Leaking is definitely one of the most frustrating & annoying problems!
Some of the more common leaking problems are:
1. Water Outlet & Wall Area (between the floor & wall)
Cause
Poor waterproofing - not properly covered thus certain areas are missed out
Solution
Redo the water proofing using the right method**!
2. Wall Area (above ground)
Cause
Pipe broke!
Solution
Very Messy!
Hack wall & wall tiles, change the pipe & re-tile!
**The right method of water proofing
Proper proofing should use proper waterproofing adhesive. Waterproofing should apply to 1ft above ground level & it should be fully applied to the water outlet area
NOTE: bargaining in renovation price may reduce the quality & quantity of materials used