My bathroom floor slab cracked and caused water leakage, and I urgently found a professional waterpr

This problem is indeed difficult to define, if it is a waterproof problem, according to the requirements of relevant laws and regulations, the bathroom waterproof posture is 5 years, that is to say, you can find the construction unit for water leakage within five years, but it is still necessary to see if the upstairs decoration process has destroyed the original waterproofing. If it is not a waterproof problem, it is a crack in the floor slab, it is a structural problem, the structural warranty period is the design life, the general residence is 50 years, if the construction unit does not care, you can complain to the quality department of the construction committee where the house is located, and provide relevant pictures and video data to prove the documents, and the construction committee will talk to the construction unit to deal with it. This question depends on the situation, I hope it can help you!

I can't rule out a certain reason,,, and there is a broken pipe.

You can also do the upstairs bathroom waterproofing downstairs, but it will be a little aggrieved, so let's find a way to block him.

The waterproof sealing effect of the bathroom floor slab is relatively good, and the key to dealing with the problem of water leakage is to accurately find out the leakage point. The leakage point mostly occurs in the upper and lower water pipes, the junction of the floor drain and the floor slab, clean it up after finding the leakage point (the cleaning range is larger than the leakage range) and make it dry, and seal it with sealant. It is better to work from the floor slab, or from the roof if it is not convenient. >>>More

This one is waterproof.

Or do it waterproof on the outside. >>>More