What are the four-property tests of glass curtain walls?

A good glass curtain wall usually needs to be tested for the “four-property test” of the glass curtain wall. The four key performances of the glass curtain wall system are tested to ensure its safety, durability and functionality. These four tests mainly include:

1. Air tightness test
Purpose: To test the ability of the curtain wall to prevent air infiltration when it is closed, to ensure that the indoor and outdoor air exchange is controllable, and to improve energy saving.
Method: To simulate wind pressure through pressurized equipment and measure whether the air leakage of the curtain wall meets the specifications.

2. Water tightness test (Water Tightness)
Purpose: To verify the waterproof performance of the curtain wall under the simultaneous action of wind and rain to prevent rainwater from penetrating into the room.
Method: Use a spray device to simulate rainfall, combined with a pressurized test, to observe whether there is leakage.

3. Wind pressure resistance performance test
Purpose: To evaluate the structural safety and deformation capacity of the curtain wall under wind load, to avoid rupture or falling off due to strong wind.
Method: Gradually apply positive and negative wind pressure to detect the deformation of the curtain wall, whether it is damaged or dysfunctional.

4. In-plane deformation performance test
Purpose: Test the adaptability of the curtain wall under horizontal forces such as earthquakes or wind vibrations to ensure that it can deform with the main structure without damage.
Method: Use mechanical devices to simulate the displacement between floors and observe the deformation and damage of the curtain wall joints and connectors.

Other possible test items: In actual projects, thermal performance (thermal insulation), sound insulation, seismic performance and other tests may be added, but the “four properties” are the core mandatory test items.

These tests are usually completed by professional laboratories or third-party testing agencies and are an important part of the curtain wall project acceptance. If it involves specific projects, the test plan needs to be adjusted in combination with design requirements and local regulations.

The above content is the main content of the four-property test of glass curtain walls brought to you by zhongdong curtain wall. I believe that everyone has a corresponding understanding after reading the above sharing. If you need to know more about glass curtain wall related knowledge, please email: monikachenwall@gmail.com, or call our company’s contact number directly, +86-17727814139, looking forward to cooperating with you.