21/11/2025
Why does less heat transfer = less condensation?
Condensation happens when warm, moist indoor air hits a cold surface, like the inside face of a window. When that glass gets cold enough, the moisture in the air turns into droplets. That’s what causes the mold risk people hate.
This happens differently across window types:
❄️ Single glazing
With only one pane, heat escapes extremely easily.
The inside surface gets very cold, very quickly, which is why single glazing often has heavy condensation.
🥶 Standard double-glazed sealed units
These have two panes with an air or gas-filled cavity, which slows heat loss but doesn’t stop it.
Because there’s still air in the gap, heat transfers through conduction and convection, and the inner pane still becomes cold in winter.
That’s why many homes with sealed units still see morning condensation, especially in bedrooms and bathrooms.
🔥 Now, here’s where LandVac Vacuum Glass wins:
1. The vacuum stops heat escaping
Normally, heat travels from the warm room → through the glass → outside.
In both single glazing and sealed units, this happens enough that the inner surface gets cold.
LandVac uses a vacuum layer between the panes. A vacuum has no air, so it blocks heat transfer almost completely.
The inside pane stays much closer to room temperature, even on freezing mornings.
2. A warmer interior pane = no condensation
Because the inside surface doesn’t get cold, the indoor air never reaches its dew point on the glass.
If the surface doesn’t drop to that temperature, moisture simply can’t condense.
In short:
❄️ Single glazing → big heat loss → very cold inner pane → heavy condensation
🥶 Sealed units → moderate heat loss → cold inner pane → common condensation
🔥 LandVac → minimal heat loss → warm inner pane → no condensation
