Do I have to inform the property to waterproof the toilet again?

Re-waterproofing needs to inform the property.

Inform the property that the property will contact the downstairs owner or until the downstairs owner is contacted, and then the upstairs owner, the property, the upstairs owner and the construction party will go upstairs to observe whether the downstairs roof is leaking. If there is no water leakage, it will be regarded as a joint, and then sign the qualified certificate of waterproof and closed water in the property bathroom. Therefore, there is no special requirement for waterproofing the bathroom in the season. It is recommended that the temperature be controlled between 5 and 35 degrees. Because if the temperature is too high and the drying speed is too fast, it is easy to produce tiny cracks. On the other hand, if the temperature is too low, it will not be easy to completely dry, which will prolong the construction period and affect the later construction process.