[China Aluminum Network] 1. Because the civil engineering department and the installation department do not cooperate with each other to manage the lack of finished product protection, the window frame is often deformed to cause leakage, and some projects use thin aluminum alloy window frames, and the rigidity is not enough. It is also easy to cause deformation of the window frame and form a leak. The aluminum alloy or plastic steel door, window frame and reserved hole are not filled and sealed with flexible material. Due to temperature deformation, the connection site will inevitably crack and cause water seepage.
2. The quality of the glass glue caulking is not high, or the glass glue is aged, and the rubber edge rises from the shell. The rain drips into the gap along the edge of the glue and does not achieve the effect of waterproof penetration.
3. Some engineering fixed window glass installations are only fixed with aluminum alloy strips, but are not sealed with glass glue for waterproof treatment.
4. Some aluminum alloy or plastic steel windows do not have waterproof design by themselves. The inner edge plate of the bottom frame of the sliding window is not higher than the outer edge. Under the effect of the wind, water crosses the guide rail top and flows across the inner edge plate into the room.
5. The bottom of the lower frame of some aluminum alloy or plastic steel windows is basically flush with the sill line. The rainwater on the glass windows is all collected in the lower part of the window frame, and is immersed in the room through the interface between the window sill and the lower frame of the window.
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