Is it normal for the toilet to close the water test for 80 hours and drop 9mm?

After the bathroom is waterproofed, it needs to be thoroughly dried, so that it can do the closed water test, you can contact the residents downstairs in advance, so that the leakage can be informed in time to avoid unnecessary losses of the downstairs residents When doing the closed water test, the depth of water storage can not be less than 20 cm, and the time can not be less than 72 hours, and the water level does not fall is qualified.

After the waterproofing is done to do the closed water test, after the Chenguang JS waterproof coating is done, it is necessary to wait for the coating film to be completely dry (about 24 hours), block the drain for water storage, the water storage depth should not be less than 20mm, the water storage time is 24 hours, and the water has no obvious drop to be qualified.

The bathroom must do a closed water test, because it is easy to cause water leakage if the waterproof is not done well. If you live downstairs, you will be unlucky. The closed water test should generally be done after doing a good job of waterproofing, and now the floor tiles are pasted and then done, if the water leaks, the floor tiles can only be dug up. >>>More

It is also possible that there is leakage around the toilet, showerhead, floor drain or sink drain, and there is a problem in these places, even if the waterproof is done, it is still useless. Check first to see if there are any problems in these places, and whether the ground has a reserved slope.

At the beginning of the closed water experiment, it is necessary to notify the residents of the lower floor, and there is no need to notify the lower floor; When the water level drops, the first part needs to go to the downstairs residents or the downstairs floor to check whether the top surface of the bathroom is leaking or damp, if not, this item can be ruled out; The second is to check whether the water is lost due to floor drains or sewage pipes that are not blocked; Third, check whether the windows are closed, there is no air flow through, or the weather is very hot and dry, etc., if these reasons are too large, the water will evaporate and the water level will drop.