Why do broken bridge aluminum doors and windows leak?

1. Broken bridge aluminum doors and windows are easy to leak. Why is this?

Broken bridge aluminum doors and windows often leak. The main reason is that the design of the profile drainage system is not reasonable enough and the installation and construction are not in place. Therefore, when the rainwater passes through the Hot glueor between the insulation strip and the glass When the gap penetrates into the profile cavity, it cannot be discharged in time, causing water accumulation. Over time, rainwater will penetrate into the wall through the assembly gaps of the profiles, destroying the indoor decoration effect.

The design principle of the thermal insulation broken bridge aluminum alloy door and window waterproofing system is very Simple, it is the principle of pressure balance. As long as this principle is applied and a set of drainage channels are designed, the problem of rainwater accumulation can be solved structurally and technically. Potential to avoid rainwater seepage Leakage occurs. belowAnalyze the waterproof system design of broken bridge aluminum doors and windows.

2. Node drainage route analysis

On water strips, glass and window sashes The rubber strips in between push a large amount of rainwater away along the outer wall of the profile. A small amount of rainwater penetrates into the profile cavity at the bottom of the glass through the gaps, and a drainage hole is opened in the outer cavity of the profile. This allows a small amount of accumulated water to be discharged to the water collection tank of the window frame along the designed drainage route. Inside. At the same time, the detailed design of the dripping cornice mainly prevents water from flowing along the profile wall into the inner cavity due to the surface tension.

The overlapping portion of the window frame and sash is not sealed; It is open and ventilated to the outside atmosphere to maintain the pressure balance inside and outside the drainage hole where water accumulates, ensuring that rainwater can be discharged to the outdoors along the drainage hole under its own gravity. If the requirements for heat and sound insulation of the doors and windows are relatively high, you can also add tape to seal them, but leave a slit in the upper part of the window to maintain air pressure balance. As for the air pressure balance in the lower cavity of the glass, air pressure balance holes can be opened in the vertical or upper cross-section of the window sash to maintain balance with the outside atmospheric pressure. This ensures that rainwater can be smoothly drained into the water collection tank along the designed drainage route.

In reality, the waterproofing of many plastic steel doors and windows is often just glue. , put a layer of sealant on top of the glass sealing strip to make it waterproof. Authorbelieves that although this method is good, it is not scientific. Under long-term exposure to the sun’s ultraviolet rays, the glue will age and fail, and there will still be water leakage. possible. The scientific approach is to use the principle of pressure balance to reasonably design the cross-sectional structure of the heat-insulating aluminum profile and design it well

Onea complete drainage technology system By always maintaining a balance between internal and external pressure, the possibility of rainwater accumulation can be completely solved from a structural technical point of view, thereby avoiding rainwater leakage and greatly improving the waterproof performance of thermally insulated bridge-broken aluminum alloy doors and windows.

Of course, Broken Bridge AluminumThe machining, assembly and construction accuracy of doors and windows are also very important. The structural design of the waterproof system is also to technically solve the water seepage problem. No matter how good the design is, if the processing and installation accuracy cannot keep up , to no avail. Only with proper design, handling and construction can water seepage through doors and windows be completely avoided.

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