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.
Rain Gardens and Bio-Swales. Traditional buildings capture rain from the roof and direct it immediately into the storm drain system and eventually local streams. As development becomes more and more dense, our streams have been seriously impacted by this increased flow, as well as adding minerals and other pollutants.