Does the bathroom of the frame building have to be waterproof before waterproofing?

It must be done waterproofing before installing floor heating, if the floor heating is installed, the waterproofing is not done, then there is a problem and the floor heating needs to be removed and sorted out.

If it's not a big deal, forget it!

This resolutely does not work, you must wait for the waterproof layer to completely dry, and then carry out a closed water test to ensure that there is no leakage, before you can start tiling, and in the process of tiling, you must ensure that there is no damage to the waterproof layer. The so-called closed water test refers to the toilet waterproof layer is completed and dry, the floor drain on the bathroom floor, the nozzle and other drainable pipes are sealed with tape to ensure that there will be no water leakage, and the water surface of the bathroom begins to release water, the height of the control principle is that the water surface must be higher than the upper mouth surface of the floor drain and must ensure that the floor of the bathroom can be immersed in water, so that you can see whether there is a leakage problem in the bathroom downstairs, and the water storage time is at least 24 hours or more.

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