The elevator apartment clean water room bathroom kitchen has been waterproofed, do you need to do wa

.You can backfill it. There is no need for a second waterproofing of the withered envy. Flexible materials. No leakage can be seen within 24 hours. It's okay to do it a second time.

If you don't worry. Because the new house will slow down the foundation after the water is turned off. Causing cracks in the floor slab. Buy some good materials for yourself.

Nowadays, many developers use asphalt to make waterproofing, that is, it is very smelly, or it is used to use the relatively poor general K11 waterproofing, the strength of these waterproofs is only temporary, and it is also dry before the dust is said to have troubles, maybe one day you are unlucky and the water will leak downstairs. But if the developer uses a good waterproof, it's different. Personally, I think that this kind of waterproofing made by the hairdresser of the penitential year, it is best to make the floor of the bathroom waterproof again without knowing the condition of the material, and it will not cost a few dollars.

As long as you don't destroy the original waterproofing layer, it's fine.

After turning off the water. No leakage can be seen within 24 hours. You can backfill it. There is no need for a second waterproofing.

If you don't worry. It's okay to do it a second time. Buy some good materials for yourself. Flexible materials. Because the new house will be the foundation of the lower floor. leads to cracks in the floor slab.

There is basically no problem with no leakage for a week, and you can directly lay bricks.