Bathroom leaking to the floor below? Water seeping through tile joints and damaging your ceiling? Ace Plumber Johor Bahru applies professional waterproofing membranes and sealants to stop bathroom leaks permanently — without hacking tiles unless necessary.
Malaysia's humid climate and heavy rain accelerate waterproofing failures. These are the issues we fix every week across Johor Bahru.
Brown or yellowish stains on the ceiling below your toilet are a clear sign of failed waterproofing. Water is seeping through the floor slab every time you shower.
Grout between floor and wall tiles cracks over time from building settlement and temperature changes. Water penetrates through these gaps and reaches the slab below.
The original waterproof layer applied during construction degrades after 8-15 years. Once it fails, water passes freely through the concrete slab with every shower use.
Where pipes pass through the bathroom floor slab, the seal around them often fails. This is one of the most common leak points, especially around toilet waste pipes and shower drains.
The junction where bathroom walls meet the floor is a high-risk zone. If the waterproofing membrane wasn't turned up the wall during construction, water will seep at this joint.
Persistent damp patches on the bathroom floor that never dry out, even when the bathroom isn't in use. This indicates water is trapped beneath tiles due to poor drainage slope or membrane failure.
We diagnose the leak source first, then fix it properly.
Send photos of the leak damage — ceiling stains, damp walls, or wet floors. We'll assess the likely cause and schedule a site visit.
Our plumber conducts a water test to pinpoint the leak source. We then recommend the right waterproofing method and give you a firm price.
We apply the waterproofing treatment, allow proper curing time, and flood-test the bathroom to confirm the leak is fully stopped.
Many contractors paint over ceiling stains or re-grout tiles without addressing the actual waterproof membrane failure underneath. That's why the leak comes back within months. We trace every leak to its source — whether it's a failed membrane, pipe penetration, or floor-wall junction — and apply the correct waterproofing system. We use cementitious coatings, liquid membranes, and polyurethane sealants depending on the specific situation.
For many cases, we can apply waterproofing without removing your existing tiles. We use injection grouting and surface-applied membranes that seal from above — saving you time, mess, and money.
After every waterproofing job, we plug the drain and flood the bathroom floor for 24-48 hours to confirm the treatment holds. We don't leave until the test passes.
We stand behind our waterproofing work. Depending on the method used, our treatments come with a warranty of up to 5 years. If it leaks again, we fix it at no extra charge.
We only use proven, professional-grade waterproofing products from established manufacturers.
We select the product based on your specific leak condition. Every product we use is professional-grade.
Hear from customers who have used our plumbing services in JB.
"Our downstairs ceiling had brown stains from the upstairs bathroom. They hacked the bathroom floor, applied a proper membrane, and retiled everything. Six months later — completely dry."
"Water was seeping through the grout lines in our shower area into the bedroom wall. They re-waterproofed the entire wet area and the dampness is completely gone now."
"We had the master bathroom waterproofed during renovation. The team applied Sika membrane with a 5-year warranty. Workmanship was neat and they cleaned up after themselves."
Real jobs completed by our plumbing team across Johor Bahru.
Bathroom leaks get worse over time and cause structural damage to your property. Don't wait until the ceiling collapses — act on these early warning signs.
Report Your LeakYellow-brown patches or peeling paint on the ceiling directly below your bathroom is the most obvious sign. Water is passing through the floor slab every time someone showers.
Fix urgently — structural riskA persistent musty odour even after cleaning indicates trapped moisture behind tiles or under the floor screed. This is a breeding ground for mould and bacteria.
Fix soon — health hazardWhen you tap bathroom tiles and they sound hollow, water has likely seeped under the tiles and loosened the adhesive bond. The tiles may eventually lift or crack.
Fix soon — tiles will crackBlackened grout lines or grout that crumbles when touched means water is constantly penetrating the joints. Re-grouting alone won't fix it if the membrane has failed.
Fix soon — leak worseningWater finding its way through electrical fittings in the ceiling below is extremely dangerous. This is an electrical hazard that needs immediate waterproofing attention.
Fix immediately — safety riskWe believe in honest pricing. Here's how it works.
Waterproofing cost depends on bathroom size, leak severity, and whether tiles need to be removed. The price we quote covers everything — materials, labour, flood testing, and cleanup. Simple grout sealing costs less than a full membrane re-coat, and we'll recommend only what's needed.
Ask for a QuoteWe provide waterproofing services across all major areas in JB.
Common questions from customers in Johor Bahru about bathroom waterproofing.
Ask Us DirectlyWhatsApp us photos of the leak damage and we'll assess the situation. No obligation, inspection schedule — just reliable waterproofing that lasts.