Looking for the best commercial waterproofing experts in Singapore? For businesses in Singapore, a reliable roof is more than just shelter; it’s a critical component safeguarding your valuable assets, operations, and employees. Commercial waterproofing ensures your roof remains a robust barrier against the tropical elements, preventing leaks, water damage, and costly disruptions.
Here at J&K Roof Contractors, we specialize in delivering comprehensive commercial waterproofing solutions tailored to your unique needs. Whether you require a new roof installation, repairs, or preventative maintenance, our team of certified professionals leverages cutting-edge techniques and premium materials to provide:
- Unmatched Leak Protection: We identify and address potential leak points effectively, utilizing proven waterproofing membranes and sealants designed for Singapore’s climate.
- Durability and Longevity: Our solutions are built to withstand the harshest tropical weather, offering long-lasting protection and minimizing the need for frequent repairs or replacements.
- Minimized Downtime: We understand the importance of seamless operations. Our efficient processes and skilled technicians ensure minimal disruption to your business activities.
- Peace of Mind: With our comprehensive warranties and ongoing maintenance programs, you can rest assured your roof is in capable hands, allowing you to focus on running your business.
Why Commercial Waterproofing Matters
Water intrusion is one of the most common and damaging problems for commercial buildings. Left unchecked, it can lead to:
Structural deterioration
Mold growth and poor indoor air quality
Corrosion of steel reinforcement
Slip hazards and tenant complaints
Reduced asset value and increased maintenance costs
Waterproofing isn’t just maintenance — it’s an investment in durability, safety, and long-term cost savings.
Our Commercial Waterproofing Services
- Roof Membrane Installation: We offer a variety of high-performance membranes, including liquid-applied, sheet-applied, and torch-applied options, suitable for diverse roof types and budgets.
- Roof Repair and Maintenance: Our team expertly addresses leaks, cracks, and other vulnerabilities, extending the lifespan of your existing roof.
- Preventive Maintenance: Regular inspections and proactive maintenance help identify and address minor issues before they become major problems.
- Green Roof Solutions: We are committed to sustainability and offer eco-friendly waterproofing options that contribute to energy efficiency and a healthier environment.
Commercial Roof Waterproofing
We provide waterproofing for flat roofs, metal roofs, and rooftop structures using high-performance membranes and coatings that resist ponding water, UV exposure, and thermal movement.
Suitable for:
Office buildings
Factories and warehouses
Shopping malls
Industrial rooftops
Basement & Substructure Waterproofing
Basements and underground carparks are highly vulnerable to groundwater seepage. Our solutions include cementitious coatings, membrane systems, crack injection, and drainage systems to keep underground areas dry and safe.
Suitable for:
Basement carparks
Storage areas
Plant rooms
Waterproofing Materials We Use
| Waterproofing System | Ideal Applications | Key Benefits |
|---|---|---|
| Liquid Waterproofing Membranes | Roofs, terraces | Seamless, flexible, UV-resistant |
| Polyurethane Coatings | High-traffic areas | Durable, crack-bridging |
| Cementitious Waterproofing | Basements, wet areas | Strong adhesion, cost-effective |
| Sheet Membranes | Large roof areas | High durability, puncture-resistant |
| Joint Sealants & Systems | Expansion joints | Flexible, long-lasting seals |
All materials used are commercial-grade and compliant with building standards.
Our Commercial Waterproofing Process
Site Inspection & Condition Assessment
Identify leak sources, substrate condition, and risk areas.System Recommendation & Proposal
Customised waterproofing solution based on building usage and exposure.Surface Preparation
Cleaning, crack repair, rust treatment, and priming.Professional Waterproofing Application
Installed by experienced technicians using approved systems.Final Inspection & Warranty Handover
Quality checks, water testing (where required), and documentation.
Suitable for All Commercial Properties
Our commercial waterproofing services are ideal for:
Office buildings
Industrial factories
Warehouses and logistics hubs
Retail malls and shophouses
Hotels and mixed-use developments
Condominiums and MCST-managed properties
Commercial Waterproofing Pricing
The cost of commercial waterproofing varies depending on the size, condition, and complexity of the building. Each project requires a site inspection to determine the most suitable waterproofing system and scope of work.
Estimated Commercial Waterproofing Costs
| Waterproofing Area | Estimated Price Range* | Notes |
|---|---|---|
| Commercial Roof Waterproofing | From $8 – $15 per sq ft | Depends on roof type, access height & membrane system |
| Basement Waterproofing | From $10 – $18 per sq ft | Includes surface prep & seepage treatment |
| Balcony & Terrace Waterproofing | From $6 – $12 per sq ft | Based on traffic load & coating type |
| Expansion Joint Waterproofing | From $35 per linear metre | Depends on joint width & movement |
| Leak Detection & Repair | From $300 per area | Subject to inspection findings |
*Prices are indicative and subject to site conditions.
What Affects Commercial Waterproofing Cost?
Several factors influence the final price:
Total waterproofing area (sqm / sq ft)
Type of waterproofing system required
Existing damage or leak severity
Building height and accessibility
Surface preparation and repair works
Warranty period and material grade
Larger commercial projects may qualify for bulk or phased pricing.
What’s Included in Our Pricing
✔ Site inspection and technical assessment
✔ Surface preparation and necessary repairs
✔ Commercial-grade waterproofing materials
✔ Professional application by trained technicians
✔ Final inspection and handover
✔ Material and workmanship warranty
No hidden costs. All scopes are clearly defined before work begins.
Why Choose Us to Waterproof Your Commercial Building
- Experience and Expertise: We have a proven track record of delivering successful commercial waterproofing projects for various industries in Singapore.
- Certified Professionals: Our team comprises highly trained and certified technicians dedicated to quality workmanship and safety.
- Commitment to Quality: We use only premium materials and adhere to the highest industry standards to ensure lasting results.
- Competitive Rates and Flexible Solutions: We offer transparent pricing and tailor our solutions to meet your specific budget and requirements.
- Excellent Customer Service: We prioritize open communication and responsive service, ensuring your complete satisfaction throughout the project.
Ready to secure your commercial property with reliable waterproofing? Contact J&K Roofing Contractors today for a free consultation and quote. We’ll assess your needs, recommend the optimal solution, and provide you with the peace of mind that comes with knowing your roof is in expert hands.
Warranty & Compliance
Our commercial waterproofing works include:
Manufacturer warranties on materials
Workmanship warranties on installation
Compliance with relevant building and safety standards
What Our Customers Say
J&K ROOF CONTRACTORS
5 Ang Mo Kio Industrial Park 2A, #04-15 Ang Mo Kio TechLink, Singapore
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I was having leaking issues for my roof for quite a while. I went to several contractors for their quotes and found Kevin’s to be the most reasonable in terms of cost and measures.
His workers were all very efficient and polite. They somehow … More managed to finish up their work within the stated time despite the weather being really unpredictable the last few weeks.
The difference between the roof before Kevin’s works and after are truly amazing. I would recommend Kevin and his team to everyone else. -
After reading many positive reviews about J&K Roof Contractors, I decided to engage them to do repairs to the leaking roofs of my house.
I was not disappointed. Kevin's workers did a great job. Hooray, no more leaks. His workers … More were always punctual, polite and hardworking. The job was completed on schedule.
When I complained of a minor issue shortly after completion, Kevin responded and promptly sent his workers to fix it.
Overall, J&K Roof Contractors lives up to its good track record the as a company you can trust to do a good job.
Sharing some before and after photos below. -
Kevin's team is remarkable with skilled and diligent workers who deliver good quality work. I contacted them after seeing their positive reviews and am glad that they did not disappoint. J&K is a reliable contractor. Have added … More some before and after photos for reference.
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Through a friend's recommendation, we engaged Kevin See from J&K Roof Contractor to repair our roof leakages. True to her words, the job was completed to our utmost satisfaction within the stipulated timeline. Besides being pleasant, … More courteous, helpful & hardworking, Kevin's team is competent, efficient, meticulous & skillful. Well done & keep it up. We would highly recommend anyone who wishes to use their service.
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Kudos to Kevin and his team for a roofing repair job professionally done. It started with a comprehensive inspection followed by thorough cleaning of the whole roof. The repair, waterproofing and re-coating works were carried out by competent … More workers and completed on schedule. By establishing good personal connection, Kevin and his supervisor had established a positive tone for the project.
The following before-and-after pictures show the result which meets a high industry standard. -
J&k is an experience roof repair specialist co. Kevin was very prompt and detailed in his quotation to repair the leaking roof of my terrace house. Each repair process was itemized and explained. The repair took 6 days and his on-site … More supervisor seems in good control of the men and took picture of each process for me to see. Work was done on time and places were kept clean. All the affected ceilings were also patched and painted. Though we have to wait for period of time to see if there are any issue, the completed roof looks new. Kevin assured as that if we have any issue, we can always call him. I would confidently recommend J&K to anyone looking for roof repair…….June 2025 by owner of house
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Kevin was friendly and responsive. When our roof leaked due to heavy rain and stuck pipes, we informed them and they immediately helped to solve the issue and sent someone over and resolved it within a few hours. The supervisor who came … More down was very patient in answering and explaining to us. The workers are friendly, disciplined, experienced, and kept our place very clean and tidy.
Separately when we did waterproofing of our roof, they took 4 days to complete the main job with reasonable pricing and good workmanship. I would strongly recommend J&K to friends and family. -
Had a leakage issue and was glad to have engaged Kevin and Darren who helped me solve my leakage issues. Kevin was professional, friendly and tried his best to expedite the repair works by ensuring the scaffolding team was able to do the … More set up soonest possible. Kevin was also patient and responsive in answering my queries. Darren and team was professional, competent and meticulous in managing the entire project. Would strongly recommend others who have water seepage issues to engage their help.
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Kevin has been very responsive to my enquiries. His guys worked for 4 days to ensure that the roof water proofing was properly done. Greatly appreciate their hard work, so that we can have the peace of mind.
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I recently contracted J&K to repair my roof and I’m pleased with their professionalism, attention to detail, and commitment to quality.
They took one day to repair my roof and paint the walls and ceiling. Despite facing unpredictable … More weather conditions, the workmen completed the project on time without compromising on quality. Their dedication to meeting deadlines is truly commendable.
The workmen were respectful of my home and ensured that the work site was kept clean and tidy throughout. They took great care to protect my parquet and cleaned up thoroughly after the job was done.
The pricing was fair and competitive, with no hidden fees or unexpected charges.
Overall, I am extremely satisfied with the work done by J&K. -
After reading many positive reviews, we reached out to J&K to assist with the roof waterproofing and painting of our house, both exterior and interior. Kevin was very responsive, and we were able to begin the project shortly after. … More Throughout the process, Kevin, Darren, and their team demonstrated a high level of professionalism and a sincere commitment to their work. They went above and beyond the initial scope, and was detailed and proactive in addressing cracks and leaks in our home. As a result, our house now looks rejuvenated and beautiful with a fresh coat of paint, and we are reassured knowing that we are no longer facing leakage concerns. Kevin also assured us that we could always reach out to them if needed. After spending almost two months together, we have developed a genuine appreciation for the team and will miss their presence. We are truly grateful to have found and get to know Kevin and his exceptional team!
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The past rainy season, our roof started to leak. When we contacted J&K Roof Contractors, Mr Kevin responded to our enquiry very quickly. They set up an appointment to come down and inspect our roof, and found that there was a hole in … More our old gutter. The quotation they provided was very reasonable, and we were able to get a slot for repair within 2-3 weeks even though it was during the holiday season.
Their service is quite exceptional. While we were waiting for our repair, there was a day where the leak became a waterfall as a result of an extra heavy downpour. Mr Kevin was very kind to arrange for his team in to do an emergency quick patch on the gutter hole the very next day. This helped us tide through the few rest of the week while we waited for the waterproofing appointment.
For the actual waterproofing, the team was very courteous and professional. They finished the job in a timely manner, and kept us updated on the progress throughout. They also helped patch the ceiling boards inside the house that got damaged by the leak. The roof looks like new now, and the leaks are gone. we are very glad J&K roof contractors helped us with this! -
Had a roof leak that needed to be attended to urgently. I called J&K and Kevin responded immediately, he attended to the roof leakage and completed the job promptly and efficiently. Very impressed with the work done and service and … More would highly recommend them!
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Second time engaging Kevin & his team from J&K to clean and waterproof my roof. Last time they did cleaning and water-proofing was almost 15 years ago; latest engagement due to damage to roof caused by reconstruction works carried … More out by a neighbouring unit. J&K even included water-proofing of my gutter in the works. Results impressed my immediate neighbour, who promptly engaged them to do her roof as well. Thanks, Kevin, Darren & Team!
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I must let the world know how good Kevin and his team is in fixing my leaky roof and making the job seamless. Communication was prompt and despite the rainy season, they were able to capture every dry period to accomplish the task within … More the time promised. I was assured every step of the process. The finished work is fantastic as seen in the photos attached. Their workmanship is solid and with a long warranty I think there is second to none in terms of price, workmanship and professionalism. Thank you Kevin.
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Kevin was very prompt to respond to the enquiry about waterproofing and roofing services, arranged same day to come down for a site visit a few days later FOC. He is easy to talk to and personable.
There were slight delays due to year … More end, CNY and weather but otherwise, work was carried out promptly and professionally. We are pleased with the finished work.
Frequently Asked Questions (FAQ) on Commercial Waterproofing
What is commercial waterproofing?
Commercial waterproofing refers to professional waterproofing solutions designed for large-scale buildings such as offices, factories, warehouses, shopping malls, condominiums, and industrial facilities. It protects structures from water intrusion, leaks, and moisture damage using durable, long-lasting systems.
Why is waterproofing important for commercial buildings?
Waterproofing is critical because water damage can cause:
Structural deterioration
Mold growth and health risks
Damage to electrical systems and interiors
Increased maintenance costs and downtime
Proper commercial waterproofing helps extend building lifespan, maintain safety, and reduce long-term repair expenses.
What areas of a commercial building need waterproofing?
Common areas that require commercial waterproofing include:
Flat and metal roofs
Basements and underground carparks
Balconies and terraces
Toilets and wet areas
Expansion joints and structural joints
External walls and façades
Each area requires a specific waterproofing system based on exposure and usage.
How long does commercial waterproofing last?
Depending on the waterproofing system and site conditions, commercial waterproofing can last 5 to 15 years or more. Regular inspections and proper maintenance can significantly extend its lifespan.
What waterproofing materials are used for commercial projects?
Common commercial waterproofing materials include:
Liquid waterproofing membranes
Polyurethane coatings
Cementitious waterproofing systems
Bituminous or sheet membranes
Sealants for joints and penetrations
The choice depends on the surface type, traffic load, and environmental exposure.
Can waterproofing be done while the building is in use?
Yes. Most commercial waterproofing works can be carried out in phases to minimize disruption to tenants and daily operations. Contractors typically coordinate closely with building management to ensure safety and efficiency.
How do I know if my building needs waterproofing?
Signs that indicate the need for commercial waterproofing include:
Water stains on ceilings or walls
Persistent dampness or mold
Peeling paint or bubbling finishes
Cracks with visible moisture
Musty odors in basements or enclosed spaces
An on-site inspection can accurately determine the source of water ingress.
Is leak repair different from full waterproofing?
Yes. Leak repair addresses existing problem areas, while commercial waterproofing is a comprehensive system designed to prevent future water ingress. In many cases, a full waterproofing solution is more cost-effective long term than repeated repairs.
Do commercial waterproofing services come with a warranty?
Most professional commercial waterproofing services include:
Manufacturer warranties on materials
Workmanship warranties from the contractor
Warranty periods vary based on the system used and project scope.
How much does commercial waterproofing cost?
The cost of commercial waterproofing depends on:
Area size and accessibility
Type of waterproofing system
Severity of existing damage
Surface condition and preparation required
A site inspection is usually required to provide an accurate quotation.
How long does commercial waterproofing work take?
Project duration varies based on size and complexity. Small areas may take a few days, while large commercial buildings may require 1–3 weeks or more, including curing and testing.
Is commercial waterproofing required by building regulations?
In many cases, waterproofing works must comply with local building codes and standards. Using certified materials and trained contractors helps ensure compliance and reduces liability risks.
How often should commercial waterproofing be inspected?
It is recommended to conduct inspections:
Annually
After heavy rainfall or extreme weather
Before warranty expiration
Regular inspections help detect issues early and avoid costly repairs.