How should the hanging garden be waterproof? Any suggestions?

To build a roof garden, secondary waterproof treatment must be carried out. First of all, we should check the original waterproof performance: close the water outlet, then pour water, and conduct a strict 96-hour (4 days and 4 nights) closed water test. In the closed water test, the leakage of the room must be carefully observed. Some houses have been closed for three days without water leakage, and began to leak on the fourth day. If no leakage can be guaranteed for 96h, the waterproof effect of the roof is good. This waterproof effect is only applicable to non-roof gardens.

Waterproof layer is the key technical problem to ensure that the roof is watertight, but roof waterproofing and drainage are two aspects, so the drainage system of the roof must be handled well. In the roof garden project, planting ponds, water pools and road sites should be planned and designed according to the original roof drainage system, and the original drains and slopes should not be blocked, isolated or changed. In particular, the drainage pipe under the drainage layer of large planting ponds should cooperate with the roof drainage pipe, and pay attention to the relevant standard deviation, so that the drainage pipe under the drainage layer of planting ponds should cooperate with the roof drainage pipe, and pay attention to the relevant height difference, so that excess irrigation in planting ponds can be discharged smoothly.