Myself Satya Narayan Tiwari from Pune. I have my flat in an appartment of six flat on first floor.There is no society formed. In my flat there is leakage from the roof of the bed room. Above my flat there is a duplex flat and roof of my flat is the open terrous of the duplex flat. Now due to rain there is heavy leakage in my bed room. The water seepage in the tiles of the terrous resulting in to the leakage in my bed room. I requested for water proofing of terrous to the owner of duplex flat but he is not ready to bear the cost of the waterproofing. May you please advise me who shall bear the cost of this repair bye law?