Why Do I Have Condensation On My Windows?
When it comes to springtime, we often see an influx of condensation on the outside of our windows, especially from high-performance double glazing. The build-up of dew shows that the windows are doing their job. That includes keeping the warmth in and the cold out. So really there is no reason to worry.
External condensation is a natural phenomenon. It usually occurs in autumn and springtime. The dew point is the temperature where concentrated water vapour in the air forms dew. If and when the air temperate cools down, the dew point can no longer hold moisture. That forces water vapour to condense.
While the effect of condensation doesn’t last long, there is very little to avoid it building up on the outside windows. Once the window panes have warmed up from the sun, the moisture will evaporate. Wind and breezes can also help remove the build-up of dew.