Gypsum board ceiling cracking in the end what is the reason for it?

Although the gypsum board has a strong anti moisture, paper surface layer can be extended to the time of inhalation of water, but can not prevent water absorption. In the process of installation, for a long time or continuous moisture soaked, will reduce the strength of the gypsum board. Therefore, the wet plate can not be installed in the construction.
High temperature has a certain influence on the strength of gypsum board. When the environment temperature of gypsum reaches 42 degrees, the solidified gypsum will begin to change the crystal structure, so that the strength is damaged, so the gypsum board can not be directly connected with the heater and so on.
The caulking process is a direct factor of the success of the joint treatment
The suspended ceiling in a variety of stress state, therefore, vertical and horizontal seams of gypsum board corresponding to various stress influence, which requires the plates remain appropriate seam caulking material has its own strength and sufficient bonding force, but also a joint reasonable construction technology and high skills in counterbalancing the tensile stress, avoid cracks. At present, no material design caulking clearly stipulates that the construction unit mostly parametor kanfengnizi, its strength can not meet the requirements; some construction units with high-grade rubber, but the price is expensive; some construction units with double punched tape or mesh to strengthen, strengthen, and achieved good results. Therefore, how to grasp the process is very important.
Influence of design and construction of light steel keel frame structure with suspended ceiling
The reasonable design, the use of qualified materials and parts, and strictly grasp the construction quality, is to ensure that the QST system ceiling is not deformed, not crack the important guarantee. Any part of the error, negligence will lead to deformation and cracking. For example, between gypsum board and keel fixed, if not in order or fixation, the internal force of plate slab joints, shear, will cause deformation and crack; keel stiffness and straightness is not enough, spacing properly, will produce deformation and cracking.
The influence of the installation of gypsum board ceiling without working procedure and the construction of civilization
When the common sealing process is completed, even after the paint