Top 15 Waterproofing Contractors in Singapore, 2025 Definitive Guide

Why Waterproofing Matters in Singapore

Singapore has an equatorial climate. It has heavy rainfall and high humidity. This makes waterproofing very important for building and maintaining properties. Unresolved issues like water seepage, roof leaks, and damp walls can lead to structural damage. They can also encourage mould growth and lower property value.

A professional waterproofing contractor addresses current problems and takes steps to protect your property long term.

Evaluation Criteria

The contractors featured in this 2025 guide were assessed based on:

• Proven track record and positive client feedback
• BCA registration and industry certifications
• Range of services and technical expertise
• Transparency in pricing, warranties, and after‑service support

List of the best 15 Waterproofing Contractors in Singapore

Featured Contractors

1. Allseal Waterproofing

What They Do

• Roof Waterproofing – RC roofs, metal roofs, and pitched clay tile roofs
• Basement & Wall Seepage Repair – Locating and sealing leak sources with precision
• Commercial & Residential Projects – Tailored solutions for Singapore’s climate
• Quick Leak Repairs – Including pipe leaks and ceiling seepage fixes

Why They Stand Out

• 15+ years of combined expertise in the team
• Hassle-free methods that avoid unnecessary hacking
• Comprehensive warranties for peace of mind
• Customer-first Approach with a strong reputation on Google reviews

📞 You can reach them at +65 8360 1752 or explore their services on Allseal Waterproofing’s official site.

2. Prima Seal Waterproofing

A Singapore-based company specializes in fixing all types of water leaks. This includes toilet ceiling drips, balcony seepage, and roof leaks. They offer both hacking and non-hacking waterproofing methods. This means you can complete repairs with less mess and downtime.

Services They Offer

• Toilet & Bathroom Waterproofing – Ceiling, floor, and wall leak repairs
• Balcony & Roof Waterproofing – Including RC roofs, roof terraces, and metal roofs
• Basement & External Wall Seepage Solutions
• Swimming Pool & Floor Waterproofing

Why They’re Trusted

• BCA-registered CR13 waterproofing contractor and BizSAFE certified
• Free on-site inspection & consultation before work begins
• Use of premium materials like film-forming & crystallising sealers that penetrate deep into concrete
• Fast turnaround — some fixes completed within a day without removing existing tiles

Address: 1090 Lower Delta Road, #03-07T, Singapore 169201

📞 Call/WhatsApp: +65 8241 0032 or +65 6653 7942

Visit Prima Seal Waterproofing’s official site to learn more.

• Specialties: Bathroom and toilet sealing
• Strengths: Minimal disruption during work, free consultation, transparent pricing
• Credentials: BCA registered

3. Le Fong Building Services

Le Fong is a Singapore-based BCA-registered waterproofing and building contractor. They have a strong reputation for fixing roof leaks and doing complex structural repairs. Their mission is to be one of the best waterproofing specialists in the country. They deliver high-quality materials and work at fair prices. They also make sure to meet deadlines.

Core Services

• Waterproofing Solutions – For bathrooms, balconies, RC roofs, swimming pools, and more
• Concrete Repair & Structural Strengthening – Restoring integrity to aging or damaged structures
• Grouting & PU Injection – Sealing cracks and stopping leaks at the source
• Roofing Works – From polycarbonate and glass roofing to roof tile supply, coating, and restoration
• Specialised Access – Rope access works, thermal imaging inspections, and even drone surveys

What Sets Them Apart

• BCA CR13 Waterproofing Installation (L1) certification, valid until Dec 2027
• 24-hour hotline for urgent leak issues
• Offers no-hacking waterproofing methods for minimal disruption
• Handles both residential and commercial projects across Singapore

Address: First Centre, #02-01, 50 Serangoon North Ave 4, Singapore 555856
📞 Hotline: +65 9873 6788
 Visit Le Fong’s official website to learn more

4. SWC Construction Waterproofing

SWC Construction Waterproofing & Landscaping is a trusted contractor in Singapore. They have over 20 years of experience solving water leakage issues that are often hard to see. They work in both public and private sectors. This includes HDB flats, condos, and commercial buildings. They are known for providing custom, long-lasting solutions.

Core Expertise

• Toilet & Bathroom Waterproofing – Fixing ceiling drips, wall seepage, and floor leaks without hacking tiles
• Balcony & Roof Waterproofing – Thermal detection to pinpoint leaks, plus non-hacking repairs for minimal disruption
• Swimming Pool & Basement Waterproofing – Isolating and repairing structural leaks in tricky, high-moisture areas
• PU Injection & Grouting – Filling cracks and voids in concrete slabs, joints, floors, and ceilings to stop seepage
• Urban Landscaping – Integrating waterproofing with outdoor design for functional, weather-resistant spaces

Why They’re Trusted

• BCA & HDB Approved, BizSAFE Level 3 Certified
• 100% track record — fully accountable for every project
• Warranty provided for recurring leaks
• Free on-site inspection with thermal imaging to confirm leak sources before work begins
• Customised solutions — from residential bathrooms to large-scale commercial roofs

Website: SWC Construction official site 📞 Hotline: +65 8754 4058

• Specialties: Advanced leak detection, targeted waterproofing solutions
• Strengths: Offers recurrence warranties for added assurance

5. PJ Roofing & Construction Pte Ltd

PJ Roofing (Singapore) is a well-known BCA-registered roofing and waterproofing expert. They have over 17 years of industry experience. Their deep knowledge enables them to offer innovative, robust, and sustainable roofing solutions for homes and businesses. What makes PJ Roofing special is its unique approach.

They combine traditional craftsmanship with modern expertise for inspection and maintenance. This innovative combination makes sure roofs are built to last. They are also carefully maintained to handle Singapore’s harsh tropical climate. With PJ Roofing, clients can be sure that experienced professionals handle their roofing needs. They are committed to a quality and durability guarantee. Contact Now.

Core Services

• Reroofing & Roof Installation – Upgrading materials, repairing damage, and reinforcing waterproofing for long-term durability
• Roof Leak Repair – Targeted fixes to stop water ingress before it causes structural damage
• Roof Waterproofing – Protecting against heavy rain and humidity with high-grade sealants
• Glass, Aluminium & Polycarbonate Roofing – Stylish, functional options for residential and commercial spaces
• Polycarbonate Awnings – Weather-resistant shading solutions
• Commercial Waterproofing – Large-scale protection for industrial and business properties
• Roof Maintenance – Preventive care to extend roof lifespan

Why They Stand Out

• Strict compliance with safety regulations and industry best practices
• High-grade materials for maximum durability
• Free on-site assessment within 2 hours for emergencies
• Transparent pricing with no hidden costs
• Lifetime warranty on workmanship

Address: 69 Ubi Road 1, #10-32, Oxley Bizhub, Singapore 408731 📞 Phone: +65 9012 1290. Email: info@pjroofing.com / contact.pjroofing@gmail.com 

• Specialties: Roof Waterproofing, PU injection, membrane systems
• Strengths: Fast response, competitive pricing, thorough site cleanup
• Best for: Emergency repairs and preventive maintenance

6. J & K Roof Contractors

J & K Roofing is a well-known, local roofing and exterior contractor in Golden, Colorado. For many years, they have proudly served the Denver Metro, Front Range, and Colorado Springs areas. They have built a strong presence in the community. Their reputation has been built on quality work, reliable service, and a comprehensive approach to every project. They take pride in carefully managing each project. They oversee every detail from the first inspection to the final cleanup. This commitment to excellence makes sure clients get great results. They also enjoy a smooth, stress-free experience throughout the process.

What They Do

• Roof Replacement & Repair – Asphalt shingles, tile, metal, and more
• Hail & Storm Damage Restoration – Insurance claim assistance and fast response after severe weather
• Multifamily & Commercial Roofing – Apartments, condos, HOAs, and business properties
• Windows, Siding & Gutters – Energy‑efficient upgrades and exterior protection
• Solar Solutions – Solar panel and solar roofing shingle installation with design‑to‑completion service

Why They’re Trusted

• Free roof inspections and honest assessments
• Licensed & insured; BBB‑accredited with a long‑standing track record
• One point of contact for the entire project, ensuring smooth communication
• Experienced crews who’ve “seen it all” in Colorado’s challenging weather conditions
• Customer‑first philosophy  aiming for calm after the storm

7. The Roofing Specialist

The Roofing Specialists Inc. is a full-service roofing company. They work on both homes and businesses of all sizes. They can work with many materials. This includes asphalt, fiberglass, cedar shake shingles, flat roofing systems, and sheet metal. They also handle related exterior work. This helps keep properties weather-tight and looking good.

Services They Provide

• Roof Installation & Replacement – Pitched and flat roofs, tailored to building needs
• Roof Repairs – Leak fixes, shingle replacement, flashing repairs
• Flat Roofing Systems – Installation and maintenance for commercial and residential applications
• Sheet Metal Work – Custom flashing, gutters, and architectural details
• Skylight Installation – Adding natural light while maintaining weatherproofing
• Chimney Removal – Safe dismantling and sealing of roof penetrations
• Soffit & Fascia – Protection and ventilation for roof edges
• Seamless Eavestroughs – 5″ gutters fabricated on‑site for a perfect fit

Why They’re Trusted

• Versatility – Skilled in multiple roofing systems and materials
• Customer‑First Approach – “Where Quality Counts & Customers Come 1st” is their motto
• Free Estimates – Helping property owners plan without upfront cost
• Certified Installer Credentials – Ensuring work meets industry standards

8. High Tech Roofing & Waterproofing

High Tech Roofing & Waterproofing Pte Ltd is a Singapore-based company. It specializes in roofing and waterproofing solutions. The company was established in 2016 to meet the needs of both homes and businesses. They are known for their quality work and fast service. They can manage everything from minor leak repairs to complete roof replacements.

Services They Provide

• Roof Tile Replacement & Repair – Restoring cracked, broken, or missing tiles to prevent water ingress
• Roof Leakage Repair – Targeted fixes for common leak points, including flashing, valleys, and joints
• Metal Roofing & Awnings – Fabrication and installation of durable, weather‑resistant metal structures
• Waterproofing Systems – Protective coatings and membranes for RC roofs, balconies, and wet areas
• Preventive Maintenance – Regular inspections to extend the roof’s lifespan and reduce costly repairs

Why They’re Trusted

• Customer‑first Approach — aiming for long‑term solutions, not quick fixes
• Broad service scope — from traditional pitched roofs to modern flat roof systems
• Use of quality materials to withstand Singapore’s heavy rain and humidity
• Recognised in industry listings as one of the more reliable roofing contractors locally.

9. Allstar Waterproofing & Services

Allstar Waterproofing & Services is a Singapore-based specialist in protecting homes, businesses, and industrial spaces from water damage. Established in 2013, they’ve built a strong reputation for delivering high-quality, professional waterproofing and roofing solutions across residential, commercial, and industrial projects.

What They’re Known For

• Comprehensive Services – We offer roof waterproofing for metal, tile, and flat concrete. We also provide wet area protection for bathrooms, balconies, kitchens, and pools. Our services include concrete repair, water leakage fixes, and rope access for hard-to-reach maintenance.
• Expertise & Experience – Over 20 years of industry know‑how, using advanced techniques and proprietary waterproofing membrane systems.
• Trusted Track Record – More than 3,000 homes and businesses served, with a strong base of repeat clients.
• Quality Assurance – Repairs come with a 1‑year warranty, with options to extend for extra peace of mind.
• Free Inspections & Transparent Pricing – They offer no‑cost, detailed evaluations to uncover hidden issues and provide clear, upfront quotations.

Contact & Location

• Address: 10 Admiralty Street, #03‑47 North Link Building, Singapore 757695
• Phone: +65 8828 1913
• Email: enquiry@allstarwaterproofing.com.sg

10. Nano Star

Nano-Star Waterproofing is a company in Singapore specializing in nanotechnology-based surface protection. Their products keep water out while maintaining the original look and breathability of building materials.

How It Works

• Nano-sized particles can penetrate deeply into porous materials such as cement, masonry, and stone. They bond at a tiny level to form a hydrophobic barrier.
• Unlike traditional coatings that sit on the surface, Nano-Star’s treatment goes into the material. This makes it resistant to wear, UV damage, and chemical or mechanical removal.
• Surfaces remain breathable, allowing internal moisture to escape and preventing swelling, cracking, or warping.

Flagship Product NSC Nano Waterproofer

• Water‑based, HDB Material List approved, and SEC Green Label Certified for eco‑friendliness.
• Spray-on application covers 10–15 sqm per litre.
• Suitable for residential, commercial, and industrial use — from bathrooms and balconies to large‑scale concrete structures.
• Lab‑tested to last up to 8 years.

Key Benefits

• Invisible finish — no change to the surface’s appearance or texture.
• Anti‑condensation and thermal insulation properties for added comfort.
• Non‑toxic and safe for humans, pets, and the environment.

Contact

• Address: 32 Defu Lane 10, #04‑16, Singapore 539213
• Phone: +65 9297 1985
• Email: info@nanostar.sg
• Website: Nano‑Star official site

11. Revo Seal

Revo-Seal Waterproofing is a BCA-registered contractor in Singapore. They are known for providing trustworthy waterproofing installation, leak repairs, and seepage solutions for homes and businesses.

What Sets Them Apart

• Wide Service Scope
  We work on new waterproofing projects. We also repair water leaks. Additionally, we provide preventive sealing for wet areas. This includes bathrooms, kitchens, balconies, roofs, and industrial buildings.
• Technical Expertise – Skilled in multiple systems, including acrylic, cementitious, bituminous, epoxy, and polyurethane (PU) membranes, selecting the correct method for each site.
• Health & Structural Protection – Their work helps prevent mould growth, termite infestations, and structural damage caused by excess moisture.
• Proven Track Record – Over 1,000 projects completed across condos, landed homes, and commercial buildings in Singapore.
• Warranty Assurance – Standard 5‑year warranty on most systems, reflecting confidence in durability.
• Prompt Response – Typically replies to enquiries within three working days.

Company Details

• Registered Name: Revo‑Seal Waterproofing Pte. Ltd.
• BCA Workhead: CR13 Waterproofing Installation, Grade L1 (valid until 1 June 2026)
• Address: 10 Anson Road, #10‑11 International Plaza, Singapore 079903
• Phone:

12. M3 Multiservices

M3 Multiservices, also called M3M Services, is a company based in Singapore. They specialize in waterproofing ceilings and roofs. They are known for fixing leaks of all kinds.

What They Offer

• Ceiling Waterproofing – Solutions tailored to the structure’s condition, from tile hacking and re‑screeding to relaying tiles.
• Roof Waterproofing – Expertise across reinforced concrete flat roofs, sloped tiled roofs, metal roofs, glass roofs, and special‑material awnings.
• Pond Waterproofing – Maintenance, liner replacement, resurfacing, sealing, and coating to keep water features leak‑free.
• Painting & Coating – Professional painting for aesthetic and protective purposes, plus re‑painting, coating, and redecoration.
• Specialised Repairs – Concrete repairs, water seepage rectification, polyurethane and epoxy pressure grouting for structural reinforcement.
• General Building Works – Including reinstatement, roof/gutter maintenance, and access solutions like boom lifts and gondolas.

Why They Stand Out

• Free On‑Site Analysis & Consultation – No‑obligation inspections to diagnose the root cause of leaks.
• Latest Waterproofing Technologies – Staying updated with modern systems for long‑lasting results.
• Client‑Centric Approach – Known for quick response times and going the extra mile for customer satisfaction.
• Diverse Clientele – Serving private homeowners, commercial property managers, and industrial facilities.

Company Details

• Address: 65 Chulia Street, OCBC Centre #46‑00, Singapore 049513
• Phone: +65 6917 4966
• Email: services@m3m.com.sg
• Website: M3M Services official site

13. ProSeal Waterproofing

ProSeal Waterproofing is a professional contractor. We specialize in building envelope maintenance, leak prevention, and waterproofing solutions. We serve many commercial and residential properties.

What They’re Known For

• Comprehensive Services – From preliminary inspections to full-scale restoration, they handle roof repairs, façade sealing, balcony and planter box waterproofing, and wet area protection.
• Organised, Professional Approach – Known for their methodical project management, ensuring minimal disruption to occupants while delivering durable results.
• Versatile Applications – Work spans new builds, refurbishments, and remedial projects, including high‑rise buildings, industrial facilities, and strata properties.
• Quality Materials & Techniques – Utilise advanced membrane systems, sealants, and coatings tailored to each site’s needs.
• Preventive Maintenance – Offer ongoing inspection and maintenance programs to extend the lifespan of waterproofing systems.

Company Profile

• Service Area: Primarily operates in Canada, with a focus on commercial property waterproofing.
• Client Base: Property managers, facility maintenance teams, construction contractors, and building owners.
• Approach: Emphasis on long‑term protection rather than short‑term fixes, aiming to reduce costly water damage repairs.

14. HydroSeal Waterproofing

HydroSeal Waterproofing is a name used by many companies and products worldwide. In the building and construction industry, this is usually associated with high-performance waterproofing systems. These systems are used for both commercial and residential purposes.

What They Offer

• Complete Solutions
  We provide:

  • Roof and balcony sealing
  • Wet area protection for bathrooms and kitchens
  • Structural waterproofing for basements, retaining walls, and podium decks
• Specialised Coatings Products like HydroSeal HF and HydroSeal P are flexible membranes. They are high-performance and made for concrete roofs, balconies, and other exposed surfaces.
• Customised Commercial Systems – Tailored waterproofing for offices, warehouses, retail spaces, and civil engineering projects, ensuring long‑term protection against water ingress.
• Residential Expertise – In markets like Singapore, Hydro‑seal Engineering provides full‑service waterproofing for condominiums, landed homes, and other private properties.

Technical Highlights

• Advanced Membrane Technology – Options include liquid‑applied membranes, reinforced flashing systems, and PMMA‑based resins for complex detailing.
• Durability – Many HydroSeal systems are engineered to resist UV exposure, chemical attack, and hydrostatic pressure, making them suitable for harsh environments.
• Versatility – Can be applied to irregular shapes, vertical and horizontal surfaces, and integrated with other building envelope systems.

Typical Applications

• Flat and pitched roofs
• Balconies and terraces
• Bathrooms and wet rooms
• Basement walls and floors
• Planter boxes and podium decks
• Industrial floors and containment areas

15. WaterproofingSG

WaterproofSG is a waterproofing contractor based in Singapore. They provide complete leak prevention and repair services for homes and businesses.

What They’re Known For

• Wide Service Range – We offer waterproofing for basements, bathrooms, and balconies. We also provide sealing for roofs, walls, and foundations. Additionally, we have expansion joint protection and nano-technology waterproofing.
• Structural Repair Expertise – Can restore damaged concrete, fix cracks, and reinforce building integrity while sealing against moisture.
• Specialised Installations – Includes waterproofing membranes, sump pump systems, and swimming pool leak prevention.
• Customer‑Centric Approach – Offers on‑site inspections, tailored solutions, and a focus on long‑term protection.
• Reputation for Reliability – Frequently recommended by homeowners and contractors for dependable results.

How They Work

1. Describe: Client shares the issue and site details.
2. Inspection: The Team assesses the problem areas and recommends the right system.
3. Waterproofing: Application of the chosen solution to meet high durability standards.
4. Final Check: Thorough inspection to ensure all areas are sealed and protected.

Common Waterproofing Methods in Singapore

• Liquid‑applied membranes – Flexible coating applied directly to surfaces
• Torch‑on membranes – Heat‑bonded sheets for roofs
• PU (Polyurethane) injection – For sealing cracks and stopping leaks
• Cementitious coatings – Durable slurry mix for wet areas
• Acrylic & bituminous coatings – UV‑resistant surface protection

Frequently Asked Questions

1. Why is waterproofing critical in Singapore?

High rainfall levels combined with elevated humidity significantly increase the risk of water ingress into buildings and structures. If proper waterproofing measures are not used, it can cause serious problems. These include weak structures, mould growth, and high repair costs that can strain budgets.

2. How can I tell if waterproofing is needed?

Watch for:

• Water stains or damp spots on walls/ceilings
• Peeling paint or bubbling plaster
• Musty odours in enclosed spaces
• Cracks in bathroom or balcony tiles/grout

3. Common waterproofing problems in local homes:

• Roof leaks from aged membranes or cracked tiles
• Bathroom seepage from worn grouting or failed floor membranes
• Balcony/planter leaks from poor drainage
• Rising damp in ground‑floor units
• Façade cracks permitting water ingress

4. How long does waterproofing last?

• Quality membranes: 10–15 years
• PU injection: 5–7 years
• Lifespan can be extended through regular inspections and maintenance.

5. Typical waterproofing costs in Singapore:

• Bathroom: SGD 300–1,500+
• Roof: SGD 1,200–5,000+
• Balcony/planter sealing: SGD 600–2,000+