Rainwater leakage of aluminum alloy doors and windows in construction projects is the most common and difficult to cure. At the same time, the rainwater leakage phenomenon of aluminum doors and windows is also widespread and similar in other materials and doors, and some are even more severe. Therefore, it is necessary to analyze and deal with the cause of rain leakage of aluminum doors and windows, which not only solves the problem of rain leakage of aluminum doors and windows, but also has the same guiding significance for the rainwater seepage of other types of doors and windows.
Anti-theft window
The main causes of leakage of aluminum doors and windows can be divided into four major categories.
One: In the design process, there are defects in the structure of the doors and windows.
II: Failure to meet quality requirements during processing and installation
Three: The materials and accessories are caused by the disagreement
Four: Caused by improper sealing of the joint of the wall of the cavern.
Leakage caused by one or four items in these four categories is more harmful and difficult to handle. . In addition, there are defects in the building structure itself, which results in the leakage of rainwater at the joints between the doors and windows and the wall of the cavern. However, this is not a leakage problem for doors and windows.
A. The design of the waterproof structure of aluminum doors and windows is unfair, the level of waterproof seal is not enough, and the drainage channels in the aluminum doors and windows structure cavity are not formed. When the rainwater enters the aluminum door and window cavity and enters the room easily due to the difference of the indoor and outdoor wind pressure, the rainwater entering the aluminum door and window cavity can not be smoothly exhausted through the aluminum door and window drainage system and remain in the door and window. Water leaks.
B. The structural strength and rigidity of the aluminum doors and windows fail to meet the requirements of the wind pressure performance of the location of the aluminum doors and windows, resulting in the aluminum rods, windows, the stress rods, hardware fittings, seals and bonding materials under normal wind load. Severe plastic deformation, cracking or damage, etc., resulting in the failure of the seal of the door and window body to produce rain leakage. The reason is that the product fails to accurately calculate and design the strength according to the specifications, and has not passed the physical function testing of the wind pressure before the production and installation.
C. In the process of architectural design, improper selection of aluminum alloy doors and windows is also one of the causes of rainwater leakage from doors and windows. The most common ones are the use of ordinary sliding door aluminum doors and windows for the facades of high-rise buildings or areas with large amounts of rain, and they are not used directly in the structure of aluminum doors and windows or in the structure of the building to take necessary waterproof measures.
D, aluminum doors and windows installed in the field, the assembly size control is not good, resulting in mutual lap seal the position of the misalignment or overlap size is insufficient, or due to pressure enough to have a gap, used to secure the door window frame fastening screws are not closed Sealed by glue, and the surface of sealing part is not cleaned when sealed with sealant.
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