How to Improve Ventilation in Homes with Sealed Windows

💨 Trapped Air, Condensation, and Mould – The Hidden Problem in Sealed Homes

Modern windows are great for energy efficiency—but they also come with a downside: poor airflow.

Sealed homes trap warm air inside, which can quickly turn into condensation and damp, especially during colder months. Without a source of fresh air, moisture builds up and can lead to black mould, musty smells, and poor indoor air quality.

That’s where a Positive Input Ventilation (PIV) system comes in.

🔧 What Is a PIV System and How Does It Help?

A PIV system gently introduces filtered, fresh air from the outside (often from the loft space), diluting humid, stale air throughout your home and pushing it out through natural leakage points.

This continuous flow of fresh air helps:
✅ Prevent condensation on windows and walls
✅ Stop black mould forming in corners and cold spots
✅ Reduce allergens and pollutants indoors
✅ Create a fresher, drier, and healthier living space

🏡 Why Sealed Homes Need Additional Ventilation

Double glazing and insulation seal off natural airflow
Trickle vents are often closed or ineffective
Internal moisture from cooking, showering, and drying clothes builds up

Without intervention, these conditions lead to condensation-related damage and unpleasant living conditions.

🌬️ Expert PIV Installation with Weather Wise Solutions

We supply and install reliable PIV systems from PAM Ties—built for quiet operation, energy efficiency, and long-term performance.

Our team will:
✔️ Assess your home’s airflow and moisture risk
✔️ Install the system neatly and efficiently (usually in the loft)
✔️ Advise on airflow, insulation, and managing condensation