Class A Fireproof Stone Coated Roofing

The substrate does not burn

Colored stone particles are resistant to high temperatures

Very low heat conduction

Double fire protection

In building fire accidents, roofing materials often become the key channel for fire to spread. According to the standards of the American Underwriters Laboratory, the fire protection level of roofing materials is divided into three levels: A, B, and C. Among them, Class A is the highest level, requiring that the material does not burn or spread in the open flame test, and the burning dripping will not cause a secondary fire. Class A Fireproof Stone Coated Roofing is designed through a special process to combine the non-combustibility of the metal substrate with the high temperature resistance of the surface colored stone particles to form a double fire barrier .

The core fire protection principle is: the melting point of the 0.4-0.6mm Galvalume steel substrate is as high as 650℃, far exceeding the combustion temperature of ordinary fires (the general building fire temperature is about 400-500℃); the surface colored stone particles are sintered at 1200℃, and the main component is silicon dioxide (content ≥70%), with extremely low thermal conductivity (0.8-1.2W/(m・K)), which can effectively block heat transfer. According to standard tests, the material did not show flame spread in the combustion test, and the mass loss rate after combustion was less than 5%, which fully meets the Class A fire protection requirements .

Multiple performance synergies beyond fire protection

High temperature aging resistance : Under long-term sunlight exposure, the color fastness of the surface colored stone particles reaches the standard level 4 or above, and the color change ΔE in 20 years is less than 3, avoiding the attenuation of fireproof performance caused by material aging .

Hail impact resistance : Through the impact resistance test, it can withstand the impact of 25mm diameter hail at a speed of 113km/h, with no damage on the surface and no dents on the substrate, protecting the integrity of the roof structure in extreme weather .

Environmental protection and safety : No harmful substances such as asbestos and formaldehyde are used in the production process, and no toxic gas is released during combustion, providing safety protection for green buildings .

Forest fire protection : In California and British Columbia, Canada, where wildfires frequently occur in North America, the fire loss rate of traditional wooden roofs or asphalt shingle roofs is as high as 30%-50%, while the fire survival rate of Class A Fireproof Stone Coated Roofing is more than 120 minutes.

Urban high-rise buildings : As the building height increases, the chimney effect causes the fire to spread faster. The use of Class A fireproof colored stone tiles on the roof of high-rise buildings can effectively prevent external flying fires (such as fires in adjacent buildings, fireworks, etc.) from igniting the roof, while avoiding the burning of roofing materials to produce toxic gases.

Industrial storage buildings : Warehouses storing flammable items and buildings around gas stations have extremely high fire protection requirements. A warehouse in a chemical park uses Class A fireproof colored stone tiles, combined with an automatic sprinkler fire extinguishing system. In the simulated gasoline combustion test, the roof temperature was always controlled below 300°C, and no structural damage occurred, ensuring the safety of stored materials .

Class A Fireproof Stone Coated Roofing is not only a material choice that meets fire protection regulations, but also a proactive investment in the safety of life and property. Against the backdrop of increasing global fire risks, it builds a reliable fire barrier for all types of buildings with its scientific fire protection design, excellent weather resistance and environmental safety features.

1. Q : Are you a factory or a trader?

A: We have our own factory. We have been providing professional products for 27 years.

2. Q: Is your equipment advanced?

We have multiple production lines. The equipment in the factory is maintained regularly. The equipment is updated every few years to ensure the quality of the products.

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