The top is related to the overall face of the home. In order to cover the hidden projects and ensure the beauty, many people have made ceilings on the top. The ceiling is originally intended to add brilliance to the home, but if it itself is cracked, it will have the opposite effect. Ceiling cracking is a relatively common phenomenon, so how to prevent cracking of home ceilings, how to maintain the ceiling? Follow the small series together to understand the knowledge of ceiling maintenance.
Home ceiling crack prevention and repair
Part1: The reason for the cracking of the ceiling
Ceilings are places where cracks are more likely to occur. Many homeowners who have been renovated should have this problem. Why do ceilings crack easily? There are many reasons. Let's take a look at the details below.
First, the construction materials do not pass
| Skeleton material | If the quality of the skeleton material does not meet the requirements, it will directly affect the entire skeleton, which is an important reason for cracking and deformation of the ceiling. For example, if the rigidity and straightness of the keel and hanger are not enough, internal stress will be generated. In the process of release, the gypsum board will inevitably produce deformation cracking. |
| Covering material | The commonly used cladding material is a gypsum plaster board, which is tightly fixed to the keel by a high-strength self-tapping screw. If the gypsum board fails to meet the quality requirements, the gypsum board and the keel cannot be firmly fixed to each other. When the gypsum board joints will produce shear force, leading to cracks in the board joints |
| Caulking material | Caulking materials include seam strips and caulking putties. Seam tapes require good adhesion and strength. Caulking putty not only requires good strength and adhesion, but also has certain toughness and good workability. If you do not achieve the above performance, it will inevitably produce cracks |
| Boom | The boom itself is bent. After being installed for a period of time, it is gradually straightened by the gravity of the plate, causing uneven subsidence of the surface of the auxiliary keel and gypsum board, resulting in cracks at the joints. |
Second, the installation of construction is not standardized ceiling cracking
When the ceiling keel and gypsum board are improperly installed, stress will be generated, and the generated stress will be slowly released after the ceiling project is completed. When the stress is greater than the fastening force, it will easily lead to cracks in the gypsum board joints.
1, the installation of the boom is not standardized
When the boom is installed, the boom is pulled by bolts without proper payout. When the keel is installed, if the boom is found to be in an improper location, instead of reinstalling the boom, the boom is bent so that the keel is stressed. In the future, the hidden ceiling will be buried and hidden.
2. Improper fixing of gypsum board
When installing plasterboard, if there is no installation specification, screw from the middle to the four sides, but from multiple places on the four sides at the same time, the gypsum board will also produce stress, if the stress is enough, it will cause cracking; In addition, if the fixed The gap between the screws of the gypsum board is too large or some of the screw positions are correct, but if they are not fastened, it will also cause cracking.
3, moisture treatment is not in place
If the wood keel is used, when the moisture-proof treatment is not done well, the wood is easily deformed by moisture, leading to cracking of the ceiling. In addition, the gypsum board is also relatively easy to get wet. When the mounting screw is fixed, if the drilling is careless, the board is cracked, so that the gypsum board is easily deformed, resulting in cracks on the ceiling surface.
4, improper scraping process
If the interface between the gypsum board and the wall, wood splint, etc., is shrunk or shrunk differently, the joints will easily crack. For example, putty drying is too fast, the seam is too long, the putty is too slow to solidify, and the putty layer is too thick for cracking.
Third, finished product protection is not in place
After the completion of the suspended ceiling, there may be other types of work processes. If the co-ordination work is inconsistent, the work is confusing, and mutual interference will occur, the brute construction of the downstream process will make it easier to crack the ceiling. For example, when the lamp hole is opened, there is no protection measure, causing vibration of the ceiling, which leads to cracks. In addition, after the routine maintenance and repair of concealed pipelines and equipment inside the suspended ceiling, if there is no standard operation, it is easy to cause deformation of the keel or damage to the finish, which will cause the ceiling to crack.
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