The 7 Common Types of Windows Used by Builders

1
Awning Windows Maximize Light

Open Window Of House
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Awning windows are those window types designed to maximize light and air inside the structure. These types of windows are usually installed in bedrooms and other areas where privacy is needed but where light and air are considered important too. Awning windows can be installed next to other windows, in columns or installed well above patio or terrace ​doors, creating additional light and air in entrance areas. However, awning windows can present security issues due to the gap created when the window is open. If you decide to install an awning window in a high location, consider installing self-cleaning glass to minimize cleaning problems in the future.

2
Casement Windows Ideal for Light and Air Entrance

Wooden casement window, outside
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Casement windows are easily recognized because they open outward, allowing light and air into the building. This type of window, when closed, creates a tight seal for better energy efficiency and reduced electricity costs. Casement windows are easier to operate because they incorporate a slide rail mechanism that carries the weight of the window. This type of window is more common in newer homes and more typical in the western part of the United States. They're the perfect choice above cabinets, counters, or areas where they can be cranked outward to open. 

3
Double Hung and Single Hung Windows Ideal for Exterior Areas

Isometric Double Hung Window
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Double hung windows are one of the least energy efficient windows on the market today. Since they can only be opened halfway, these type of window restricts the airflow more than any other window. Double hung windows are ideal for exterior areas near walkways and patios because they do not take up exterior space. One of their main advantages is that they are easy to clean and repair. Another version of this window is the single hung window type. The single hung version has only a lower space for ventilation. They are ideal for use when the window is located near a walkway or deck on which the window will not be an obstruction to walkers.

4
Picture Windows Ideal for Bathroom Locations

Bathtub with a view
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Picture windows are best in areas where airflow is not important. Picture windows are often installed high on walls and hallways, providing excellent lighting. This type of window --when used in conjunction with full louver doors -- creates the perfect combination of airflow and light. These types of windows provide visual appeal only. If the glass area is too large, the window becomes susceptible to vandalism, and replacing glass could be expensive.

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5
Bay Windows for Kitchens

Empty bay windows
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Bay windows are an excellent resource for architects to create angles and projections on the building structure. Bay windows allow light to enter at different angles, plus bay windows' lateral panels can be opened to enable airflow. They are mainly used in kitchens and family rooms, and typically do not come with screens. They add dimension to a flat wall and provide the opportunity for all manner of architectural enhancements.

6
Jalousie Windows for Warm Weather

Very narrow window
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Jalousie windows are inexpensive solutions for warm weather areas, or where air conditioning is not needed. Jalousies are made of glass slats set in metal clips that can be opened and closed in unison. Also called a louvered window, a jalousie is made like a glass shutter. This type of window allows great airflow, provides reliable security and a nice outdoor view. Jalousie windows cannot be completely sealed, allowing heat transfer from the outside.

7
Hopper Windows

Person Standing in Empty Attic
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Hopper windows are often installed in basements. A hopper window is a type of casement window flipped on its side. The tilting panel opens inward, allowing for maximum ventilation in a reduced area. Due to their titling action, they are not recommended for rooms where shades or curtains are going to be installed. Hopper windows are super energy efficient. When closed, they offer a tight seal that prevents air from entering or exiting. Hopper windows are usually installed close to the ground. The angle of the window prevents dirt, leaves, and other debris from blowing into the house. Hopper windows are the best choice when it comes to providing optimal ventilation in small areas, like bathrooms.