Reason:

1. Aging deformation of window frame: After long-term use, the window frame material may decay and deform, resulting in poor combination with the wall.

2. Instability: The fixing measures were not in place during the initial installation.

3. Loose wall: The wall of the old community may be loose and cracked, which will affect the stability of the window.

4. External factors: such as long-term wind and rain erosion and vibration.

Solution:

1. Replacing the window frame: choose a good quality and durable window frame material for replacement.

2. Reinstallation and fixation: Reinstall the window to ensure that it is firm and reliable, and use appropriate expansion bolts and other fasteners.

3. Repair the wall: If there is a problem with the wall, reinforce and repair the wall first.

4. Increase the support: According to the actual situation, consider increasing the support structure under the window to enhance the stability.

5. Do a good job of sealing and waterproofing: During installation or maintenance, do a good job of sealing and waterproofing between the window frame and the wall to prevent further rain erosion.

When dealing with it, it is suggested to find professional construction personnel to operate it to ensure the construction quality and safety.