NPR Self-Healing Technology
NPR technology for rooftop and basement waterproofing that never cracks, never hardens, backed by a 10-year full warranty. Installed on Changi Airport T3, Hilton Singapore Orchard, and 20+ landmark buildings across Singapore.
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The Problem
Traditional waterproofing cures and hardens. That's exactly why it fails.
Every conventional system (PU, acrylic, cement-based) cures and becomes rigid. It can no longer flex with your building.
Rigid membranes can't absorb movement. Cracks form. Water finds a way in. The patch-repair cycle begins.
Re-coating every 5-6 years. Emergency patches in between. Over 10 years, you pay 2-3x what a permanent solution costs.
There's a better way.
The Solution
NPR never cures. It stays permanently flexible, absorbs building movement, and self-heals around new cracks.
Think of honey. Water cannot penetrate honey because it's 12,000 times thicker than water. NPR is 300 times thicker than honey. And unlike honey, it never dries.
We apply NPR Gel (GTR 3000) directly onto your existing roof deck, creating a self-healing barrier that flexes with building movement. On top, a Heat Shield Sheet provides UV protection and reduces roof temperature by 8-9°C.
We drill into the concrete, extract trapped water, and inject NPR gel between the soil and the concrete wall. The leak is sealed permanently at its source, not patched on the surface.
The Value
Not 3-5 years. Not materials-only. Full coverage with annual inspections and a 48-hour response guarantee. Ask any other waterproofing company in Singapore to match this.
Buildings move. Concrete expands and shifts. When micro-cracks form, NPR flows back and reseals itself. Lab-tested for over 14 years without drying or failure.
Traditional systems need re-coating every 5-6 years. With NPR, there is no re-coating. The system you install today is the same system protecting you a decade from now.
Who We Help
Solar providers require a warrantied waterproof surface before they'll install panels. If your roof is older than 15 years, most solar companies will ask you to re-waterproof first. With JSJ's NPR system and 10-year warranty, your roof is solar-ready from day one. No delays, no rework, no risk to your solar investment.
If your building has had two or more leaks in the past 12 months, patching is no longer a solution. It's a recurring cost. Every repair buys you another 6 to 12 months before the next one appears somewhere else. NPR breaks that cycle permanently. One installation. One warranty. Budget certainty for the next 10 years.
Water seeping through basement walls and floors is more than a nuisance. It compromises structural integrity, corrodes rebar, and creates persistent damp conditions. Traditional surface coatings only treat the symptoms. NPR injection targets the source by creating a permanent barrier between the soil and your concrete structure. One treatment. No recurring leaks.
Our Track Record
Rooftop waterproofing across metal and reinforced concrete roof sections for one of the world's busiest airport terminals. All work carried out while the terminal remained fully operational. NPR's torch-free installation eliminated fire risk across the terminal roof.
Basement waterproofing for a 5-star hotel on Orchard Road. NPR injection resolved persistent underground leakage without disruption to hotel operations or guest experience. The hotel's facilities team no longer needs to manage recurring basement damp and water ingress issues.
Rooftop waterproofing with solar-ready certification for a premium retail property in Singapore's main shopping district. Solar providers can install directly onto the warrantied surface without additional waterproofing work.
Plus Parliament House, National Gallery, Esplanade, SMRT stations, and 20+ completed projects.
Next Step
Worth S$800. Takes 30 minutes. No obligation. Our team will assess your roof condition and provide a detailed report.