Cause 1: defects in structural design of aluminum doors and windows or selection of profiles 

　　原因2:領導風面,雨水清洗表面,防止滲漏,防止漏考慮不足,過分強調采光和通風的需要,”波窗口,落地窗,通過一個窗口”等墻體改變門窗大量出現,不注意建筑防水、導致其雨水泄漏越來越突出的問題; 

　　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;

 　　原因三:設計文件不完整或沒有進行結構設計，導致鎖點不足或鋁門窗材料結構強度和撓度不能滿足要求，導致塑性變形在正常風壓、拉伸或破壞及雨水滲漏;

 　　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; 　

  　原因四:對型材的選擇簡單適用，導致型材不匹配或裝配松動或截面水堵高度不夠，造成直接滲漏;在外觀上過分注重線條裝飾，造成門窗型材接縫、墻角過多而導致堵塞缺陷的拼縫。

 　　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. 

　　所以,我們也可以發現這種情況的原因,因為我們購買的產品質量不好,設計不合理,就會出現這種情況,所以建議:買書的門的時候,可以選擇一些大、口碑良好的濟南卷簾門制造商,質量可以保證,售后服務也很好!

 　　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!