Denver Builders FAQ on Windows and Doors
How often should residential windows be replaced?
Homeowners with windows over 25 years old should consider replacing them, both to gain the best energy efficiencies and to protect the “envelope” of the house. A home is an ideal candidate for a window replacement if its windows are sealed or painted shut, experiences ice buildup or a frosty glaze during the winter, gets fogged with condensation or has drafts that come through the windows.
What do U-values and R-values really mean?
When choosing any window or door, look for information that lists the product’s U-Value and R-Value. U-Values represent the amount of heat that escapes through a wall, window, roof or other surface. The lower the U-Value, the more energy efficient a material is. R-Values are the direct opposite and they measure an object’s resistance to heat flow. The higher a material’s R-Value, the lower its U-Value, and the less energy it will lose. An R-Value depends on the number of layers of glass in a window, what type of gas is between those layers, and whether one or more of the layers of glazing have been treated with a Low E coating.