Smoke exhaust glass wool board is a glass wool product specially developed for fire smoke exhaust style fireproof package. It is to compound a layer of fireproof veneer (aluminum foil veneer, FFR veneer, etc.) on the surface of glass wool to enhance the fire resistance of glass wool. In addition to the veneer, the density also largely determines the fire resistance time of smoke control glass wool. So, how much is the density of smoke control glass wool board?

It is correct to say that the density of smoke control glass wool board is not fixed, but is determined according to different application scenarios and fire resistance requirements. According to the relevant regulations of the Technical Standard for Building Smoke Control and Exhaust System, the fire resistance limits of smoke control and exhaust ducts are 0.5h, 1h, 1.5h, etc. During the test, the smoke exhaust ducts and connecting components can maintain their structural integrity during this time. The fire resistance limit mentioned here is not the fire resistance limit of the smoke control glass wool board, but the fire resistance limit of the smoke control duct with good fire protection treatment.

Generally speaking, the density of smoke control glass wool board is between 48kg/m³ and 96kg/m³. The density selection in this range is designed to meet different fire duration requirements. For example, our smoke control glass wool, its density is 48kg/m³, thickness is 50mm, can fire for 0.5 hours; The density is 60kg/m³, the thickness is 50mm, and it can be fire resistant for 1 hour (fire inspection report can be provided). The density of smoke control glass wool produced by different manufacturers is not the same, but the difference is not large.

Some manufacturers can make the density of smoke control glass wool 36kg/m³, you can fire for 0.5 hours, it may be caused by brushing fire retardant paint. Fireproof paint will release toxic substances when burning, so some areas prohibit the use of fireproof paint in smoke exhaust ducts. This is something to be aware of.

We all know that the higher the density of smoke control glass wool, the higher the cost. For some fire prevention places with lower requirements, you can choose a smoke control glass wool board with lower density. And for some places with higher fire protection requirements, such as high-rise buildings, public buildings, etc., it is necessary to choose a higher density smoke control glass wool board, these high-density glass wool boards have better fire resistance, can play a better protective role in fire, to ensure the safety of people's lives and property.

The density of smoke control glass wool board is one of the important indicators of its fire performance, and selecting the appropriate density is crucial to ensure the fire protection effect. In practical applications, it is necessary to select the appropriate smoke control glass wool board according to the specific fire protection requirements and budget situation to ensure the safety and reliability of the building.