Technical CANLON | Wind Is Coming: a 5-Minute Guide To Wind Uplift Testing

With the country's urbanization process, some large public buildings in China generally use metal roofing system. Due to the rapid development speed, so that the metal roofing system has some defects in materials, construction and management, resulting in accidents such as uplift and leakage in windy and rainy weather, even some landmark buildings such as large stadiums, airports, railway stations, etc. are difficult to escape this kind of accidents.

In order to avoid accidents, we need to carry out some tests to verify the wind uplift performance of metal roofing systems, providing a reliable basis and a guarantee of safety for these buildings . Wind uplift testing is the direct assessment of the overall structural performance of the metal roofing system, which is closely related to the building life.

In the early days of wind uplift testing, sandbags or water straps were used for loading, which was less uniform and did not provide a positive pressure and did not simulate the negative pressure of wind loads well enough to make an accurate assessment of the wind uplift performance of the specimen.

It is now possible to establish standardised laboratory to simulate wind loading conditions, apply wind loads to the test specimens, load the system several times in cycles, simulate the wind conditions of the metal roofing system under different conditions, and assess the overall changes in the deformation and the connection and fixation of the test specimens during the test, in order to determine the wind uplift performance of the test specimens.

In general, the metal roofing system to be tested should include metal roof panels, base plates, bearings, insulation, purlins, brackets, fasteners, etc. The materials, processing and quality of the roofing system to be tested should be consistent with the actual engineering situation and should meet the requirements of the corresponding codes and standard. The wind uplift performance of the metal roofing system should use laboratory simulation of static and dynamic pressure and other loading methods, and strive to achieve comprehensive and accurate result.

In order to better ensure the wind uplift performance of single-ply membrane roofing systems, the Canlon Institute of Advanced Technology has set up the only wind uplift testing laboratory among domestic waterproofing material manufacturers, to test, verify and improve the air and water tightness and wind uplift performance of roofing systems, which can greatly enhance the reliability of roofing system design. After testing, the wind uplift index of TPO/PVC roofing membranes produced by CANLON has reached 11.5KPa/9.3KPa (equivalent to the wind pressure brought by a 17-step typhoon) respectively, and the exposed service life can reach more than 25 years, far exceeding the national standard.

The gale is coming, CANLON will be your choice. You deserve a more reliable single-ply membrane roofing system!

In addition to this, Our high quality products include polyurethane waterproof coating for roofing, HDPE pre-applied membrane and many more, each of which has undergone a rigorous process. Keep your eyes on CANLON!