Quick answer: Got a ceiling stain that keeps spreading? These seven waterproofing companies are the ones that actually show up and fix it. Allseal specialises in no-hacking solutions that won’t wreck your home. Allstar brings over 20 years of experience and free inspections. The Roofing Specialist has been around since 1996. Whether you need a bathroom leak sorted or a full roof overhaul, there’s a steady team here.
When water stains start making your place look neglected, you want a fix that lasts. The right waterproofing company protects your home’s appeal and stops small leaks from turning into major renovation dramas. This list focuses on specialists who handle everything from no-hack bathroom repairs to full roof overhauls, so you can get the job done without unnecessary mess or delay.
Best Cleaning, Repairs & Handyman in Singapore holds 21 guides in this category, if you want to see what else is out there.
Allseal Waterproofing
Allseal Waterproofing has been solving Singapore’s soggiest problems for a decade, picking up the No.1 spot on Smart Singa along the way. They do RC roof waterproofing, metal roof, and pitch-clay tiles, but the thing that really makes them stand out is their no-hacking approach—you won’t come home to a demolished bathroom. Their work covers ceiling leakage repair, bathroom water leakage, balcony waterproofing, wall seepage, interior-exterior painting, rope access jobs, and even swimming pool leaks. The whole idea is precision with as little disruption as possible.
If the thought of demolition dust makes you cringe, Allseal’s no-hack method is a relief. You can get that stubborn ceiling leak or bathroom seepage sorted while your daily routine stays intact. It’s a solid choice when you want the problem gone without your home feeling like a construction site for weeks.
Address: Blk 215 Ang Mo Kio Ave 1 #01-893, Singapore 560215
Phone: +65 8360 1752
Price: Call for a quote
Allseal Waterproofing
Ideal for the homeowner who wants a thorough fix but dreads the mess. If your ceiling already has a water stain the size of a dinner plate, they’ll handle it without turning your living room into a construction site.
Prima Seal Waterproofing
Prima Seal Waterproofing gets straight to the point when a leak is driving you up the wall. They’re a BCA-registered CR13 contractor and BizSAFE Level 3 certified, so you know they take safety and standards seriously. Their key offerings are toilet and bathroom waterproofing, flood infusion treatment, PU grouting and injection, water pipe leakage repair, and hacking waterproofing. What’s good is how fast they work—the injection methods seal leaks from the inside without tearing out half your tiles.
When a leak is driving you up the wall and you need it fixed fast without compromising safety, this team’s certification and quick turnaround make the decision easy. Their approach suits busy households that can’t afford days of disruption—expect a swift, professional operation that gets your bathroom back in order sooner than you’d think.
Address: 1090 Lower Delta Road #03-07, Singapore 169201
Phone: +65 6653 7942
Hours: Monday–Saturday 9am–6pm
Price: Call for a quote
Prima Seal Waterproofing
This one suits you if you want a team that can handle both residential and commercial spaces and you value the peace of mind that comes with proper BCA credentials. The moment you spot water pooling under the sink or a damp patch on the wall, they’ll come over with PU grouting that seals things from the inside out.
No one bought a spot on this list. If we have overlooked you, say so and we will consider it next time round.
Le Fong Building Services
Le Fong Building Services is a BCA-registered player that puts quality materials and timely delivery at the front of the queue. They do comprehensive waterproofing and something slightly rare: eco-friendly roofing solutions. On top of that, they handle burst pipe repairs, irrigation system fixes, and they’ll even do a free inspection so you know what you’re dealing with before spending a cent.
If you’re the type who likes to know exactly what you’re dealing with before committing, that complimentary inspection is a smart first step. Le Fong’s eco-friendly roofing also appeals if you’re trying to make your home greener while sorting out leaks. They’re a sensible pick when you want transparency and a broader service range beyond just waterproofing.
Address: 50 Serangoon North Ave 4 #09-02 First Centre, Singapore 555856
Phone: +65 8333 7667
Price: Free inspection, then a quote
Le Fong Building Services
For the eco-conscious homeowner or someone managing an older property with quirky pipework, Le Fong is worth a call. Their free inspection is a solid start if you’re not even sure what’s leaking—just an honest look, no hard sell.
If you’re also thinking about home security, our list of Elite Security Companies in Singapore for Discerning Clients might come in handy.
Allstar Waterproofing Services
Allstar Waterproofing Services has clocked over 20 years in the game, covering more than 3,000 properties. They are BCA-certified, bizSAFE3, and use IRATA-certified rope access technicians for high spots that a ladder just can’t reach. Their service list is long: roof waterproofing for metal, tile, and flat concrete roofs; hacking and non-hacking wet-area fixes for bathrooms, kitchens, balconies and swimming pools; concrete repair for spalling and cracks; wall seepage repair; roof maintenance; and high-access works. They throw in free inspections, eco-friendly practices, and warranties.
If your home’s leak is in a spot that’s awkward to reach, Allstar’s IRATA-certified rope access technicians mean you won’t need scaffolding taking over your driveway. That’s a win for landed properties or buildings with high ceilings where conventional access just isn’t practical. Their two-decade track record adds peace of mind.
Address: 7 Mandai Link #05-40 Mandai Connection, Singapore 728653
Phone: +65 8828 1913
Hours: Monday–Sunday 8am–5pm
Price: Free inspection, then a quote
Allstar Waterproofing Services
Great for landed property owners who need someone to check the roof and the walls without rigging up scaffolding. They’ve sorted out over 3,000 homes, so your leak won’t be their first rodeo.
J K Roof Contractors
J K Roof Contractors merges waterproofing with roofing know-how, so if your roof needs more than just a patch-up, they can handle the whole job. They do roof waterproofing, repair, and installation—including aluminium roofs—and they also take on painting for churches, schools, commercial buildings, and private housing. Their work gets noticed for being meticulous and lasting.
If your roof has reached that stage where a simple sealant won’t cut it, J K’s combined roofing and waterproofing expertise means you’re not juggling two separate contractors. Their meticulous finishing also matters when you’re repainting the whole exterior—you’ll get a cohesive, lasting result that keeps your home looking sharp from the curb.
Address: 5 Ang Mo Kio Industrial Park 2A #04-15, Singapore 567760
Phone: +65 9880 5116
Hours: Monday–Friday 9am–8pm
Price: Call for a quote
J K Roof Contractors
If your roof has seen better days and you want a contractor that handles everything from the waterproofing to a fresh coat of paint, J K is a steady choice. Suitable for both residential and commercial projects.
For a spotless home interior after the repairs, have a look at our Cleaning Services in Singapore for Discerning Homeowners.
The Roofing Specialist
Since 1996, The Roofing Specialist has been quietly fixing roofs and waterproofing across the island. Their scope covers roof restoration, awnings and skylights, new roof installation or replacement, RC flat roof waterproofing, roof leakage and wall seepage repair, and painting works. They’ve built a name for competitive pricing and quick, practical solutions, and they’re open daily till 10pm—which is a lifesaver when you’re stuck at work till late.
If you’ve ever tried to coordinate repairs around a 9-to-5 schedule, you’ll appreciate that they’re on call well into the evening. It’s a practical choice for working homeowners who can’t take time off. Their quick, no-fuss solutions mean you can address that drip before it turns into a midnight panic.
Address: 41 Huddington Ave, Singapore 557611
Phone: +65 6346 5493
Hours: 9am–10pm daily
Price: Call for a quote
The Roofing Specialist
Anyone who values a long track record will feel at ease here. The late operating hours mean you can call after work without stress and still get a sensible chat about what your roof needs.
High Tech Roofing Waterproofing
High Tech Roofing Waterproofing comes at complex residential jobs with a guarantee-driven mindset. They do roof leak repair, restoration and concrete repair, waterproofing for corrosion and seepages, structural issues, swimming pools, metal roofing, RC roof waterproofing, wire mesh installation, and gutter cleaning. Their toolbox covers a lot of ground, so you’re not calling multiple contractors for different parts of the problem.
When your home’s water problem feels like a puzzle that spans roof, pool, and structural cracks, having one company that covers all these bases is a relief. High Tech’s guarantee-driven approach gives you confidence that the fix will hold, so you can stop worrying and start enjoying a truly dry, well-maintained property again.
Address: 627A Aljunied Road #01-04 Biztech Centre, Singapore 389842
Phone: +65 8292 6757
Email: [email protected]
Price: Call for a quote
High Tech Roofing Waterproofing
This is for the homeowner who wants a full range of services under one roof—from a tiny seepage behind the cabinet to a full roof overhaul. They’re equipped for both.
No one bought a spot on this list. If we have overlooked you, say so and we will consider it next time round.
How to choose
Not all leaks are the same lah, so your first job is to figure out what you’re dealing with. A bathroom seepage that only appears after a long shower might need a different fix than a flat roof that ponds water after every downpour. Ask yourself whether you can tolerate hacking and retiling, or if you’d prefer no-hacking injection methods—Allseal and Allstar both offer those paths.
Look at certifications and track records. BCA registration and bizSAFE levels tell you the company takes compliance seriously. A free inspection (offered by Le Fong and Allstar) lets you understand the problem and the cost before you commit. For roof work, ask about warranties—a waterproofing job should last years, not months. Get at least two quotes; prices can range from a few hundred dollars for simple sealant work to a few thousand for a full flat-roof membrane, so having a benchmark helps.
| Company | Specialisation | Certifications | Free Inspection | No-Hacking Option |
|---|---|---|---|---|
| Allseal Waterproofing | RC roof, metal roof, pitch-clay tiles, ceiling, bathroom, balcony, swimming pool | Smart Singa No.1 | Check with the business | Yes |
| Prima Seal Waterproofing | Toilet & bathroom, flood infusion, PU grouting, water pipe leakage | BCA CR13, BizSAFE Level 3 | Check with the business | Yes (injection methods) |
| Le Fong Building Services | Comprehensive waterproofing, eco-friendly roofing, burst pipe, irrigation | BCA registered | Yes | Check with the business |
| Allstar Waterproofing Services | Roof, wet areas, concrete repair, high-access works | BCA, BizSAFE3, IRATA certified | Yes | Yes |
| J K Roof Contractors | Roof waterproofing, repair, installation, painting | Not mentioned | Check with the business | Check with the business |
| The Roofing Specialist | Roof restoration, awnings, skylights, installation, waterproofing, painting | Not mentioned | Check with the business | Check with the business |
| High Tech Roofing Waterproofing | Roof leak, restoration, concrete repair, waterproofing, metal roofing, gutter | Not mentioned | Check with the business | Check with the business |
Summary
Whether you’re dealing with a damp living room ceiling or planning a full roof replacement, these seven waterproofing specialists bring different strengths to the table. Allseal and Allstar lead with no-hacking solutions, while Le Fong and The Roofing Specialist offer reliable services with decades of experience behind them. Whichever you pick, ask about warranties and free inspections to get the best value.
Disclaimer: Details can change; please confirm directly with the business.
Frequently asked questions
What is the most common waterproofing issue in Singapore homes?
Ceiling and wall seepage caused by heavy rain or pipe leaks top the list. Bathroom water leakage from ageing waterproofing membranes is another frequent culprit, often showing up as damp patches or peeling paint.
Do I need to hack my walls to fix a leak?
Not always. Several companies on this list, like Allseal and Allstar, offer no-hacking methods using injection or coating techniques that seal leaks from within. If the damage is extensive, hacking and re-waterproofing might still be the longer-lasting route.
How long does a waterproofing treatment typically last?
It depends on the method, materials, and exposure. A well-executed PU grouting or membrane application can last five to ten years or more. Ask the contractor about the specific warranty they provide.
Are these waterproofing companies licensed?
Many hold BCA registration or bizSAFE certifications, which are good indicators of a company that meets local construction and safety standards. Prima Seal and Allstar, for example, show BCA and bizSAFE credentials.
Can I get a free inspection before committing to a repair?
Some, like Le Fong Building Services and Allstar Waterproofing Services, clearly state they offer free inspections. For others, it’s best to call and ask if a site visit comes with a charge.
What should I ask before hiring a waterproofing contractor?
Ask about their experience with your specific type of leak, whether they use BCA-registered workers, what warranty they give, and if they can provide a no-hacking option. Getting at least two quotes helps you compare approach and price.
