Admitting natural light, permitting views to the yard and beyond, allowing natural ventilation—windows perform a number of critical roles in a home. And because of the wide range of jobs they must do, sometimes simultaneously, windows must be chosen thoughtfully and mainted with care. perform a number of critical Their work is often complex; for example, windows are expected to allow in light and views but keep out wind, rain, glare, cold, and intruders. To accomplish all of these tasks, windows must be designed with a range of features that work together seamlessly.

Of course, windows come in many shapes and sizes and are made of several different materials, from wood to aluminum to vinyl. Basically, all windows have frames and glass, and most have weatherstripping. Windows used for ventilation have a means of opening and closing and may have screens to keep insects and debris outside.

When you’re in the market for new windows, knowing what features to seek can be a challenge. The buying guide information in this section of HomeTips will help, as will the information on installing, caring for, and repairing windows.