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Types of Impact Windows According to Their Opening System

Impact windows are an essential component of any home’s defense against severe weather conditions, such as hurricanes and strong winds. These specialized windows are designed to withstand high-velocity impacts, protecting the interior of a building and its occupants from flying debris. When it comes to impact windows, there are several types available, each with its own unique opening system and benefits. In this article, we will explore the different types of impact windows based on their opening system and highlight their key features to help you make an informed decision when choosing the right windows for your home.

I. Single Hung Impact Windows

Single hung impact windows are a popular choice for many homeowners. They feature two sashes, with the top sash fixed in place and the bottom sash operable. The operable sash can be raised vertically for ventilation, and it also tilts inward for easy cleaning from the inside of the house. Single hung impact windows offer several benefits, including energy efficiency. The fixed top sash provides added strength, while the operable bottom sash allows for controlled airflow.

One of the key advantages of single hung impact windows is their affordability compared to other types of impact windows. They are a cost-effective solution for homeowners looking to enhance the safety and protection of their homes without breaking the bank. Additionally, single hung impact windows are available in various sizes and styles to complement different architectural designs.

II. Double Hung Impact Windows

Double hung impact windows are similar to single hung windows in terms of appearance, but with a significant difference: both sashes are operable. This means that both the top and bottom sashes can be moved vertically. Double hung impact windows offer greater versatility compared to single hung windows, as they allow for improved control over ventilation and airflow. By opening both sashes, you can create a natural flow of fresh air throughout your home.

The operational features of double hung impact windows make them a popular choice for homeowners seeking flexibility in their window design. They are also easy to clean, as both sashes can be tilted inward for convenient access to the exterior glass surfaces. With their enhanced functionality, double hung impact windows provide an excellent combination of style, convenience, and safety.

III. Casement Impact Windows

Casement impact windows are hinged on one side and swing outward like a door when opened. They offer unobstructed views and provide excellent ventilation by capturing breezes and directing them into the home. Casement impact windows are known for their superior energy efficiency, as they create a tight seal when closed, minimizing air leakage and improving insulation.

One of the key benefits of casement impact windows is their enhanced security. The hook-shaped locks embedded in the window frame make them extremely difficult to tamper with from the outside. The tight seal also prevents water infiltration during heavy rainstorms. Casement impact windows are an excellent choice for homeowners looking for both security and energy efficiency.

IV. Awning Impact Windows

Awning impact windows are hinged at the top and open outward from the bottom. This design allows for excellent ventilation while keeping rainwater out, even when the windows are open during a storm. Awning impact windows are ideal for areas where regular rain showers are common, as they offer protection from water intrusion without sacrificing airflow.

In addition to their functional benefits, awning impact windows are aesthetically pleasing and can complement various architectural styles. They are available in a range of sizes and configurations to suit different window openings. Whether you have a modern or traditional home, awning impact windows can add a touch of elegance while providing the necessary protection against impact.

V. Sliding Impact Windows

Sliding impact windows, also known as gliding windows, are horizontally oriented windows that operate by sliding on tracks. They are an excellent choice for areas with limited vertical space, such as patios and decks. Sliding impact windows provide a wide, unobstructed view and allow for ample natural light to enter the room.

One of the main advantages of sliding impact windows is their ease of use. They operate smoothly on tracks, making them effortless to open and close. Some sliding impact windows also feature a dual-pane design, further improving their energy efficiency. These windows are available in various configurations, including two-track and three-track options, allowing for customization based on your specific needs.


Selecting the right type of impact windows for your home is crucial for ensuring the safety, comfort, and energy efficiency of your living space. Single hung impact windows offer affordability and simplicity, while double hung impact windows provide enhanced ventilation control. Casement impact windows excel in security and energy efficiency, while awning impact windows offer protection from rain while maintaining airflow. Sliding impact windows are a space-saving option that provides unobstructed views and ease of operation.

When choosing impact windows, consider your specific requirements, the architectural style of your home, and the climate in your area. By investing in high-quality impact windows, you can protect your home from the devastating effects of severe weather conditions while enjoying the added benefits of improved energy efficiency and security.

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