If you have single pane windows, you may be experiencing higher than usual condensation on your windows from temperature variance in the morning.
Upgrading to a double paned window can reduce the thermal variance between outside and inside, leaving you better insulated and reducing internal moisture gathering. Otherwise, morning moisture is a matter of physics. Inside your home, when the temperature of the glass drops below the dew point of the inside air, visible moisture forms on the glass. The combination of a high level of moisture in the air and a cool glass surface triggers the condensation process. Additional condensation occurs when there is additional water in the air and/or when glass surface becomes cooler.
Water damage above and on the sides of a window: Water is coming from above the window. Check the seal at the top of the window and where the glass meets the window frame. The roof should be checked for cracks especially when parapets are concerned. A water test may be necessary, starting with the window, in order to rule out possible penetration areas.
Water damage below the window: Water is draining through the bottom of the window. The first place to check is the weep holes. Most people don’t realize that windows are designed to leak and then drain through weep holes. They are hidden very well in the most brands but they are there. Drought conditions caused them to fill with dust and dirt and then won’t allow the bottom track to drain properly when hit with rain.
A common sense approach will usually locate the leak. Sometimes in understanding that the window was designed to hold out only so much water at one time will tell you to take extra measures when dealing with the powerful storms. The most expensive, energy-efficient windows on the market all have air and water testing ratings. It is common for people to remark how terrible their window is because the curtains will move on windy days. The moving curtain may actually be more of an indication of how windy it is outside.
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