1. The leak in the bathroom can be tested first, which is usually caused by the imperfect concrete and improper waterproofing of the floor drain pipe. If it is due to this reason, the best way to leak water is to fill the annular groove around the leaking floor drain with cf-2000 cement-based waterproofing agent, and use a press to compact and polish it.
2. If the waterproofing around the floor drain is not done well, it will see water after a long time. Of course, it is not ruled out that the sinking of the house caused problems with the previous waterproof layer. In this case, the solution is to knock out the floor tiles around the floor drain and re-waterproof it.
3. The specific operation steps are as follows: remove the 300mm wide surface layer around the floor drain to the structural layer, and the original waterproof layer should be kept 150mm wide as a reserved lap within the scope of removal; the intersection between the floor drain pipe and the floor slab should be removed, the size is 20mm wide and deep 30mm; clean up the base layer and clean up the floating ash;
4. The floor drain pipe and the floor groove are embedded with sealing paste, and a new waterproof additional layer is constructed on the repaired base surface. The additional waterproof layer needs to be lined with grid cloth, the overlapping width of the grid cloth plane is 150mm, and the inner return width of the floor drain should be 30-50mm. Paint a waterproof layer compatible with the original waterproof layer to ensure that the new waterproof layer is The overlapping width of the original waterproof layer is 150mm, and the overlapping part of the original waterproof layer should be clean and dust-free;
5. When the main parts and waterproof are arranged, the surrounding impurities should be removed. After doing this, you must remember to conduct a water storage test on the floor drain, seal the floor drain, store the water for 24 hours, and observe carefully. Only when there is no leakage can it be regarded as qualified.
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