★★★★★
"Quick to respond, clean work, and they explained what was wrong without jargon. Will call again."
Complete Bathroom & Kitchen Wet Works in Petaling Jaya
Full bathroom and kitchen wet-works renovation combining plumbing and tiling.
Pricing: Quoted after site consultation
5.0 Google Rated
Saujana Damansara Based
Fast Local Dispatch
Plumbing + Construction
Common Problems
Signs You Need Wet Works Help
These are the issues PJ homeowners call us about most often.
New bathroom leaking within a year
The most common cause is a rushed build sequence -- membrane applied over tiles instead of under, or screed not fully cured before tiling begins.
Old bathroom with cracked or stained grout
Cracked grout on bathroom floors is not just cosmetic. Water gets under tiles and causes the screed to soften, leading to loose tiles and eventual leaks below.
Coordinating too many contractors
Managing a plumber, tiler, and waterproofer separately on the same job wastes time and risks each trade blaming the others when something leaks.
Dated fixtures and builder-grade tiles
Bathrooms in older PJ terrace houses still on original 1980s fittings are due an upgrade that covers the full wet-works scope in one go.
Kitchen floor that pools water
A kitchen floor that doesn't drain correctly usually means the floor fall wasn't set during the original screed -- fixing it properly requires a full rework.
Bathroom smell despite regular cleaning
Persistent musty or sewage smells often point to a dried or cracked floor trap, or a poorly sealed gap around the toilet base.
What our wet works service covers in Petaling Jaya
Wet works renovation combines plumbing, waterproofing, screeding and tiling - getting the sequence right is what prevents future leaks. We handle bathroom and kitchen renovations end to end, including waterproof membrane, floor falls, tiling and installing heavy sanitary ware, so you deal with one team instead of coordinating several trades.
The build sequence matters. Screed first, set the falls to drain, then apply the waterproof membrane and let it cure fully. Tile over cured membrane, never the other way round. Most "new bathroom leaks within a year" stories come from this sequence being rushed or reversed.
What's included
- Bathroom and kitchen wet works renovation
- Waterproof membrane and correct tiling sequence
- Concrete screeding and floor falls
- Sanitary ware installation
- One-stop plumbing + construction delivery
How Proper Waterproofing Prevents Costly Leaks
Guan Heng Plumbing & Construction Works is a wet works specialist based in Saujana Damansara, Petaling Jaya. We combine plumbing, waterproofing, screeding, and tiling under one team so homeowners deal with a single contractor for the entire bathroom or kitchen renovation.
Have you ever noticed a suspicious water stain spreading across your downstairs neighbour’s ceiling? That dreaded damp spot is the ultimate test of any residential renovation. Whether you live in a terrace house or condo, the plumbing, electrical wiring, and waterproofing must all work together.
Let’s walk through exactly how to prevent these expensive nightmares together. We regularly see how skipping steps leads to disaster in high-rises across Kota Damansara and Damansara Damai.
The consequences usually show up within just a few months:
- Water constantly pooling in shower corners
- Peeling ceiling paint for the residents below
- Stressful legal disputes with your building management
Families across Petaling Jaya (PJ) and Saujana Damansara often end up paying double to fix these entirely avoidable mistakes. Our approach protects your investment by following a strict, unhurried sequence. You cannot afford to rush the wet works in a tropical climate like Malaysia.
Section 142 of the Strata Management Act 2013 actually presumes the upper floor unit is legally responsible for any inter-floor condo leaks. That legal headache makes proper waterproofing the most critical step of your project. We strip everything back to the bare concrete before laying a fresh screed to set the drainage falls properly.
This foundation ensures water always flows directly to the trap. You will never have to deal with stagnant puddles.
| The Process | A Rushed Job | The Correct Sequence |
|---|---|---|
| Waterproofing | Single coat, tiled immediately | Two coats of SikaTop Seal-109 MY, cured for 48 hours |
| Drainage (Screed) | Flat surface, water pools easily | Precise falls set to guide water instantly to the drain |
| Legal Risk (Condos) | High risk of Section 142 liability | Zero leaks, happy downstairs neighbours |
The secret to a leak-proof finish
The Guan Heng team relies on premium flexible cementitious coatings like SikaTop Seal-109 MY to handle the natural micro-movements in terrace houses, semi-detached homes, and high-rise buildings. The membrane must cure completely for 24 to 48 hours before a single tile is laid. Rushing this curing phase is the most common mistake inexperienced contractors make.
A properly cured membrane forms an impenetrable rubber-like barrier against moisture. We always tile directly over this dried membrane to lock in the protection. Installing the sanitary ware and final connections happens at the very end of the project.
This methodical process takes more time than a quick patch job, but the result speaks for itself. A properly sequenced wet works renovation lasts for decades without a single leak. Reach out to Guan Heng Plumbing to schedule a site visit so we can protect your property today.
Our Wet Works Work
Real on-site examples from Petaling Jaya homes.
Why call us for wet works?
Correct build sequence
Screed, membrane, tile - in the right order, with cure times respected.
Plumbing handled in-house
No subcontracting the plumbing scope. Same team that does the leak repair.
Sanitary ware install included
Toto, Sorento, Johnson Suisse and other brands fitted as part of the build.
One contract, one team
No coordinating between plumber, tiler and waterproofer. We're all of them.
How our wet works process works
1
Site consultation
We visit, understand scope and finishes, and recommend the right approach.
2
Scope and quote
Itemised quote covering plumbing, screed, waterproofing, tiling and fixtures.
3
Build in sequence
Screed → waterproof membrane → tile → fixtures. Done in the right order.
4
Hand over a working room
Tested, sealed, finished - and tidy.
Ready to sort your wet works problem?
On-site inspection, transparent quote, no charges until you approve the work.
Testimonials
What customers say about our wet works
★★★★★
5.0 on Google ★★★★★
"Came on time, gave a fair quote on site, and finished the job tidily the same day. Reliable team."
Got Questions?
Wet Works FAQs
What does 'wet works' actually mean?
It's the trades involving water and cement done together - plumbing, waterproofing, screeding, and tiling. Doing them as one coordinated job is what stops future leaks.
Why does the build sequence matter so much?
Waterproof membrane must go over cured screed and under the tiles. If membrane is skipped, rushed, or applied over tiles, water seeps through grout and screed into the rooms below.
How long does a bathroom renovation take?
Most terrace-house bathroom renovations run a few weeks once stripped, depending on scope and waiting for membrane to cure properly. We schedule realistically.
Can you renovate just one section at a time?
Often yes - but some works must go together. Waterproofing and tiling, for example, can't be split across two visits. We advise what can stage and what must go together.
Do you supply tiles and sanitary ware, or do I buy them?
Either way works. We can supply, or we'll install items you've already bought. We itemise both clearly on the quote.
How much does it cost to renovate a bathroom in Petaling Jaya?
It depends on scope, finishes, and how much hacking is needed. A standard terrace-house bathroom typically costs less than a full condo wet works overhaul. We give an accurate figure (2026 pricing) after a site consultation rather than a rough phone guess that may surprise you later.
What is the most expensive part of a bathroom renovation?
Waterproofing and tiling usually take the biggest share of the budget. The membrane, curing time, and labour to set proper floor falls are what separate a lasting renovation from one that leaks within a year. Fixture and sanitary ware costs vary depending on the brands you choose.
Related services
Roof Waterproofing & Ceiling Leak Repair
Roof waterproofing and ceiling leak repair in Petaling Jaya. PU injection grouting, torch-on membrane and acrylic coating for tiled and concrete roofs.
Fixture Installation
Installation of toilets, sinks, faucets and sanitary ware.
Wall Repair & General Renovation
Crack repair, plastering, skim coat, ceiling repair and minor renovation work in Petaling Jaya.
Helpful Guides
Wet Works guides & advice
Free, practical guides to help you understand your wet works options before you call.
Waterproofing and Tiling Sequence for Wet Areas
The right sequence — screed, waterproof membrane, then tiling — is what stops bathroom leaks. Learn the correct order and why it matters.
Read guideWhat Wet Works Renovation Involves
Wet works renovation combines plumbing, waterproofing, screeding and tiling. Learn what it covers, where it applies, and why integrated trades matter.
Read guideRenovating a Terrace House Bathroom: What to Budget
What drives bathroom renovation cost in a Malaysian terrace house — scope, sanitary ware tier and tiling — plus how quotes are scoped on site.
Read guide
Mon–Sat, 8am–6pm
Ready to book wet works?
Professional bathroom & kitchen renovation (wet works) from a local Petaling Jaya team.
Fair on-site pricing
Quality workmanship
Plumbing + construction