叫MA做就行啊，堵住地漏，然后灌水，看24小时水位下降多少。
BCA QM requirement:
Wet Area Water-tightness test (i.e. Bathrooms, toilets & flat roof)
1) No sign of leakage after ponding wet areas over a minimum
period of 24 hrs.
2) Ponding with the final finish in place

关于质保要看具体的maintenance cert，一般我们会在里面的appendix，有相应的质保周期。