Rock wool products can be seen everywhere on the construction site. Many customers should know rock wool felt, but they are not very familiar with external wall rock wool board. In fact, the difference between rock wool felt and external wall rock wool board is that one is softer and the other is relatively hard, so the application places of these two types are different.Below is a brief introduction of external wall rock wool board.

     The external wall rock wool board not only has high compressive and tensile strength during construction, but also the external wall rock wool board will not expand or shrink during construction.
     Due to the relatively high density of external wall rock wool board, this product not only has a certain sound insulation effect, but also has a certain flame retardant function, which can effectively prevent the fire from spreading. If the fire is relatively large, the external wall rock wool board can also absorb a large amount of hot air, and the decrease of surrounding air can delay the development of the fire and buy time for rescuers. This technology is full of praise from consumers. The reason why there are such beneficial functions is the credit of the density of  external wall rock wool board.