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What’s the Optimal Opening Direction for a Casement Window?


December 19, 2023

Determining the direction in which a casement window opens is crucial to ensuring optimal functionality and convenience. Whether it swings to the right or left, the choice can greatly impact your home. Casement windows, also known as crank-out windows, offer numerous benefits, such as expansive glass views, energy efficiency, and excellent air circulation.

When selecting casement windows, it is important to consider factors such as ventilation angles, noise control, and ease of operation in order to make an informed decision.

Understanding Casement Windows

Casement windows are hinged on one side and can be opened either to the left or the right. While some casement windows are manually operated by pushing or pulling, most are equipped with a hand crank for easy opening and closing.

Determining the Swing

The direction in which a casement window opens is referred to as the handing. Casement windows are labelled as either FCL (From the Curb Left) or FCR (From the Curb Right). To determine the handling of a window while standing outside, an FCL window will have the hinges on the left, while an FCR window will have the hinges on the right. It is important to note that these directions only apply to casement windows that swing outwards, as inswing casement windows are uncommon.

Consider Hinge Placement

For aesthetics and visual harmony, it is recommended to install casement windows with hinges near the corner of a room. This arrangement creates a more pleasing appearance.

Placement of Hinges for Multiple Windows

When multiple casement windows are installed next to each other or connected to a stationary window in the middle, it is more common for the hinges to be positioned on the outer sides. This configuration ensures a cohesive and streamlined look.

Optimizing Ventilation

To maximize the benefits of fresh air circulation, it is important to install casement windows that open into the prevailing wind direction. This allows the window to capture and channel cool breezes indoors. For rooms with multiple windows, it is advisable to have at least one window that opens in each direction to accommodate varying wind patterns.

Consider Noise Reduction

In addition to ventilation, casement windows can also serve as effective noise barriers. To minimize external noise intrusion, it is advisable to choose windows that open away from busy streets or noisy neighbours. This consideration is particularly important when selecting windows for bedrooms.

Privacy Considerations

Casement windows with tinted or frosted glass can provide privacy while still allowing natural light into bathrooms and bedrooms. By ensuring the correct handing, a casement window can offer a beautiful backyard view while maintaining privacy from the street or neighbouring houses.

Convenient Operation

Most individuals find it more intuitive to operate a window crank with their dominant hand. Taking this into account, it may be beneficial to choose an FCL window with the crank on the right and the latch on the left, as this configuration is more compatible with the right-handed majority.

Effective Communication

For builders and window installation contractors, it is essential to inform clients about the available options for casement window handling. Similarly, homeowners embarking on new home construction or renovations should communicate their preferences to contractors. Open and clear communication ensures smooth project execution.

Overall, these methods provide valuable guidance for selecting the appropriate direction of opening for casement windows. By considering ventilation angles, noise control, privacy, and convenient operation, homeowners can make informed decisions that enhance the functionality and aesthetics of their homes.



Marvin experts are experienced in working with architects, builders and homeowners to ensure your vision becomes a reality.

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