With the development of market economy, prefabricated structure building appears. The appearance of this building structure makes the steam turbine workshop of power plant, automobile manufacturing industry, aircraft manufacturing industry, large workshop, various supermarkets and logistics warehouses widely used. The biggest advantages of this kind of building structure are short construction period, light building materials, low foundation requirements, large span, large indoor space and convenient use. But there are also some problems, the main problems are: roof, rivets, cracks in the leakage phenomenon, affecting the normal use.

1、 Repair method for water leakage at joint of prefabricated fire partition board:

1. Small joint repair method:

① 60 wide can be applied at both ends of the joint