No, windows and doors do not cause condensation. Exterior condensation is dew; the same condensation you see on car windows, lawns. and streets on many mornings. Dew on windows is a natural atmospheric phenomenon, and it doesnât mean your windows are leaking air.
Simply put, wind driven rain is damage caused by rain that was propelled by wind through the window seals or door seals. In other words, if the wind was not in the equation, the water would never have made it into the dwelling to cause damage.
Many scientists speak of a spun up water cycle as a result of global warming; more water cycling through the atmosphere as a result of the increased precipitation rate. Some 96,000 km 3 of rain falls upon land somewhere in the world each year. The picture on the left shows a rain shaft below a cumulonimbus cloud.