Windows should not leak. They should be airtight when closed and they should be watertight or waterproof. Windows should be completely sealed and they should be weather-stripped. All types of windows undergo some wear and tear over time. In some windows, the deterioration may be cosmetic and there may not be any structural damage. Some windows may look fine but they could be seriously compromised. There are many correlations between leaking windows and rain. While leaks in windows become evident when it rains and water seeps inside a room, a leaking window is effectively a perennial concern. The insulation is compromised so the energy efficiency in your house would take a hit. At times, it is not the window but the surrounding components of your house that may cause the leak. Let us explore the various ways leaking windows and rain are connected.