Black Mould Treatment
Breath Easy With ClearAIR PIV.
Black mould is more than just an eyesore. It’s a warning sign that your home’s ventilation isn’t working as it should.
At Clear Air PIV, we specialise in long-term, low-maintenance solutions. All designed to help eliminate damp, condensation & mould from your home. Using Positive Input Ventilation (PIV), we tackle the root cause of the problem. Not just the symptoms
What Causes Black Mould and Condensation?
Black mould is a symptom of trapped moisture. It’s not the problem itself, but a visible sign that your home has a ventilation issue.
When warm, moist air hits a cold surface like a wall, window, or ceiling. The moisture in the air condenses into water droplets. Over time, this excess moisture soaks into paint, plaster, window frames and even your furniture. If left untreated, that’s when black mould spores start to grow.
The most common causes of condensation and black mould on walls include:
Why Cleaning Isn't Enough!
You can clean black mould with sprays or bleach. But it will always come back if the underlying cause isn’t fixed. It’s not just about removing what you can see. It’s about removing the moisture and controlling humidity levels in your property. There are many health risks resulting from poor air quality in your home. It can result in allergic reactions, skin rash or damage to the immune system.
That’s where a PIV system comes in. It changes the airflow in your home. Reducing excess moisture and stopping black mould before it has a chance to grow.
How PIV Treats Black Mould & Condensation
Unlike temporary fixes like cleaning sprays or repainting, a Positive Input Ventilation (PIV) system tackles the underlying cause of black mould.
Here’s how it works:
- Fresh, filtered air is drawn in from your loft or outside
- This air is gently pushed through your home
- The steady airflow forces out stale, damp air
- Humidity levels are reduced, stopping mould growth at the source
A PIV unit runs quietly in the background, 24/7. It creates a drier, healthier environment without you needing to open windows or rely on noisy fans.
Once the system is in place, you’ll notice the difference. No more wet windows. No more peeling paint. And best of all, no more black mould on the walls.
Getting a PIV System Is
As Easy as 1, 2, 3
At Clear Air PIV, we make the whole process simple, stress-free, and cost-effective.
6 Reasons Black Mould Thrives In Your Home
1. Poor Ventilation
Modern homes are well-insulated and sealed for energy efficiency. But this can trap humid air inside. Especially if there’s no proper airflow to remove it. Bedrooms, kitchens and bathrooms are the worst affected.
2. Everyday Living
We all create moisture just by living. Cooking, showering, drying clothes indoors, even breathing. A typical family produces several litres of moisture in a single day. Without improving ventilation, that moisture builds up and clings to cold surfaces.
3. Lack of Air Circulation
Furniture pushed against walls, closed doors, or sealed-off rooms can limit airflow. This allows the damp air to settle and creates ideal conditions for black mould on your walls and ceilings to grow.
4. Cold External Walls
In homes with poor insulation, water damage or older brickwork, cold spots on external walls often become damp. These areas are magnets for condensation and black mould. Especially when it gets even colder in the winter months.
5. Blocked or Missing Vents
One cause is that a homes vents, extractor fans, or airbricks are blocked. Without working ventilation systems in place, moisture has nowhere to go and it stays in the home.
6. High Humidity in Bedrooms
Many people don’t realise how humid bedrooms can get. Overnight, body heat and breathing raise humidity levels. If the air can’t escape, mould starts to form on windows, behind headboards, and in corners in the form of condensation
