Fireproof Rock Wool Insulation Panels Customizable Protecting Lives / Properties

Rock wool boards, with their natural inorganic materials and special production processes, possess excellent non-combustibility and high-temperature stability. In emergencies such as fires, they play four core roles—"blocking combustion, insulating high temperatures, controlling spread, and preserving safety"—to gain critical time for personnel evacuation, property protection, and fire rescue. The exertion of their fire resistance can be analyzed in detail according to different stages of fire development.

In the initial stage of a fire, rock wool boards can block the combustion chain immediately. Composed mainly of natural inorganic minerals such as basalt and dolomite, which are melted at temperatures above 1500℃ and processed into fibers, rock wool boards themselves are Class A non-combustible materials (certified by the national standard GB 8624-2012). When exposed to open flames or high temperatures, they do not burn, melt, or release flammable gases, fundamentally avoiding becoming a "combustion accelerant" for the fire. For example, when a small local flame caused by an indoor electrical short circuit comes into contact with a rock wool board partition or ceiling, only slight scorch marks appear on the board's surface without ignition, effectively preventing the fire from spreading from the ignition point to the surrounding area and creating favorable conditions for extinguishing the initial fire (such as using a fire extinguisher). Meanwhile, rock wool boards do not release toxic and harmful gases (such as formaldehyde and benzene series) in the early stage of high temperature, which maintains relatively safe air around the fire scene and reduces the risk of suffocation caused by inhalation of toxic gases.​

When the fire enters the spreading stage, the high-temperature insulation performance of rock wool boards becomes a core protective barrier. Their internal three-dimensional network fiber structure, filled with static air between fibers, can effectively block heat transfer. Under intense fire roasting at 800-1000℃, the thermal conductivity of rock wool boards can still remain at an extremely low level of 0.04-0.06W/(m·K), and they can maintain structural integrity for 30-60 minutes (the specific duration depends on the board thickness; a 50mm-thick board can usually withstand 1000℃ high temperature for more than 40 minutes). In the scenario of external wall insulation, rock wool boards can block the transfer of high temperature from the fire to the interior, preventing indoor items from being ignited by external high temperature and slowing down the development speed of indoor fires. In steel structure buildings, rock wool boards wrapped around steel components can slow down the heating rate of steel (steel loses its load-bearing capacity above 600℃), prevent steel columns and beams from softening and collapsing due to high temperature, maintain the stability of the building structure, and provide more evacuation time for trapped personnel. For instance, in a factory fire, a rock wool board ceiling can effectively block the downward spread of fire from the top, allowing ground personnel to evacuate along safe passages.​

In addition, during the fire rescue and subsequent handling stages, the fire resistance of rock wool boards still plays an important role. Due to their non-combustible and non-deformable properties at high temperatures, they do not form drips like combustible materials such as plastic and wood during a fire, avoiding high-temperature melts from dripping to ignite items below or scald people. At the same time, the residues left by rock wool boards after a fire are stable inorganic substances, with no risk of re-ignition, which reduces the possibility of secondary fires and facilitates fire rescue operations and subsequent cleaning work. For example, in a residential building fire, walls insulated with rock wool boards can still maintain their basic shape even after being burned by intense fire, without collapsing due to material combustion to block fire-fighting passages, and also reduce the difficulty of building restoration after the fire.​

In summary, in emergencies such as fires, rock wool boards construct a key fire-proof line through multiple roles of "non-combustibility to block ignition, insulation to control spread, stability to protect structure, and non-toxicity to safeguard safety", significantly improving the fire safety level of buildings and providing strong protection for people's lives and property safety.