How can people effectively solve the cracks in rock wool board

In the field of building construction, rock wool board has been welcomed and favored by many customers, but in the construction project, there is a phenomenon that the outer wall is prone to cracks. So how to prevent and eliminate cracks in the protective layer and the finish layer? It is proposed here to reduce the stress concentration of the protective layer and the shrinkage of the shrinkage stress. Next, introducing the main reasons for the cracks in the protective layer and the facing layer of the rock wool board.

1. The bonding strength between the protective layer and the thermal insulation layer is relatively low or the rock wool board is hollow.

2. Because of the stress concentration are at the doors, windows, and openings, the protective layer and the facing layer are flawed.

3. The protective layer and the facing layer of the rock wool board are relatively large due to shrinkage deformation.

According to the main reasons for cracks in the rock wool boards listed above, we can take the following crack prevention measures.

1. Rock wool board adopts micro-shrinkage anti-cracking or polymer mortar with high bonding strength, small shrinkage deformation, and certain elasticity.

2. Using steel wire mesh or steel mesh sandwich rock wool board reinforcement layer, the steel mesh not only can strengthen the connection of the structural layer, the thermal insulation layer, and the protective layer, but also can discretize the shrinkage stress and stress concentration of the protective layer and the facing layer. Thereby, it can reduce or avoid the occurrence of gaps in rock wool boards.

3. Separate the protective layers of the rock wool board and make the joint waterproofing to reduce shrinkage and temperature stress.