What if there is a leak upstairs and insists that the property has been tested and closed?

Protect the scene and collect evidence by taking photos and recording. It is suggested that the property and the upstairs negotiate to solve the problem, and the other party will definitely bear the liability for compensation.

Closed water test is also called water storage test. To be filled with water, water should have enough volume. The water storage depth of the water storage test is not less than 20mm, the water storage height is generally 30 ~ 40mm, and the water storage time is not less than 24 hours. Move downstairs and observe whether the roof downstairs leaks. If there is no water leakage, it is considered qualified.