External wall insulation is a very important project in the building, it can effectively improve the thermal insulation performance of the building, reduce energy consumption, improve indoor comfort. As a commonly used external wall insulation building material, the selection of rock wool density plays a key role in the external wall insulation effect. So, how much should the density of the rock wool board be selected to achieve the best results?

The density of the rock wool board is generally between 80-200kg/m3, and different densities have a certain impact on the insulation effect. In general, for general residential and public building external wall insulation, the choice of 100-120kg/m3 rock wool board is more appropriate. There are several reasons for this:

First of all, the rockwool board in this density range has good thermal insulation performance. Through experiments, the rock wool board in this density range can effectively isolate the conduction of indoor and outdoor temperature differences and reduce heat loss. This can improve the thermal performance of the building, reduce the occurrence of cold and hot Bridges, and ensure the stability of indoor temperature.

Secondly, the 100-120kg/m3 rockwool board has good fire resistance. Rock wool is a non-metallic, inorganic thermal insulation material, its flame retardant performance is better. In the external wall insulation, safety is a crucial consideration, the selection of rock wool board with good fire resistance can effectively improve the safety of the building.

In addition, the rock wool board in this density range also has a certain sound absorption performance, which can reduce the spread of noise and provide a more peaceful indoor environment.

Of course, in the actual selection, it is also necessary to comprehensively consider various factors such as the specific building structure, climatic conditions, and thermal insulation requirements. If you pursue higher insulation performance, you can choose a more dense rock wool board, but the corresponding cost will increase. Therefore, when selecting the density of the rock wool board, it is necessary to weigh the insulation performance, cost and other requirements to ensure that the design requirements and safety requirements are met.