Singapore's heavy rainfall and year-round humidity put constant pressure on roofs, walls, balconies, bathrooms and basements and once water seepage sets in, it rarely stays a small problem for long. ALDI Construction provides professional waterproofing services Singapore property owners can rely on, from identifying the source of a leak to applying the right long-term protection. Whether it's a roof that's letting water through, a damp external wall, or a basement prone to seepage, our team assesses each property's condition and delivers a solution built to last, not just a quick fix.
Professional waterproofing solutions are important because they stop water from entering a building before it causes structural damage, mould, or costly repairs. Singapore's frequent rainfall and high humidity put constant pressure on roofs, walls, and joints, making properties especially prone to seepage if left untreated. Water can enter through even small cracks and gradually weaken the structure over time. A professional waterproofing contractor Singapore identifies exactly where water is entering and applies a treatment suited to that specific problem, rather than a generic fix.
A professional waterproofing contractor identifies water leakage by tracing the actual source of water intrusion, not just the visible damage. Water stains on ceilings, damp patches on walls, or peeling paint often appear far from where the water is actually entering. A proper assessment checks roof conditions, external walls, concrete cracks, joints, and moisture pathways to pinpoint the real cause. As an experienced waterproofing contractor Singapore, ALDI carries out detailed site evaluations before recommending any water leakage repair or waterproofing treatment, so the solution addresses the source rather than just the symptom.
Every part of a building faces water differently, which is why we treat each area with a method suited to its exposure and structure.
Roofs are constantly exposed to sun, rain, and temperature swings, making them one of the most vulnerable parts of any building. We treat cracks, damaged membranes, and aging surfaces to reduce seepage and ponding water risks.
Learn More →Daily water exposure makes bathrooms and toilets highly prone to hidden seepage beneath tiles and into adjacent rooms. Our wet-area waterproofing creates a reliable moisture barrier to prevent this.
Learn More →Building facades face constant weather exposure, leading to cracks and porous surfaces that let water in. We protect the building envelope while improving weather resistance and appearance.
Learn More →Below-ground structures face water seepage and groundwater pressure through joints and concrete surfaces. We apply solutions tailored to basements and other below-grade areas.
Learn More →Balconies are exposed to constant weather and often suffer from water ponding when drainage is inadequate. We waterproof slabs and joints to prevent seepage into adjacent structures.
Learn More →Different leakage problems require different treatment methods. ALDI Construction assesses the affected surface, identifies the source of water intrusion, and selects a suitable waterproofing method based on the building condition. Our solutions include PU injection grouting, non-hacking waterproofing, protective waterproof coatings, and targeted water leakage repair. This approach helps address both visible leaks and hidden moisture pathways while reducing unnecessary hacking, property disruption, and recurring maintenance problems.
PU Injection Grouting is suitable for treating water entering through concrete cracks, joints, and structural gaps. The polyurethane material expands inside the affected area to seal water pathways and reduce active leakage. It's particularly useful for basements, retaining walls, and concrete structures where surface treatment alone won't address the internal source of water.
Non-Hacking Waterproofing provides a practical option when property owners want to minimise demolition and avoid unnecessary removal of existing finishes. Depending on site conditions, suitable waterproofing materials can be applied to vulnerable surfaces to improve moisture resistance while reducing disruption to occupants and ongoing operations.
Waterproof Coatings create a protective barrier against rainwater, humidity, and surface moisture. They're applied to suitable roofs, walls, and concrete surfaces after proper surface preparation, with the coating system selected according to the substrate and exposure conditions.
Water Leakage Repair Singapore focuses on finding the source of recurring leaks instead of simply covering visible stains. ALDI assesses cracks, joints, wall surfaces, and ceilings before recommending corrective treatment, reducing repeated leakage and protecting the surrounding structure.
Water damage can affect homes, condominiums, commercial buildings, offices, and industrial properties in different ways. ALDI Construction works with property owners and management teams that need reliable leak prevention, moisture protection, and long-term building maintenance solutions. Our experience with complex building projects allows us to support both individual property requirements and larger commercial projects while maintaining proper safety procedures and professional workmanship.
We help MCSTs, condominium management teams, and property managers address roof leaks, external wall seepage, balcony leakage, and other common building maintenance issues. Our team assesses affected areas and recommends suitable waterproofing or repair methods based on the property's condition.
For facility management companies, recurring water leakage can create ongoing maintenance problems and tenant complaints. ALDI provides practical building maintenance solutions, leakage assessment, waterproofing treatments, and repair support designed to reduce recurring moisture-related issues.
Commercial properties require waterproofing solutions that minimise disruption to daily operations. We support commercial property owners, offices, retail spaces, and other business premises with targeted water leakage repair, roof protection, and external wall waterproofing solutions.
ALDI can also support main contractors and construction teams requiring specialist waterproofing, rope access, external painting, or related building works. Our project documentation capabilities, safety procedures, and trained personnel allow us to work within structured commercial project requirements.
ALDI Construction provides practical waterproofing solutions supported by trained personnel, professional assessment procedures, and industry-compliant safety practices. Our team understands the challenges faced by residential owners, MCSTs, facility management companies, and commercial property managers. Beyond delivering waterproofing solutions in Singapore, we also provide rope access capabilities, external painting services, and project documentation support for complex building projects. This allows us to manage waterproofing requirements efficiently while maintaining high standards of workmanship, safety, and long-term property protection.
Our waterproofing solutions start from S$500, with the final cost depending on the affected area, surface condition, access requirements, materials, and treatment method. A site assessment may be required to determine the most suitable solution and provide an accurate quotation.
| Service | Starting Price | Final Price Depends On |
|---|---|---|
| Bathroom & Toilet Waterproofing | From S$500 | Area size, tile condition, hacking or non-hacking |
| Roof Waterproofing | From S$500 | Roof size, surface condition, waterproofing system |
| Balcony Waterproofing | From S$500 | Balcony size, drainage and surface condition |
| External Wall Waterproofing | From S$500 | Wall area, surface condition, access method |
| Basement Waterproofing | From S$500 | Area, groundwater pressure, structural condition |
| PU Injection Grouting | From S$500 | Crack severity, injection points, water pressure |
| Water Leakage Repair | From S$500 | Leak source, affected area, extent of damage |
Singapore's climate makes waterproofing essential — heavy rainfall and high humidity put constant pressure on roofs, walls, balconies, bathrooms, and basements, and untreated seepage quickly turns into costly structural damage.
Finding the source matters more than treating the symptom — visible signs like ceiling stains or damp walls often appear far from where water is actually entering, so a proper assessment traces the real cause before any repair begins.
Different areas need different solutions — roofs, bathrooms, external walls, basements, and balconies each face water differently and require treatment suited to that specific surface and exposure.
No single method fixes every leak — ALDI uses a combination of PU injection grouting, non-hacking waterproofing, protective coatings, and targeted leak repair, chosen based on the actual source and severity of the problem.
Non-hacking options reduce disruption — many leaks, especially in bathrooms and wet areas, can be treated without breaking existing tiles or finishes, saving time and cost.
Built for both residential and commercial needs — ALDI works with homeowners, MCSTs, facility management companies, commercial property owners, and main contractors, adapting to each property type's requirements.
Backed by proper documentation and safety practices — including risk assessments, method statements, and rope-access certified personnel for external and rooftop work.
Waterproofing costs vary depending on the affected area, the method used, and the extent of damage. A small bathroom waterproofing job typically costs less than a full roof or external wall treatment. The best way to get an accurate figure is a free on-site inspection, since pricing depends on the actual condition of the surface, not just its size.
Most professionally applied waterproofing systems last between 5 to 10 years, depending on the method used, material quality, and how exposed the area is to weather or water contact. Wet areas like bathrooms and roofs, which face daily or constant exposure, may need attention sooner than internal walls.
Common warning signs include water stains on ceilings, peeling paint, damp patches on walls, musty odours, mould growth, and recurring leaks during heavy rain. These signs often appear away from the actual source of the leak, which is why a proper inspection is important before starting repairs.
Hacking waterproofing involves breaking open existing tiles or flooring to access and replace the damaged waterproofing layer underneath; it's more thorough but also more disruptive and time-consuming. Non-hacking waterproofing treats the leak from the surface or through injection methods without removing existing finishes, making it faster and less invasive, though not suitable for every case.
Yes. Since water intrusion is the primary cause of mould and mildew growth in damp areas, effective waterproofing removes the moisture source that allows mould to develop, helping maintain a healthier indoor environment.
The most common areas are roofs, bathrooms and toilets, balconies, external walls, and basements all of which face regular exposure to water or moisture and are prone to seepage if not properly protected.
DIY waterproofing may seem cost-saving, but it's often ineffective for identifying the true source of a leak and can lead to more damage if the underlying problem isn't addressed. A professional waterproofing contractor Singapore conducts a systematic assessment before recommending the right repair method, which reduces the risk of recurring leaks.
Look for BCA registration and relevant certifications, a proven track record with similar projects, clear and detailed quotations, and a warranty on workmanship. It's also worth asking about the materials and methods they plan to use and why those are suitable for your specific issue.
Most professional waterproofing contractors offer a workmanship warranty, though the length and coverage vary by company and project scope. It's important to clarify what the warranty covers, how long it lasts, and what happens if the leak recurs within that period.
A waterproofing specialist traces water pathways rather than only treating visible damage, since a leak can travel along structural elements before becoming visible elsewhere. This typically involves inspecting the roof, walls, joints, and concrete surfaces, and may include tests such as ponding tests, before recommending a suitable treatment method.
This content has been reviewed by our in-house waterproofing and rope access specialists, drawing on hands-on project experience across residential, commercial, and industrial properties in Singapore. Our team holds relevant certifications for rope access work, including Climber Certification and Fall Prevention training, and follows structured safety and documentation procedures including Risk Assessments, Method Statements, and Work Sequence Plans for every project we undertake.
Not sure if your leak needs hacking or a non-hacking fix? Let our team assess it first, a proper diagnosis now can save you from repeat repairs later.
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