Voted top waterproofing contractor & specialist in Singapore

Waterproofing Contractor in Singapore That Fixes Leaks at the Source

Waffen Waterproofing traces where the water is coming from, repairs it with our 3-5 coat system, and backs the work with a 12 months warranty. For HDB flats, condos, landed homes and commercial buildings.

Free Onsite Inspection at Your Doorstep

Tell us where the leak is. We will call you back to arrange a visit.

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What we do

Waterproofing, Leak Repair and Making-Good Works From One Contractor

Most leak jobs need more than a membrane. Waffen handles the diagnosis, the waterproofing and the tiling or painting afterwards, so you deal with one team from start to finish.

Waterproofing

New and replacement waterproofing for wet areas indoors and exposed areas outdoors.

Water Leakage Repair

For leaks that are already showing. We find the entry point first, then repair it.

Other Services

The supporting works that finish the job properly, also available on their own.

Leaks are more complex than they look

We Diagnose the Root Cause of Your Water Leakage

The stain on your ceiling is rarely where the water gets in.

Water travels along slabs, pipes and wall cavities before it shows. A patch over the visible mark often fails within months because the entry point was never treated. That is why the same leak keeps coming back.

Our inspection looks at the usual sources below before we recommend any repair.

Pipe penetrations Roof leakage Ceiling leakage Basement leakage Windows and walls Balcony leakage Toilet leakage Cracks and joints

Our specialty

The Waffen 3-5 Coat Waterproofing System

Our new and improved system builds the waterproofing up in layers, up to five coats, instead of relying on one thick application. It is applied by our own trained team for long-lasting results in Singapore homes.

Suited to Singapore’s heat
Cost-effective and made for hot, wet weather.

No hacking needed
Applied over the existing surface in suitable cases, so there is less dust, noise and downtime.

HDB approved
Accepted for use in HDB flats.

We keep the quality and bring the cost down

Our past works speak volumes

Some of Our Past Works

Licences and accreditations

A Licensed, Accredited Waterproofing Specialist

Waterproofing in Singapore is regulated work. These are the registrations Waffen holds, so you know who is working on your home.

BCA registered (CR13)

Registered with the Building and Construction Authority under CR13, Waterproofing and Installation.

HDB licensed contractor

Holds a valid HDB licence, so waterproofing works in HDB flats are done by an authorised contractor.

bizSAFE Level 3

Awarded bizSAFE Level 3 for workplace safety. Every job is run safety first.

Qualified technical personnel

Supervisors and workers attend ongoing practical training and courses from BCA and BCA-approved training centres.

Our offer

Claim a Free Onsite Waterproofing Inspection

Before you pay for anything, you will know what is causing the leak, what it takes to fix it and what it will cost. The inspection is free and there is no obligation to proceed.

What is included

Free onsite inspection by a project lead
Root cause identified before any repair is proposed
Detailed, transparent quote with inclusions and exclusions
Surface preparation, debris removal and clean-up
12 months warranty on completed works

Warranty terms and conditions apply.

What You Will Get From The Inspection

How we make sure you get the most cost-effective solution for your home in the long run.

Precise on-site assessment

Comes with a detailed, transparent quote that sets out the tasks to be done, the solution to be applied, the areas included and the areas excluded. You see the full scope before you decide.

The most cost-effective option

Once the root cause is found, we recommend the most practical repair. The aim is to solve the leak at its source and avoid unnecessary work, while giving your home a long-term fix.

Full preparation and implementation

When you confirm, our team carries out the works. This can include surface preparation, debris removal, application of the waterproofing system and a proper clean-up when the job is done.

The Difference In Engaging Waffen To Solve Your Leakage Issues

A leak that is patched and a leak that is solved can look the same on day one. The difference shows up months later.

	Typical quick-fix repair	Waffen Waterproofing
Diagnosis	Patches the visible stain or crack	Traces the leak to its source before any work is proposed
Inspection	Estimate over the phone, or a chargeable site visit	Free onsite inspection by a project lead
Quote	Lump sum with an unclear scope	Itemised quote listing tasks, solution, areas included and excluded
Method	One product used for every job	3-5 coat system matched to the surface, non-hacking where suitable
Scope of work	Stops at sealing. Tiling and painting are left to you	Hacking, tiling, painting and debris removal handled by one team
Credentials	Licences are not always shown	BCA registered (CR13), HDB licensed, bizSAFE Level 3
After the job	No written warranty	12 months warranty (T&C apply)

Don't take our word for it

What Singapore Property Owners Say About Waffen

Rated 5 out of 5

“We have engaged them for our master bathroom water leakage problems that is already leaking to our neighbour unit below. They came for inspection within short period of notification. Inspection was free of charges, thumbs-up!”

Mark Chan

Rated 5 out of 5

“I’ve tried many other waterproofing contractors, plumbers, whatsoever, Waffen has great experienced staffs that finally solved my ceiling leakage issues”

Sheila Lin Kuoh

Rated 5 out of 5

“Friendly and experienced staffs! Their team is very responsive and they are truthful in their quotation”

Joshua Tan

Rated 5 out of 5

“Highly professional. Reasonable rates. Their workmanship is of good quality”

Ling Xin Koh

Who we help

Who Our Waterproofing Solutions Are For

Different properties leak in different places. This is who we work with and what we usually fix for them.

HDB Homeowners

Ceiling leaks from the flat above, bathroom re-waterproofing during renovation, and damp walls. HDB-licensed, with non-hacking options. See bathroom waterproofing and ceiling leakage repair.

Condo Owners & MCSTs

Inter-floor leaks between units, balconies and planter boxes, plus roofs and other common areas for the estate. See balcony waterproofing and water leakage repair.

Landed Property Owners

Flat roofs and roof terraces, basements, external walls and swimming pools. See roof waterproofing, basement waterproofing and swimming pool waterproofing.

F&B Outlets

Kitchen floors that stay wet all day, floor traps, and leaks into the unit below. See floor waterproofing and epoxy flakes flooring.

Offices & Retail

Ceiling leaks over work areas and shopfronts, seepage at windows and walls, and toilet leaks. See wall leakage repair and toilet leakage repair.

Facility Managers

Roofs, basements, pipe shafts and refuse chambers across commercial and industrial sites, by a BCA-registered, bizSAFE Level 3 contractor. See PU grouting injection and roof leakage repair.

Why Choose Waffen as Your Waterproofing Contractor

Root cause first

We solve the leak at its source instead of covering the symptom.

12 months warranty

Completed works are covered for 12 months (T&C apply).

Detailed onsite inspections

Carried out by a project lead, free of charge.

Licensed for HDB, registered with BCA

CR13 registered, HDB licensed and bizSAFE Level 3.

Experienced workers, responsible management

Trained continuously through BCA-approved courses.

Responsive to enquiries

Call or WhatsApp and a real person replies.

Office: No. 18 Sin Ming Lane, Midview City #06-23, Singapore 573960

Email: info@waffen.com.sg

Consult Waffen Waterproofing Today

Leave your details and we will arrange your free onsite inspection.

From our blog

Waterproofing and Leak Repair Guides for Singapore Homes

Read up before you engage anyone. These guides explain the causes, the options and what to ask a contractor.

Choosing and planning

Waterproofing methods

Leaks and repairs

FAQs

1. What services does Waffen Waterproofing offer?

We work in three areas: waterproofing (bathrooms, balconies, roofs, basements, floors and swimming pools), water leakage repair (ceiling, wall, roof, pipe and toilet leaks) and supporting works such as tiling, painting, PU grouting injection, water pressure testing, demolition and epoxy flakes flooring.

We serve HDB flats, condominiums, private and landed homes, and commercial and industrial properties across Singapore.

2. What affects the price of waterproofing in Singapore?

The price depends mostly on how big the area is, whether tiles need to be hacked, and which waterproofing system the surface needs. Two bathrooms of the same size can cost very differently if one needs hacking and retiling and the other can be treated without hacking.

Factor	Why it changes the price
Size of the area	Material and labour scale with the floor area, plus the wall upstands, kerbs and corners that also need coating.
Hacking or non-hacking	Hacking adds demolition, debris disposal, screeding and new tiles. Non-hacking waterproofing skips these steps where the surface allows it.
Waterproofing system	Cementitious, liquid applied, torch-on membrane and PU grouting injection differ in material cost and number of coats.
Condition of the surface	Cracks, spalling concrete or an old failed membrane have to be repaired or removed before new waterproofing goes on.
Location and access	Roofs, external walls and high areas may need scaffolding or special access. Basements have to resist water pressure from the ground.
Property type	HDB, condo, landed and commercial sites have different approval requirements and permitted working hours.
Making-good works	Retiling, repainting and ceiling repairs after the waterproofing is done.
Testing	Ponding tests and water pressure tests that confirm the area is watertight.

This is why we quote after a free onsite inspection and not over the phone. For a worked example, see how much roof waterproofing costs in Singapore.

3. What is the difference between waterproofing and plumbing works?

Plumbing deals with water inside pipes and fittings. Waterproofing deals with water passing through floors, walls and roofs. A plumber fixes a leaking pipe. A waterproofing contractor stops water from seeping through the structure.

	Plumbing works	Waterproofing works
What it deals with	Pipes, taps, valves, cisterns, traps and drains	Floors, walls, roofs, joints and pipe penetrations
Typical signs	Dripping tap, burst pipe, running cistern, choked drain, drop in water pressure	Ceiling stains below a bathroom, damp or peeling walls, leaks after rain, seepage at a balcony or roof
When the leak shows	Constantly, or whenever a tap or appliance runs	After showers, floor washing or rain
Typical fix	Replace or reseal the pipe, fitting or valve	Membrane or coating, PU grouting injection, sealing of cracks and joints
Who to call	A licensed plumber	A waterproofing contractor

The two overlap where pipes pass through a slab or wall. If you are not sure which one you have, our inspection and water pressure test will tell a pipe leak apart from a waterproofing failure. Read more in how plumbing defects can lead to water leakage.

4. How do I know if I need waterproofing or a leak repair?

Look at where the water shows up and when. The pattern usually points to the cause.

What you see	Likely cause	Where to start
Stain or drip on the ceiling under a bathroom	Failed bathroom waterproofing upstairs, or a pipe leak	Ceiling leakage repair
Leak that appears only after heavy rain	Roof, external wall or window joints	Roof leakage repair
Damp, bubbling or peeling paint on a wall	Seepage through the wall or from the wet area behind it	Wall leakage repair
Water around the toilet bowl or floor trap	Worn seal, or the membrane around the outlet has failed	Toilet leakage repair
Renovating a bathroom, balcony or roof terrace	The old membrane is removed with the tiles	New waterproofing

5. Do you need to hack my tiles to waterproof?

Not always. Where the tiles and screed are still sound, our non-hacking waterproofing treats the area over the existing surface. This means less dust, less noise and a shorter job.

Hacking is needed when the tiles are hollow or cracked, the screed is soaked, or the old membrane has failed across the whole floor. We will tell you which applies after the inspection. More detail in how bad a leak has to be before tiles are hacked.

6. Who pays for a ceiling leak between two HDB flats?

For inter-floor leaks in HDB flats, HDB’s position is that the upper and lower floor flat owners are jointly responsible for the repair. In condominiums, the leak is generally presumed to come from the unit above unless the upstairs owner can show otherwise, and the MCST may be involved if common property is affected.

It helps to have a clear inspection report before you speak to your neighbour. See our guides on HDB ceiling leaks and responsibilities and inter-floor leakage in condos.

7. How long does a waterproofing job take?

It depends on the area and the method. A non-hacking treatment is the quickest. A job with hacking takes longer because it adds demolition, screeding, curing between coats, a ponding test and retiling.

Your quote will state the expected duration and when the area can be used again, so you can plan around it.

8. What warranty do you give?

Completed waterproofing works come with a 12 months warranty (terms and conditions apply). The covered areas are written into your quote, so there is no doubt later about what is included. For HDB owners, our guide on the HDB waterproofing warranty explains what HDB itself covers.

9. Is the onsite inspection really free?

Yes. A project lead visits, assesses the affected area and gives you a detailed quote at no charge. There is no obligation to proceed. To arrange one, send the enquiry form or WhatsApp +65 8668 2282.

10. Can I fix a leak myself with a DIY sealant?

A sealant can hold back a small, obvious gap for a while. It does not fix a failed membrane or a leak that enters somewhere else, and it can hide the problem until the damage is larger. Finding the true source takes experience and the right tests.

If the leak has come back after a DIY repair, it is time for a proper diagnosis. Read should you do DIY waterproofing for where DIY works and where it does not.

11. Which areas of a property need waterproofing?

Any area that is regularly wet or exposed to rain:

Internal wet areas: kitchens, bathrooms and toilets, balconies
External wet areas: roofs, external walls, basements, swimming pools and refuse chambers

Some spots are easy to miss. See hidden areas in your home that also need waterproofing.

Waterproofing Contractor in Singapore That Fixes Leaks at the Source

Free Onsite Inspection at Your Doorstep

Waterproofing, Leak Repair and Making-Good Works From One Contractor

Waterproofing

Water Leakage Repair

Other Services

We Diagnose the Root Cause of Your Water Leakage

The Waffen 3-5 Coat Waterproofing System

We keep the quality and bring the cost down

Some of Our Past Works

A Licensed, Accredited Waterproofing Specialist

BCA registered (CR13)

HDB licensed contractor

bizSAFE Level 3

Qualified technical personnel

Claim a Free Onsite Waterproofing Inspection

What is included

What You Will Get From The Inspection

Precise on-site assessment

The most cost-effective option

Full preparation and implementation

The Difference In Engaging Waffen To Solve Your Leakage Issues

What Singapore Property Owners Say About Waffen

Who Our Waterproofing Solutions Are For

HDB Homeowners

Condo Owners & MCSTs

Landed Property Owners

F&B Outlets

Offices & Retail

Facility Managers

Why Choose Waffen as Your Waterproofing Contractor

Consult Waffen Waterproofing Today

Waterproofing and Leak Repair Guides for Singapore Homes

Choosing and planning

Waterproofing methods

Leaks and repairs

FAQs

1. What services does Waffen Waterproofing offer?

2. What affects the price of waterproofing in Singapore?

3. What is the difference between waterproofing and plumbing works?

4. How do I know if I need waterproofing or a leak repair?

5. Do you need to hack my tiles to waterproof?

6. Who pays for a ceiling leak between two HDB flats?

7. How long does a waterproofing job take?

8. What warranty do you give?

9. Is the onsite inspection really free?

10. Can I fix a leak myself with a DIY sealant?

11. Which areas of a property need waterproofing?

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