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Energy Efficient Windows Have Value – But Raise Questions

windowsFenestration in general – and windows in particular – are among the most important building blocks of energy efficiency.

Constellation offers a good primer on the types of windows that are available. Casement windows, the piece says, “open outward, like a door” and are the most energy efficiency windows. Double-hung windows open vertically from the top or the bottom. Single-hung windows open vertically from the bottom and are the most efficient sliding windows. Sliding windows that open horizontally are the least efficient because the connection between the window and the frame often is amiss.

It is important to examine all new technology carefully. A story at WRAL details how the reflection from energy efficient windows at a Davie County home was so intense that it caused multiple fires in a neighbor’s yard. To make matters worse, the fires were close to a propane tank.

The story quotes an insurance investigator who says that it is too early to draw any conclusions, but that study needs to be done to assess the dangers of energy efficiency windows.

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