Singapore
Waterproofing Singapore — Roof, Toilet & PU Injection Specialists
NP Engineering is a trusted waterproofing contractor Singapore homeowners and property managers rely on. We deliver lasting solutions for roof waterproofing, torch-on membrane, toilet and balcony leakage, PU injection, external walls and ceiling leaks — for HDB flats, condos, landed homes and commercial buildings.
What we cover
Our waterproofing Singapore services cover everything you'd expect from a full-service contractor — carried out by trained technicians with proper tools and clean site practice.
- Roof waterproofing
- Rooftop torch-on membrane
- Toilet waterproofing & leakage repair
- Bathroom leakage repair
- Balcony waterproofing
- External wall waterproofing
- Ceiling water leakage repair
- PU injection waterproofing
- Crack repair & sealing
- HDB, condo, landed & commercial properties
Service areas in Singapore
We provide waterproofing Singapore services island-wide, including Jurong, Woodlands, Tampines and Yishun. Same-day visits available for most neighbourhoods.
Frequently asked questions about waterproofing Singapore
How long does waterproofing last in Singapore?
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Quality waterproofing in Singapore typically lasts 5–10 years for toilets and balconies, and up to 10–15 years for torch-on roof membrane, depending on usage and exposure.
Can you waterproof without hacking existing tiles?
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Yes — for many toilets and balconies we use PU injection and surface waterproofing methods that don't require full tile hacking, saving time and cost.
Do you handle HDB, condo and landed waterproofing?
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Yes. We do waterproofing for HDB flats, condos, landed homes and commercial buildings across Singapore — roofs, toilets, balconies, external walls and basements.
How much does roof waterproofing cost in Singapore?
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Roof waterproofing costs depend on size, condition and system (torch-on membrane, cementitious or PU). We provide a fixed quotation after a site inspection.
Do you provide a warranty on waterproofing works?
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Yes. We offer a workmanship warranty on completed waterproofing, with terms depending on the system applied.
Get a quote for waterproofing Singapore
Tell us what you need and we'll reply within the same working day with a transparent, no-obligation quote.