Water Leakage in HDB Flats: Causes, Solutions & Prevention Tips

Why Water Leakage Is a Serious Problem in Singapore HDBs

Water leakage can lead to mould growth, structural damage, and neighbour disputes. HDB has strict rules — you are responsible for leaks originating from your unit.

Top Causes of Water Leakage in HDB Flats

1. Failed bathroom waterproofing membrane (most common)
2. Cracked or burst pipes behind walls
3. Leaky toilet bowl or cistern
4. Floor trap overflow from clogged drains
5. Ceiling seepage from upstairs neighbour

How to Identify the Source of a Leak

Step-by-Step Solution for Bathroom Waterproofing Leak

1. Stop using the bathroom for 48 hours
2. Perform a ponding test — fill floor with 2cm water, mark level, check after 24 hours
3. Call a professional if water level drops
4. Remove existing tiles and old membrane
5. Apply new waterproofing membrane (at least 2 coats)
6. Test again before retiling

Cost for bathroom waterproofing: $800 – $2,500 depending on size

Prevention Tips for HDB Homeowners

• Re-do waterproofing every 10–15 years
• Don't drill into bathroom floors or walls without checking pipe layout
• Seal grout lines annually with waterproof sealant
• Install a water heater leakage alarm
• Check your water bill for unexplained spikes

What to Do If Water Is Leaking from Upstairs

1. Politely inform your upstairs neighbour
2. Contact HDB if neighbour is uncooperative
3. Document everything with photos and videos
4. Get a professional assessment from a licensed handyman

Why Choose RB Handyman Service for Leak Detection?

• Non-destructive testing (thermal imaging available)
• HDB-compliant waterproofing materials
• 5-year warranty on waterproofing works
• Fast emergency response (8am–10pm daily)

Don't ignore a leak — it only gets worse (and more expensive).