The Critical Steps
- →Waterproofing Membrane: Applied after hacking floor
- →Ponding Test: Flooding the toilet for 24-48 hours
- →Screeding: Creating the slope to drain
- →Tiling: Laying the finish
Why Bathrooms Leak
- ✗Rushing the water-ponding test
- ✗Damaging the membrane during piping work
- ✗Insufficient slope (water stagnates)
- ✗Grout deterioration over time
HDB Limitations
ℹ️The 3-Year Ban
In new BTO flats, you CANNOT hack the bathroom wall or floor tiles for the first 3 years. This is to protect the waterproofing warranty provided by HDB's building contractor.