Waterproofing
How much does bathroom waterproofing cost in Singapore?
Waterproofing is one of those jobs where the price you’re quoted can vary enormously — and where the cheapest option often turns out to be the most expensive in the long run. This guide explains what drives the cost of waterproofing a bathroom in Singapore, typical price ranges, and how to avoid paying for the same work twice.
Key takeaways
- Cost depends mainly on the area, the extent of the failure, and whether tiles are hacked.
- A targeted repair costs far less than a full strip‑and‑re‑membrane.
- The most expensive job is the one that fails and has to be redone — value beats the lowest quote.
- Always get an on‑site assessment; every case differs.
Typical waterproofing costs in Singapore
| Type of job | Indicative range (SGD) |
|---|---|
| Targeted leak treatment (localised) | $400 – $900 |
| Full bathroom re‑waterproofing (hack + membrane + re‑tile) | $1,500 – $3,500+ |
| Balcony / planter box | $600 – $1,800 |
Indicative ranges only — actual cost depends on your bathroom’s size, condition and scope. Get a free quote for exact pricing.
What affects the cost
- Area size — a compact HDB bathroom vs. a larger or multiple bathrooms.
- Extent — targeted repair vs. treating the whole floor.
- Hacking & re‑tiling — removing tiles to reach the membrane adds hacking, disposal and re‑tiling.
- Type of space — bathrooms, balconies and planter boxes differ in detailing.
- Reinstatement — new tiles and making good the finish.
How to avoid paying twice
The most expensive waterproofing is the one that fails. Cheap patch jobs that don’t address the source often leak again within months — and by then the water may have spread. A proper diagnosis, a quality warrantied membrane, and correct detailing at kerbs, traps and pipe penetrations cost a little more up front and far less over time.
Frequently asked questions
Do I need to hack the whole floor? Not always — targeted treatment is sometimes enough; a proper assessment tells you.
Is it cheaper during a renovation? Often, since the floor may already be hacked and access is easier.
Does the warranty matter? Yes — because the membrane is hidden, a workmanship warranty is your assurance it was done right.
Can I just seal the grout instead? No — grout sealing is cosmetic and won’t replace a failed membrane.
The bottom line
Waterproofing cost comes down to area, extent and whether tiling is involved — but value matters more than the lowest number. A properly diagnosed, warrantied job protects your home and saves you from paying twice.
Ready to sort it out? See our waterproofing service, and read the 5 signs your bathroom needs re‑waterproofing. Get a free assessment today.
