In many of the newly built or renovated homes across the villages west of Leicester, airtight construction is seen as energy efficient — but it can create hidden problems with condensation and mould. With windows rarely opened and homes sealed tight, trapped moisture builds up, creating the perfect conditions for mould growth.
This is where a Positive Input Ventilation (PIV) system makes a major difference.
What is a PIV System?
A PIV unit gently introduces filtered air, usually from the loft space, into the home at a continuous rate. This creates a positive air pressure that pushes out stale, moisture-laden air through natural leakage points or trickle vents.
The result? Cleaner air, less condensation, and a significantly reduced risk of black mould on cold walls or ceilings.
Why Airtight Homes Are Vulnerable
In older properties, natural draughts and ventilation helped carry moisture out. But in modern sealed homes, moisture from breathing, bathing, cooking, and drying clothes gets trapped indoors — especially during winter.
Even well-insulated homes in Leicester villages like Enderby, Narborough, Desford, and Glenfield are vulnerable if proper ventilation isn’t in place.
How PIV Helps Prevent Mould
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Reduces Relative Humidity indoors
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Prevents condensation on cold surfaces
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Improves indoor air quality
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Helps eliminate musty smells and allergens
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Low energy consumption and low maintenance
We regularly install PAM Ties PIV systems across rural Leicester homes as part of our mould control packages. These units come with built-in filters and quiet operation — ideal for families looking to maintain a healthy home without hassle.
Is a PIV System Right for Your Home?
If your home suffers from misty windows, bathroom mould, or cold corners developing black patches, a PIV system could be the answer. We assess your property's layout and needs during a free survey and recommend a suitable ventilation solution.
As a family-run business and proud Damp Proofing Association member, we offer reliable advice and insurance-backed guarantees on all our work. Whether you're based in Leicester or the surrounding countryside, we’re here to help.
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