How To Keep Your Office Warm Without Mould Problems

When the cold sets in, offices turn the heating up and close the windows. That keeps people warm, but it can also trap moisture. Moisture on cold windows and walls is how mould starts. The good news is you can keep a comfortable office without a mould problem.

Why heating can lead to mould

Warm air holds more moisture than cold air. People breathe out water vapour, kettles and dishwashers add more, and drying wet coats adds even more. When that warm, damp air touches a cold window or wall, it turns into water droplets. This is condensation. Over time, damp surfaces grow mould. Our article on what causes condensation on windows explains this in more detail, and why damp gets worse in autumn shows why this is the time of year to act.

How warm should an office be?

HSE guidance says the temperature in an office should be at least 16°C for mostly seated work. Many offices aim for around 19 to 21°C. There is no single perfect figure. What matters is that staff are comfortable and the air does not become too damp.

Seven ways to stay warm and mould-free

1. Keep the heat steady. Constant, low heat is better than short bursts. Cold surfaces are what attract condensation.
2. Let air move. Open windows or vents for a few minutes each day. Use extractor fans in kitchens and toilets.
3. Keep humidity in range. Aim for 40% to 60%. A cheap humidity meter will tell you. If it stays above 60%, mould is more likely.
4. Use a dehumidifier. Place one in problem rooms, such as stores, basements and meeting rooms that are rarely used.
5. Do not block radiators or vents. Furniture and boxes stop warm air moving and leave cold, damp spots behind.
6. Deal with wet items. Do not dry coats and umbrellas on radiators in the main office. Give them a space with good airflow.
7. Fix leaks fast. A small drip from a pipe, roof or window can lead to a big mould patch.

Signs mould is starting

Check these places each week:

• window frames and sills
• corners of outside walls
• behind cabinets and filing units
• storage rooms and basements
• around kitchens and toilets
• ceilings under roofs and flat roofs

Look for dark spots, a musty smell, peeling paint, or damp patches. Staff may also report sneezing, coughs or itchy eyes that get better when they leave the building.

Why it matters for your business

Mould can affect health, especially for people with asthma or allergies. It damages ceilings, carpets and furniture, and it can lead to more sick days. Landlords and tenants both have duties to keep a workplace safe, so it is better to act early.

If you are not sure what is going on, air quality testing can show what is in the air. Our guide on what is air quality testing and why does your business need it? explains how it works.

When to call us

If mould keeps coming back, covers a large area, or you do not know where the damp is coming from, call a specialist. Our team offers office and workplace mould removal and damp and moisture surveys to find the cause. After the mould is gone, our office cleaning team can keep your space fresh and healthy.

Need help with mould at work?

ICE Cleaning works across the UK, day and night, 365 days a year. Call us on 0208 066 0360 or email contactus@icecleaning.co.uk to book an assessment.