Why Black Mould Surges in Winter And How to Stop It

When the weather turns colder, many UK homes start to notice the same problem, condensation in your home. Failure to reduce condensation can bring humid air and with it damp and mould. Black mould creeps across bedroom, bathroom and kitchen walls. It causes water damage and is a major contributor to allergic reactions and health problems in your home.

Winter is the perfect storm for condensation and mould. Homes are warmer inside, colder outside, and windows stay closed. The result is damp, stale air that has nowhere to escape. Prevent condensation, reduce humidity levels and help your immune system this Winter with a Positive Input Ventilation System. 

Why Cold Weather Makes Mould Worse

Black mould grows where there is moisture. In winter, three things happen that make conditions ideal for this process to start and infiltrate your property.

1. Cold surfaces 

Walls, ceilings, and double glazing windows are much colder. When warm indoor air touches these colder surfaces, water droplets form. Which then results in condensation appearing across the interior of the property.

2. Closed windows

We all naturally shut windows when the colder weather starts to keep the heat inside the property. The knock on effect of this is that it retains the moisture in your property and prevents it from leaving.

3. Everyday living 

Every day living includes cooking, showers, drying clothes indoors, even breathing. All of these factors add more water into the air of your property. Coupled with the above, it contributes towards condensation.

Over the coming weeks as temperatures drop and the Autumn sun turns to Winter wind. All of this trapped moisture creates condensation. This dampness feeds mould spores into the air and the interior of your property. This results in black mould and unhealthy indoor air quality. 

The Damage Mould Can Cause

Black mould is more than just an eyesore. It can lead to a number of serious problems. Black mould can cause damage to walls, ceilings, and plaster within your property. 

Peeling wallpaper and bubbling paint can often be attributed to increased moisture in the property. Which can lead to strong, musty smells, which can be very unpleasant.

The damage from poor air quality and increased moisture is not just limited to the property. It can also cause respiratory problems and asthma flare-ups. All of which can cause health risks for children, the elderly, and anyone with allergies.

Once mould takes hold, it keeps coming back unless you deal with the root cause, poor ventilation within your property. 

How to Stop Mould in Winter

You can wipe mould away or repaint, but it won’t last. The only way to stop it for good is to reduce moisture and improve airflow inside your home or place of work.

This is where a Positive Input Ventilation (PIV) system from ClearAIR PIV can make the difference.

A PIV system works all year round. It gently pushes out damp, stale air and replaces it with clean, filtered air. This constant flow reduces humidity, which means condensation can’t form on your walls or windows. The result is a reduction in moisture, which means no more condensation, no more damp and no more black mould. 

With a PIV installed, you don’t need to rely on opening windows in freezing weather. You get fresh, healthy air without losing heat. A PIV system is better for your property and the people living within it. 

Why Choose ClearAIR PIV For Your Condensation Treatment

The ClearAIR PIV team has over 10 years’ experience in ventilation and damp control. Each member of our electrical installation team is fully NAPIT-accredited. With all of the work we undertake coming fully insured and complete with an EIC certification.

All of the PIV unit products that we install come complete with a manufacturer’s warranty. But most importantly you get all of the above starting from a fixed all included price of just £845.

We help homeowners, landlords, and housing providers stop condensation and prevent mould. Our highly professional team operates across Derbyshire, South Yorkshire, Nottinghamshire, and the Peak District.

FAQs – Winter Mould and PIV

Why is black mould worse in winter?
Because homes are warmer inside, colder outside, and windows stay shut. This causes more condensation, which mould spores feeds on. 

Will cleaning mould stop it?
Not permanently. Wiping or painting over mould only covers the problem. It will return unless you fix the ventilation issues within your property.

How does a PIV stop mould?
A PIV reduces indoor humidity by replacing damp air with fresh, filtered air. Without excess moisture in your property, mould simply cannot grow. 

Is a PIV expensive to run?
No. PIV systems are energy-efficient and cost just a few pence a day to run. They are more energy efficient than opening a window and losing precious heat. 

Will a PIV keep working in the cold months?
Yes. It runs quietly all year, keeping the air dry and healthy even in the middle of winter. A PIV unit is the best way to keep fresh, clean air inside your home. 

Black mould thrives in winter because condensation makes your home the perfect breeding ground. Don’t wait for damp patches to spread or your health to suffer. A PIV system from Clear Air PIV gives you clean, fresh air and keeps mould away for good.

How can ClearAIR PIV Help You?

Black mould thrives in winter because condensation makes your home the perfect breeding ground. Don’t wait for damp patches to spread or your health to suffer. 

A PIV system from ClearAIR PIV gives you clean, fresh air and keeps mould away for good. Speak to a member of our team. Or simply take our free air assessment questionnaire to see if you can benefit from a PIV unit from ClearAIR PIV.