1. Building materials: The quality and strength of building materials directly affect the stability and durability of the wall. If inferior or unsuitable building materials are used, the walls will crack.
2. Building structure problem: The design and construction of building structure is also one of the important reasons for wall cracking. If the structural design of the building is unreasonable, or there are problems in construction, such as improper installation of steel bars and uneven concrete pouring, the wall will crack.
3. Temperature change: Temperature change is also a cause of wall cracking. When the temperature changes, the wall will expand or contract. If the paint or decorative materials on the wall can't expand or contract with it, it will lead to cracks in the corner.
4. Humidity change: Humidity change is also a cause of corner cracking. In humid environment, the wall will be eroded by moisture, and it will expand after absorbing water, losing its original stability and cracking.
5. Foundation settlement: Foundation settlement is another common cause of corner cracking. If the foundation of a building is unstable or the soil is uneven, the whole building will tilt and twist, which will lead to cracks in the walls.
When cracks are found in the corner, measures should be taken to repair them in time to avoid aggravating the problem. It is recommended to find a professional decoration company or construction team for inspection and maintenance.