Rock wool board is a common building insulation material. Many people choose rock wool board for insulation when decorating. In addition to thermal insulation performance, rock wool board also has certain fire resistance. Different thermal insulation materials used in different buildings have different requirements for fire performance. The size of the fire rating is directly related to the safety of the building, so what is the fire rating of the fireproof rock wool board?

　　The fire rating of thermal insulation materials is divided into four levels: A, B1, B2, and B3. According to the current "Classification Method for Combustion Performance of Building Materials", Class A is a non-combustible material. Rock wool board is an inorganic thermal insulation material with good fire resistance. It is widely used in the field of building fire protection. It is not easy to burn, does not release heat and toxic fumes, and can effectively cut off the spread of flames.

　　According to the different materials used, the fire rating of fireproof rock wool board is also different. Most of the insulation boards can reach the A level. If the glass magnesium board and cement board are used, they can reach the A2 level, while the ordinary board can only be used for to B1 level. The fire rating of Uetersen rock wool board has reached the national A-level non-combustible standard. In the event of a fire, the fireproof rock wool board can prevent the spread of flames and protect the stability of the building structure. The combination of rock wool of different thicknesses and other materials can achieve 1 To the fire resistance limit of 4 hours.

　　The main distinction of fire protection grades of thermal insulation materials:

　　Class A is mainly suitable for buildings with high safety factor requirements. It is a non-combustible building material that hardly causes burning problems and has the effect of preventing burning.

　　Class B1 is a flame-retardant building material, which has a good flame-retardant effect. Even if it encounters a high temperature or an open fire in the surrounding environment, the probability of fire is very low, and even if the fire does not spread quickly, it will automatically stop.

　　Class B2 is a flammable building material. Its flame retardant effect is smaller than that of B1 grade. After encountering an open fire in the surrounding environment, it will burn quickly, causing the fire to spread, which is very dangerous.

　　Class B3 is a flammable building material. It does not prevent burning. It is very easy to burn, and there is a great safety hazard during use, which is rare in formal buildings.