The core safety issue of whether building insulation materials will burn or not is a concern for many people when choosing building insulation materials. So, will rock wool insulation boards burn or not?

The answer is no. Rock wool is classified as an A-grade fireproof material.

Why doesn't rock wool burn?

First of all, it must start from the raw materials of rock wool and its production processes. The main raw material components of rock wool are basalt, diabase, and other natural minerals and a small amount of slag. Then these materials were melted at above 1450 ℃ into a liquid state and then spun into fine inorganic fibers through high-speed centrifugation.

Rock wool belongs to "stone thread" essentially. Its composition is the same as a stone, so it is an inorganic substance. Of course, stones do not burn, so rock wool has natural fireproof properties.

What are the advantages of the fire-resistance performance of rock wool?

The highest fire resistance rating: Chinese and international standards stipulate that rock wool is an A-level non-combustible material, which is the highest grade among fire resistance ratings.

Extremely high heat resistance: the melting point of rock wool is as high as over 1000℃. In case of a fire, it effectively prevents the spread of flames, buying precious time for personnel evacuation and fire rescue.

It can be used for structural protection: wrapping rock wool in steel structure buildings can protect the steel beams and columns from high temperatures for a long time during a fire, prevent them from softening and deforming rapidly, thereby ensuring the overall stability of the building structure and avoiding collapse.

Summary If one is looking for an insulation material that will be both energy-saving and safe, rock wool is without doubt the ideal choice. Its property of being absolutely non-combustible provides critical "firewall" protection for buildings and occupants. We have a wide variety of rock wool products to choose from. Click here for a customized solution.