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No, it's because you didn't do a good job of waterproofing.
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Yes, because the backfill layer leaks.
When to dry and when to do it.
macong85 makes sense, waterproofing should be done before and after backfilling, one on the frontal surface and one on the backwater surface or both on the frontal surface. There is no big difference between sunken toilet waterproofing and ordinary sunken waterproofing.
It must be waterproof first.
1. The bathroom should first plan the installation of the equipment, and use fine sand cement to do a good job of the slope of the water according to the location of the floor drain of the equipment. >>>More
Hello, I'm sorting out the answers based on your questions, please wait a while The caisson is the structural part of your bathroom This must be done first and then waterproof! This will ensure that you will not have water leaks in your home in the future!
After the waterproofing is done, a protective layer should be made, and then the water should be tested, and then the backfill should be done after there is no problem.