Products Description
1. Dry boards must be selected before construction. Because if the board is not fully dried, the metal carved board will automatically shrink and dry after installation, and it will crack at the weak link of tension, such as the junction of board and board, board and wall column, beam board or roof.
2. By reducing the ratio of the linear expansion coefficient of the external thermal insulation material of the building structure to the linear expansion coefficient of the external decoration leveling mortar, the external decoration surface layer and other materials, the gradual change between the plates is produced layer by layer, and the stress is flexibly released to prevent cracking.
3. Before plastering, apply SN-1 interface agent to ensure that the plastering mortar does not have shells and hollows. Cracks will form after shells and hollows, and will fall off after a long time. The interface agent is also called adhesive, and the thickness of the interface agent is about 1.5-2.5mm.
4. In the case of high floor heights, in order to ensure the rigidity of the board and avoid cracking of the joints between the slats and between the slats and the concrete wall columns, the steel mesh is used to staple with a long stapler along the vertical and horizontal directions. The connection between the board body is two-way with 250 strips at the top and both sides of the board to connect the concrete columns and walls, and then use "L" shaped additional expanded steel mesh to paste to enhance the strength of the connection.
The above are the measures to prevent the cracking of the metal carved insulation board. I hope that everyone will pay attention to these preventive measures during construction to reduce the occurrence of cracking of the board and prolong the service life of the board.
