windows for at least 10 minutes a day, especially in bathrooms and kitchens.
• Use extractor fans when cooking, showering, or drying clothes indoors.
• Make sure vents aren’t blocked.

Manage Heat and Humidity

Condensation forms when warm air hits cold surfaces. To reduce the risk:

• Keep your home at a steady, consistent temperature, avoiding drastic changes.
• Use your heating wisely, warming the whole house while maintaining a steady temperature.
• Check your insulation to prevent cold spots where damp can settle.

Control Everyday Moisture

Daily habits make a big difference:

• Dry clothes outside when possible or use a vented tumble dryer.
• If you must dry clothes indoors, place them in a well-ventilated room with the door shut, or use a dehumidifier.
• Put lids on pans when cooking to reduce steam.

Stay on Top of Condensation and Mould

Small steps can prevent a small problem becoming a big one:

• Wipe down condensation from windows and sills each morning.
• Tackle early signs of mould straight away with an anti-mould spray or diluted bleach (always wear gloves and ensure you have good ventilation).
• Avoid overcrowding rooms with furniture, so air can circulate freely.

Inspect and Maintain Your Home

Autumn weather often highlights maintenance issues:

• Clear gutters and downpipes to prevent overflowing water from seeping into walls.
• Check your roof for slipped tiles.
• Inspect walls for damaged render or pointing that might allow water to get in.
• Look behind wardrobes and in corners for hidden patches of mould.

Managing Damp and Mould in Rented Homes

In rented properties, damp and mould can affect both building condition and resident wellbeing. If you’re a tenant, you should report early signs of damp or mould as soon as they appear, while landlords are responsible for addressing underlying causes such as leaks, inadequate ventilation, or building defects.

Early intervention helps prevent more serious issues and supports healthier living conditions for occupants of rented properties. Remember, landlords have a duty to address the underlying causes of damp and mould, not just treat visible symptoms.

How to Manage Damp and Mould

Alongside good habits and regular maintenance, technology can also play a powerful role in tackling damp and mould. The Gateway is designed to give you visibility of conditions in your home by collecting data from the Connected Environmental Sensors.

By monitoring key factors such as temperature, humidity and carbon dioxide levels, the Gateway provides real-time insights into the environment around you. While carbon dioxide doesn’t cause damp or mould, consistently high CO₂ levels can indicate poor ventilation, which often coincides with increased humidity and condensation risk. That’s why installing reliable carbon dioxide alarms is so important (as is siting fire, heat, and CO alarms in the right place).

This means you can spot the conditions that encourage damp and mould before they become a visible problem. For example, if humidity levels are consistently high in a particular room, the Gateway will highlight it, allowing you to take action, whether that’s increasing ventilation, adjusting heating, or using a dehumidifier. The data it provides helps you to understand patterns in your home and offers time to implement small changes that can prevent bigger issues.

For landlords and housing providers, the Gateway also offers an invaluable overview across multiple properties. It helps to identify where damp and mould risks are emerging, so that preventative steps can be taken early on, reducing costly repairs and improving residents’ wellbeing.

👉See more about Aico’s Connected Home Solution

Damp and mould FAQs

What causes mould to form in homes?

Mould forms when excess moisture builds up indoors and is unable to dry out properly. This is usually due to condensation caused by warm air coming into contact with colder surfaces like windows, external walls, and ceilings. Other factors can include drying clothes indoors, inadequate heating, blocked vents, leaks, or water ingress from damaged roofs, walls, or plumbing.

Does opening windows in winter help reduce damp?

Yes. Short periods of ventilation help remove moist air without significantly cooling the home, especially after cooking or showering.

Is mould a health risk?

Mould can affect health, particularly for people with asthma, allergies, or other respiratory conditions. Exposure to mould spores may cause coughing, wheezing, shortness of breath, eye irritation, and skin reactions. Children, older adults, and those with weakened immune systems may be more sensitive. Reducing moisture levels, improving ventilation, and dealing with mould promptly helps limit these risks and supports a healthier indoor environment.

How can I tell if my home has poor ventilation?

Common signs of poor ventilation include persistent condensation on windows or walls, especially in the mornings, a musty or stale smell, and rooms that feel damp or heavy. 

You may also notice mould forming in corners, behind furniture, or around window frames. Lots of window misting, or slow drying times for clothes indoors can also indicate that moist air is not being effectively removed from the home.