Bathroom waterproofing price in Singapore
A typical bathroom waterproofing job in Singapore costs $450–$3,800 (per bathroom, depends on method). The exact price depends on what is found on site, and is confirmed with you before any work starts.
Typical price
$450–$3,800per bathroom, depends on methodTypical job time
1 day for injection; about 1–2 weeks for hack and redo
Estimate, confirm on WhatsApp
Price breakdown
| Item | Typical (SGD) |
|---|---|
| Injection repairPer leak point, no hacking | $450–$950 |
| Membrane coating over the existing floor | $500–$2,000 |
| Hack, re-waterproof and re-tile the floor | $1,500–$3,800 |
| Full toilet redoNew tiles, fittings and waterproofing | $5,000–$8,000 |
| Leak detection to confirm the source | $120–$350 |
Ranges are based on public price lists and quotes in Singapore. They are a guide, not an offer.
What changes the price
- Method. Injection treats one spot, while a hack-and-redo replaces the protection across the whole floor.
- Bathroom size, and whether the walls as well as the floor are redone.
- Tile choice, and whether matching tiles are still available.
- Whether the toilet bowl, vanity or shower screen must be removed and refitted.
- Time allowed for membrane curing and a ponding test, which a rushed quote may skip.
What is included
Usually included
- Checking the leak source before quoting
- The agreed waterproofing method for the quoted area
- Ponding test on hack-and-redo jobs
- Clean-up of the work area
Usually extra
- Repairs to the ceiling of the flat below
- New tiles, sanitary fittings or vanity units unless quoted
- Plumbing repairs if a pipe leak is also found
HDB vs condo vs landed
HDB
Most published ranges are for HDB bathrooms. A small common toilet sits at the lower end of each method; a larger master bathroom costs more. If the leak qualifies for HDB's Goodwill Repair Assistance, the repair cost may be shared.
Condo
Often higher, because of larger bathrooms and pricier tiles. Get the managing agent's approval for hacking and keep to the condo's permitted work hours.
Landed
Bathrooms are often larger and spread over several floors, and roof terraces and balconies may need waterproofing too. Expect higher totals.
Bathroom waterproofing price: common questions
Why do waterproofing quotes vary so much?
Published prices disagree widely, partly because firms mean different things by waterproofing. A quote may cover one injection point, a coating over existing tiles, or a full hack and re-tile. Compare the method, the area covered, whether a ponding test is included, and what happens if the leak continues.
Is injection cheaper than hacking in the long run?
Injection costs less and avoids hacking, but it treats the leaking area rather than the whole floor. If the original membrane has failed in several places, leaks can return elsewhere. A hack-and-redo costs more but replaces the protection across the floor.
Should the quote include a ponding test?
For a hack-and-redo, yes. The floor is flooded after the membrane cures and checked for leaks before tiles go down. Ask for it in writing, along with how long the water is left.
More about bathroom waterproofing
Symptoms, causes and what the job involves: Bathroom waterproofing.
- Ceiling leak from upstairs price$450–$3,800
- Water leak detection price$120–$350
- Mould removal price$150–$400
- Concealed pipe leak price$250–$600
- Bathroom flood price$80–$250
Get your bathroom waterproofing price
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