Cause 1: defects in structural design of aluminum doors and windows or selection of profiles
Cause 2: lead the wind surface and rain water to clean the surface, prevent leakage, and pay too much attention to the needs of lighting and ventilation. "Wave window, floor window, through a window" and other walls change the appearance of doors and windows, do not pay attention to building waterproof, resulting in the more prominent problem of rain water leakage;
Cause 3: incomplete design documents or no structural design, resulting in insufficient locking points or the structural strength and deflection of aluminum door and window materials can not meet the requirements, resulting in plastic deformation under normal wind pressure, tension or damage, and rainwater leakage;
Reason 4: the selection of profiles is simple and applicable, resulting in profile mismatch or loose assembly or insufficient section water blocking height, resulting in direct leakage; pay too much attention to line decoration in the appearance, resulting in too many joints of door and window profiles, wall corners, resulting in blocking defects.
Therefore, we can also find the reasons for this situation, because the quality of the products we buy is not good and the design is not reasonable, this situation will occur, so it is suggested that: when buying the book door, you can choose some large and well-known manufacturers of Jinan roller shutter door, the quality can be guaranteed, and the after-sales service is also very good!