Curtain Wall Performance

The design of unitized curtain wall system has a high technical content, which is directly related to the economy, safety, processability, functionality, construction and maintainability of the curtain wall. However, the system design is very complicated, and it involves many professional knowledge, which will not be described in detail here.

From the process of most curtain wall tests, the unitized curtain wall has problems of varying degrees during the test. Among them, water tightness and air tightness are more prominent problems. It shows that there are certain defects in the design of the curtain wall waterproof system.
The unit panels of the unitized curtain wall are made and assembled in the factory and can be directly installed on the main structure of the building on site. Whether it is plug-in or docking, the unit panels need to be sealed at the top, bottom, left, right and the "cross" interface of the unit panels. How to deal with these free seams in the system design is the key to solving the water tightness of the unitized curtain wall. Since the air pressure difference between the inside and outside of the gap cavity is the main driving force for rainwater leakage, the air pressure in the gap cavity is required to be equal to the outdoor air pressure to prevent the air pressure difference between the inside and outside from pressing rainwater into the cavity.