Leakage problems can be stressful, costly, and confusing. As a waterproofing specialist since 1999, Winborne has helped thousands of homeowners and interior designers in Singapore resolve leakage issues in bathrooms, balconies, kitchens, roofs, and more.
Over the years, we've noticed that many homeowners are not well informed about how leakage repair and waterproofing work. To help you make a better decision before engaging a waterproofing contractor, here are 7 brutally honest truths that most companies won't tell you.
1. No Contractor Can Identify Every Leak with 100% Certainty
Water can travel through concrete, walls, and hidden cracks before appearing somewhere completely different. An experienced contractor can make an informed diagnosis with a high degree of confidence, but anyone promising 100% certainty should be treated with caution.
This may frustrate homeowners, but the reality is that we can only identify the most likely source of the leakage. We cannot guarantee it upfront. Sometimes, diagnosing a leak becomes a process of elimination.
For example, a ceiling leak may initially be suspected to originate from the upstairs bathroom. However, if the leakage persists after waterproofing the bathroom, it may later be discovered that an external ledge beside the bathroom is also allowing water to seep into the lower-floor ceiling. Without first repairing the bathroom and observing the results, no one would have been able to determine with complete certainty what was causing the leakage from the start.
2. Leakage May Not Stop Immediately After Repair
Even after successful waterproofing, trapped moisture inside the structure may continue to seep out for days or weeks. This does not necessarily mean the repair has failed.
If homeowners opt for non-hacking waterproofing methods such as Flood Infusion Treatment or Chemical Infusion Treatment to repair leakage in toilets, balconies, or kitchen floors, the chemicals typically require 2–3 weeks to react fully within the concrete slab. We usually advise homeowners to monitor the affected area for 2–3 weeks after these treatments. In most cases, the leakage will stop after this period.
3. Nobody Can Guarantee Exactly How Long Waterproofing Will Last
The lifespan of a waterproofing repair depends on many factors, including existing site conditions, daily usage, weather exposure, and maintenance practices.
For example, if a floor is regularly washed with harsh detergents, the waterproofing membrane may deteriorate more quickly. Be wary of contractors who promise a "permanent" solution.
In our experience, the longest-lasting waterproofing repair has remained effective for about 15 years before leakage reoccurred. For external waterproofing applications such as walls, terrace floors, and external ledges, we recommend reapplying the waterproofing layer every 5–7 years as preventive maintenance, even if there are no visible signs of leakage.
4. The Biggest Nightmare Is Unresolved Leakage
Sometimes leakage is not resolved after the first repair attempt. This can be due to inaccurate diagnosis, poor workmanship, or complex site conditions.
For any waterproofing company, unresolved leakage is the biggest nightmare. Return visits, repeated inspections, and rework can quickly consume significant time and resources. In fact, some waterproofing contractors in Singapore have been forced to close their businesses because the overwhelming cost of rework eliminated their profitability.
We have also served many customers who spent thousands of dollars on leakage repairs with other contractors, only to find that the leakage remained unresolved and the contractor stopped responding.
What does this mean for homeowners?
Choosing a contractor with a strong track record, extensive experience, and reliable workmanship is often more important than selecting the cheapest quotation.
If you're interested, feel free to contact Winborne to learn more about our 100% Money-Back Guarantee: No More Leakage or Full Refund.
5. Warranty Length Depends on Many Factors
No waterproofing company can offer the same warranty for every type of leakage problem.
While warranty length can be an indication of a contractor's confidence in their solution, it should not be the only factor considered. Warranty coverage often depends on site conditions, the type of leakage involved, and the scope of repair selected by the homeowner (for example, a comprehensive waterproofing solution versus a partial repair).
Typically, the standard warranty offered in the market for non-hacking waterproofing is around 12 months. Some projects may only qualify for a shorter warranty period, while others may be eligible for extended warranty coverage at an additional cost.
6. Fancy Detection Equipment Is Not the Most Important Thing
Thermal cameras and moisture meters can be useful diagnostic tools, but they do not magically locate every leak, nor do they provide the complete picture.
For example, these tools may confirm the presence of moisture in a ceiling. However, the more important task is determining where that moisture is coming from, a diagnosis that requires experience and expertise rather than equipment alone.
Ultimately, after the leak has been detected, the contractor's ability to accurately diagnose the root cause and carry out effective repairs remains the most important factor in resolving the problem.
7. Chemical Infusion Waterproofing Is Perfectly Safe When Done Properly
Many homeowners worry about using "chemicals" to repair leaks. Common concerns include odours during or after treatment and whether the materials are harmful to occupants.
The truth is that chemical infusion waterproofing is perfectly safe when carried out correctly using suitable materials.
Before engaging a waterproofing company, ask about the products they use and request information on safety certifications and testing. It is important to ensure that the materials have been independently tested and verified to be safe for occupied homes.
At Winborne, we only use non-toxic, eco-friendly products that meet Singapore Green Label standards and have been tested by independent laboratories.
Read More: Is Chemical Infusion Waterproofing Safe?
Final Thoughts
Before hiring a waterproofing contractor, don't focus solely on price. Instead, look for a company with proven experience, honest advice, and a strong track record of successfully resolving leakage problems.
The right contractor can save you time, money, and unnecessary stress while helping you enjoy a leak-free home with minimal hassle.
If you are dealing with a leak and unsure where to start, schedule a free professional assessment with Winborne and we will help you identify the most likely cause and the most suitable repair approach.