Tel: +86 13828022123   E-mail: wanwenmickey@foxmail.com

Fire Rated Windows: Features, Cost, and Openability

Views: 0     Author: Site Editor     Publish Time: 2024-09-10      Origin: Site

facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button

What Makes a Window Fire Rated?

A fire-rated window is specially designed to withstand the intense heat of a fire for a specified amount of time. The primary function of these windows is to prevent the spread of fire, smoke, and heat from one area to another, thereby allowing occupants time to evacuate safely and limiting damage to property. But what exactly makes a window fire rated?


The answer lies in the materials and construction techniques used to create the window. Fire-rated windows are typically made with specialized fire-resistant glass, frames, and seals. The glass in fire rated door with window is designed to withstand high temperatures without breaking or shattering. One common type is tempered glass, which is treated with a thermal or chemical process to enhance its strength. Another is laminated glass, which consists of multiple layers of glass bonded together with interlayers that can endure extreme heat without cracking.


Moreover, the frames of fire-rated windows are constructed from non-combustible materials like steel or aluminum, which are less likely to catch fire. Fire-rated windows also include intumescent seals around the frame that expand when exposed to heat, creating a barrier that prevents smoke and fire from passing through the gaps.


A crucial factor in determining a window's fire rating is its fire-resistance duration. Windows are rated based on how long they can withstand fire exposure. For example, a 2 hour fire rated windows is tested to resist fire, heat, and smoke for up to two hours, providing a significant level of protection in a fire emergency. The fire rating of a window is determined through rigorous testing in accordance with standards like ASTM E119 or EN 1364.


fire rated windows

Are Fire Rated Windows Expensive?

Fire-rated windows are generally more expensive than standard windows, and several factors contribute to their higher cost:


Specialized Materials: Fire-rated windows are made from specialized materials like fire-resistant glass, non-combustible frames, and intumescent seals. These materials undergo a specific manufacturing process to enhance their fire resistance, which contributes to the overall cost.

Stringent Testing and Certification: Fire-rated windows must undergo rigorous testing to meet specific safety standards. These tests are conducted by accredited laboratories to ensure that the windows meet the necessary fire safety regulations. This certification process can be costly, adding to the price of the window.

Custom Design Requirements: In many cases, fire-rated windows must be custom-made to fit specific dimensions and architectural requirements. This customization can further drive up the price compared to off-the-shelf standard windows.

Installation Complexity: The installation of fire-rated windows often requires specialized knowledge and skills to ensure they function as intended during a fire. The complexity of installation can lead to higher labor costs, adding to the total expense.


Despite these costs, many building owners and developers consider fire-rated windows a worthwhile investment due to the enhanced safety they provide. In addition, some insurance companies offer lower premiums for properties equipped with fire-rated windows, which can offset the initial cost over time.


The cost of fire-rated windows can vary significantly based on the level of fire resistance required, the size of the window, and other specifications. For instance, a 2-hour fire-rated window will generally cost more than a window rated for just 30 minutes of fire resistance. However, the peace of mind and added protection these windows provide make them a valuable addition to any property, especially in areas prone to fires or in buildings where safety is a top priority.


Can a Fire Rated Window Be Openable?

Yes, a fire-rated window can be openable, but there are specific conditions and limitations associated with this feature. The primary function of a fire-rated window is to prevent the spread of fire, so any operable parts must still comply with fire safety standards.


Openable fire-rated windows are designed with special hardware and mechanisms that allow them to be opened for ventilation or emergency escape while still providing the required level of fire resistance when closed. When the window is shut, it must seal completely and prevent the passage of flames, smoke, and heat for the duration specified in its fire rating.


The design and functionality of openable fire-rated windows must meet the following criteria:


Automatic Closing Mechanisms: Many openable fire-rated windows are equipped with automatic closing devices that trigger when a fire is detected. These mechanisms ensure that the window closes promptly to maintain its fire-resistant barrier.

Fire-Rated Glass and Frames: The window must still be constructed with fire-resistant glass and non-combustible frames. The glass should remain intact and provide a barrier against flames and smoke for the rated duration, even if the window can be opened.

Compliance with Local Building Codes: Building codes and regulations in different regions may have specific requirements for openable fire-rated windows. These regulations may dictate how and where such windows can be installed and used. It is essential to ensure that any openable fire-rated window complies with local building codes and safety standards.


While openable fire-rated windows offer flexibility and functionality, their availability and use depend on the specific requirements of a building's fire safety plan. They are most commonly used in buildings where natural ventilation is necessary, or where emergency escape routes need to be maintained while still providing a high level of fire protection.

fire rated door with window

Additional Considerations for Fire Rated Windows

When selecting fire-rated windows for a building, several additional factors should be considered:


Compatibility with Fire Rated Doors: In some cases, fire-rated windows are installed alongside fire-rated doors with windows. These combinations provide enhanced visibility and light transmission while maintaining fire safety. The window within the door must meet the same fire-resistance standards as the door itself.

Aesthetics and Functionality: Fire-rated windows are available in various styles, finishes, and designs to match a building's aesthetic. Manufacturers can customize the look of these windows without compromising their fire-resistance properties, ensuring that they integrate seamlessly with the overall design of the building.

Maintenance and Durability: Regular maintenance is essential for fire-rated windows to ensure they remain effective. This includes checking the integrity of the glass, frame, seals, and any automatic closing mechanisms. In addition, some fire-rated windows may have a longer lifespan than others, depending on their materials and usage, so it is essential to choose windows that offer both durability and ease of maintenance.


Why Choose Hengbao for Fire Rated Windows?

When it comes to fire-rated windows, Hengbao stands out for its excellent quality and commitment to safety. Hengbao's fire-rated windows are manufactured using the highest-quality materials, including fire-resistant glass and non-combustible frames, ensuring optimal performance during a fire emergency. The company's rigorous quality control measures and adherence to international safety standards guarantee that its products provide reliable protection.


Hengbao offers a range of fire-rated windows, including options with different fire-resistance durations, such as the 2-hour fire-rated windows. These windows are tested and certified to meet or exceed industry standards, giving you peace of mind knowing that your property is well-protected.


2 hour fire rated windows


In addition to quality and safety, Hengbao's fire-rated windows are designed with aesthetics in mind. They are available in various styles and finishes to complement any architectural design while still providing the required fire protection.


Whether you need windows that are fixed or openable, Hengbao has options to suit your specific needs, and their team of experts can provide guidance on selecting the right windows for your building. With Hengbao, you can trust that you are investing in windows that offer both functionality and superior fire protection.


For more information or to inquire about Hengbao's fire-rated windows, please contact them at wanwenmickey@foxmail.com. Hengbao's dedication to quality and safety makes them a trusted choice for fire-rated windows that provide peace of mind and protection.




fire rated windows

fire rated door with window

2 hour fire rated windows