Toilet and Bathroom Waterproofing in Malaysia
Toilet and bathroom waterproofing in Malaysia costs about RM2,500 to RM6,000 per bathroom in 2026, including hacking the old tiles, laying a new waterproofing membrane and re-tiling, with a 5-year warranty. Our technician inspects for free, confirms whether the leak is waterproofing or plumbing, and quotes on the spot. Most jobs take three to five days.
Book a free inspection
A toilet leaking to downstairs is one of the most common leak complaints in Malaysian double-storey terraces, semi-Ds and condominiums. The signs are a damp patch or stain on the ceiling below the bathroom, peeling paint, or water dripping from the ceiling after someone showers. In most cases the waterproofing membrane under the floor tiles has failed, or water is escaping around the floor trap or pipe penetrations.
Our CIDB-registered installation partner re-does bathroom waterproofing properly: hacking down to the slab, laying a new membrane with upturns at the walls, flood testing and re-tiling. We serve the Klang Valley, Johor, Penang, Perak, Kedah, Negeri Sembilan, Melaka and Kuantan. Book a free inspection to confirm the cause first.
Signs your bathroom waterproofing has failed
- Damp patches, stains or dripping on the ceiling directly below the bathroom
- Stains that appear after showering, not after rain
- Cracked or hollow-sounding floor tiles and missing grout
- Damp or peeling paint on walls outside the bathroom door
- Musty smell or mould along the bottom of bathroom walls
How we waterproof a toilet, step by step
A lasting fix means replacing the waterproofing layer, not just sealing the grout. Our site team follows a fixed sequence.
- Inspect and test: check plumbing, floor trap and pipe joints to rule out a pipe leak
- Hack the floor tiles and screed down to the slab, and the lower wall tiles where needed
- Repair the slab, seal pipe penetrations and the floor trap
- Lay the waterproofing membrane on the floor with upturns onto the walls
- Flood test for at least 24 hours to confirm it is watertight
- Screed, re-tile, grout and refit, then hand over with the 5-year warranty
Options: full re-do or targeted repair
Grout sealers and clear coatings sold as quick fixes may slow a minor leak, but they rarely solve a failed membrane. The reliable fix is a full re-do of the floor waterproofing, which is what our price range covers.
If the leak turns out to be a cracked pipe or a loose floor trap, a smaller plumbing repair may be enough. If water is coming through an external wall, PU injection may be needed.
- Full bathroom waterproofing re-do: hacking, membrane, flood test, re-tiling
- Floor trap and pipe penetration sealing: quoted after inspection
- Wall crack PU injection: for cracks letting water through walls
Bathroom waterproofing price in Malaysia (2026 indicative)
The price per bathroom depends on its size, how much wall tiling is removed, the tile choice and access. The range includes hacking and re-tiling. The exact price is confirmed after the free inspection.
Our process: inspection, quote, works, warranty
- Book online with photos of the ceiling stain below and the bathroom above
- We confirm a free inspection with the nearest branch team, usually within 1 to 3 working days
- Our technician confirms whether it is waterproofing or plumbing and quotes on the spot
- You confirm and pay a deposit; the bathroom is out of use for the works
- Balance on completion and the 5-year warranty is issued
When to act, and condo responsibilities
Act as soon as you notice a stain below a bathroom. Water soaking the slab can damage ceiling boards, wiring and, over time, the concrete itself.
In condominiums and apartments, a leak from an upstairs bathroom is generally the upstairs owner's responsibility, while common property belongs to the JMB or MC under the Strata Management Act 2013. Document the leak with photos and inform management early.
Indicative prices (2026)
| Job | Price range | Warranty |
|---|---|---|
| Toilet / bathroom waterproofing (re-do, incl. hacking and re-tiling) | RM2,500 – RM6,000 per bathroom | 5 years |
| Wall crack PU injection | RM25 – RM60 per linear ft | 2 years |
| Roof inspection + on-the-spot quotation | FREE (remote areas RM150) | — |
Indicative ranges in Malaysia. The exact price is confirmed after the free inspection (roof design, pitch, access and damage).
What happens after you book
Tell us the problem
Send your address and a few photos. Tell us if it leaks only when it rains or also when it is dry.
Free inspection
A technician visits within 1–3 working days, water-tests and checks the roof, and shows you the cause.
Quotation on the spot
A clear written quotation. No obligation. Deposit only when you confirm.
Works + warranty
Our site team completes the job and you receive a written workmanship warranty.
Frequently asked questions
How much does toilet waterproofing cost in Malaysia?
Toilet or bathroom waterproofing costs about RM2,500 to RM6,000 per bathroom in 2026, including hacking the old tiles, a new membrane, flood test and re-tiling, with a 5-year warranty. Size, wall tiling removed, tile choice and access affect the price. The exact figure is confirmed after our free inspection.
Why is my toilet leaking to downstairs?
The most common reason is a failed waterproofing membrane under the floor tiles, often around the floor trap, shower area or pipe penetrations. A cracked water pipe or loose floor trap can cause the same stain. A stain that appears after showers, not after rain, points to the bathroom.
Can bathroom waterproofing be done without hacking tiles?
Some products are applied over tiles or into grout and may slow a minor leak, but they rarely fix a failed membrane underneath. For a lasting repair with a 5-year warranty, the tiles and screed are hacked to the slab and a new membrane is laid. Our technician explains the options on site.
How long does toilet waterproofing take?
Most bathroom waterproofing jobs take about three to five working days, including hacking, membrane, a flood test of at least 24 hours, screeding and re-tiling. The bathroom cannot be used during the works, so plan for another bathroom or temporary arrangement.
What warranty comes with bathroom waterproofing?
Our toilet and bathroom waterproofing re-do comes with a 5-year warranty, issued after the works are completed and the balance is paid. The flood test before re-tiling confirms the membrane is watertight before the new tiles go down, so problems are caught while they are still easy to fix.
Who pays when an upstairs toilet leaks in a condo?
Generally, a leak from a bathroom inside a unit is the responsibility of that unit's owner, while common property is the JMB or MC's responsibility under the Strata Management Act 2013. Inform management, take photos, and have the source confirmed so the right party can arrange repairs.
Is it a plumbing leak or a waterproofing leak?
If the stain appears even when nobody uses the bathroom, a pressurised water pipe is likely. If it appears only after showering or flushing, the waterproofing or floor trap is the usual suspect. Our technician checks both during the free inspection before recommending any hacking.
Can I waterproof my bathroom myself?
DIY waterproofing coatings are available, but hacking, membrane detailing at corners and pipes, and flood testing need experience. Most DIY jobs fail at the floor trap or wall junction. A professional re-do includes a flood test of at least 24 hours before re-tiling and comes with a 5-year warranty.
Areas we cover
Klang Valley, Putrajaya, Negeri Sembilan & Melaka
Kuala Lumpur, Petaling Jaya, Shah Alam, Subang Jaya, Puchong, Cheras, Klang, Kajang, Seri Kembangan, Ampang, Kepong, Setia Alam, Cyberjaya, Putrajaya, Rawang, Bangi, Semenyih, Damansara, Bukit Jalil, Sungai Buloh, Seremban, Nilai, Melaka
Johor
Johor Bahru, Skudai, Kulai, Pasir Gudang, Iskandar Puteri, Batu Pahat, Muar, Kluang
Penang, Kedah, Perak & Kuantan
Penang, Bukit Mertajam, Butterworth, Bayan Lepas, Ipoh, Taiping, Alor Setar, Sungai Petani, Kulim, Kuantan
