Windows and Condensation Problems

Poor installed windows and problems with the weather-resistant barrier installed between them and the walls, are common causes of moisture and damages. But these aren’t the only causes of conden...

Window Fact Sheet by State

State fact sheets provide a step-by-step guide to selecting energy efficient windows. They are available for the cities and states listed below. Click here to pick your state...

Improving or Replacing Windows in Existing Homes

Whether you would like to improve the energy performance of your existing windows or replace them with new energy-efficient windows, several options are available. The benefits of efficient windows in...

Efficient Windows for New Homes

Efficient windows basics Designing new homes can be a complex issue, but some straightforward principles and guidelines may help you set a solid foundation for window energy efficiency upon which you ...

Selecting Windows for Energy Efficiency

New window technologies have increased energy benefits and comfort, and have provided more practical options for consumers. This selection guide will help homeowners, architects, and builders take adv...

Window Frame Types

The material used to manufacture the frame governs the physical characteristics of the window, such as frame thickness, weight, and durability, but it also has a major impact on the thermal characteri...

Window Technologies: Glazing Types

There are three fundamental approaches to improving the energy performance of glazing products (two or more of these approaches may be combined)....

Weatherstripping Double Hung Windows

For a durable and effective weatherstripping of your wood double-hung windows you may use V-strip materials. There are cheaper and easier to install alternatives, but with a much smaller lifespan....

Window Films

Window films are a proven low-cost method for reducing cooling bills. Many of the benefits of solar-control glazing (low-e coating) can be obtained by applying after-market films to common non-efficie...

Storm Windows vs Replacement Windows

Storm windows are a cheap solution for homes with inefficient primary windows. They are an alternative to new replacement windows, which are a more expensive option…...