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Casement windows are a popular choice for many homes due to their versatility, ease of use, and ability to provide excellent ventilation. One common question homeowners have when considering casement windows is: how far do they open?
In this article, we’ll explore the various types of casement window hinges and the opening angles they provide.
Standard Casement Window Hinges
Most casement windows are equipped with standard hinges that allow the window to open up to a 45-degree angle[3]. This opening angle provides ample ventilation while still maintaining a level of safety and security. Standard casement window hinges are suitable for most residential applications and are the most common type of hinge used in casement window construction.
Egress Casement Window Hinges
In some cases, casement windows may be required to serve as an emergency exit, such as in bedrooms or basements. These windows, known as egress windows, must meet specific size and opening requirements to ensure a safe escape in the event of a fire or other emergency. Egress casement windows are equipped with special hinges that allow the window to open a full 90 degrees[5], providing a clear and unobstructed path for evacuation.
Restrictor Casement Window Hinges
For added safety, some casement windows feature restrictor hinges. These hinges allow the window to open slightly, typically 1-2 inches, before a restrictor mechanism engages[7]. To open the window further, the restrictor must be manually released. Once released, the window can then open to either a 45-degree angle (for standard restrictor hinges) or a 90-degree angle (for egress restrictor hinges). Restrictor hinges are an excellent choice for homes with young children or in areas where fall prevention is a concern.
Factors Affecting Casement Window Opening Angles
While the type of hinge is the primary factor in determining how far a casement window can open, there are other considerations to keep in mind:
- Window Size: Larger casement windows may require additional support to maintain stability when opened to wider angles[2].
- Obstructions: The presence of exterior obstructions, such as walls, landscaping, or outdoor furniture, can limit the opening angle of a casement window[4].
- Building Codes: Local building codes may have specific requirements for casement window opening angles, particularly for egress windows[5].
Choosing the Right Casement Window Hinge
When selecting casement windows for your home, it’s essential to consider your ventilation needs, safety concerns, and local building requirements. Standard hinges are suitable for most applications, while egress hinges are necessary for windows serving as emergency exits. Restrictor hinges offer an added layer of safety in homes with young children or in areas where fall prevention is crucial.
Consulting with a professional window installer can help you determine the best type of casement window hinge for your specific needs and ensure that your windows are installed correctly and in compliance with local building codes.
Conclusion
Casement windows offer a range of opening angles, depending on the type of hinge used. Standard hinges allow for a 45-degree opening, while egress hinges enable a full 90-degree opening. Restrictor hinges provide an additional safety feature, limiting the initial opening to 1-2 inches before allowing the window to open fully. By understanding the different types of casement window hinges and their opening capabilities, homeowners can make informed decisions when selecting windows for their homes, ensuring optimal ventilation, safety, and comfort.
