Toilet & Bathroom Waterproofing in Penang
Ceiling stains under bathrooms are a common problem in double-storey homes and condos across Penang. Our technician checks the floor trap, pipes and tiles, explains the real cause and quotes on the spot. Inspection and quotation are free in our Penang coverage area, usually within 1 to 3 working days.
Book a free inspection
Bathroom waterproofing re-dos in Penang homes and condos cost RM2,500 – RM6,000 per bathroom.
Common roof problems in Penang
- Broken clay tiles and rotting timber rafters on heritage shophouses let water in.
- Salty sea air corrodes metal gutters, flashing and screws on coastal homes.
- Wind-driven rain on hillside homes enters under tiles and at ridges.
Neighbourhoods we serve in Penang
George Town, Pulau Tikus, Jelutong, Gelugor, Air Itam, Tanjung Tokong, Tanjung Bungah, Batu Ferringhi, Bukit Jambul, Balik Pulau
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
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 is toilet waterproofing in Penang?
In Penang, bathroom waterproofing is indicatively RM2,500 to RM6,000 per bathroom, including hacking and re-tiling, with a 5-year warranty. Your Penang price is confirmed after the free inspection.
Do you waterproof condo bathrooms in Penang?
Yes. We waterproof bathrooms in Penang condominiums and apartments, and coordinate with management where needed.
How long will my bathroom in Penang be out of use?
Most bathroom waterproofing jobs in Penang take three to five working days, including a flood test before re-tiling.
Do you cover George Town, Tanjung Bungah and Air Itam?
Yes. Our north team covers Penang Island, including George Town, Pulau Tikus, Jelutong, Gelugor, Air Itam, Tanjung Tokong, Tanjung Bungah, Batu Ferringhi, Bukit Jambul and Balik Pulau. The roof inspection and on-the-spot quotation are free. Book online with your address and photos.
How fast can a roofer come to Penang?
Free inspections on Penang Island are usually arranged within 1–3 working days. During heavy storm periods, slots fill faster, so book early. For condos, check with your JMB or MC first, as roofs and common areas are usually their responsibility under the Strata Management Act 2013.
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.
Other roofing services in Penang
Nearby areas
Bukit Mertajam, Butterworth, Bayan Lepas, Ipoh, Taiping, Alor Setar