Leak Seal Injection.
Leak seal injection is a specialised repair method used to stop active water leaks in concrete and masonry structures by sealing water pathways from within the structure itself.
Leak seal injection is commonly used where water is actively penetrating concrete, making traditional surface waterproofing ineffective. It is particularly effective in basements, retaining walls, lift pits, car parks, tunnels, and below-ground structures, where access to the external face is limited or impractical.
This method provides a non-invasive, long-lasting solution that restores watertight integrity without excavation or major disruption, making it a reliable approach for both remedial repairs and preventative maintenance in failed or under-designed structures.
Why it’s effective
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Stops leaks at the source, not just on the surface
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Minimal disruption — no excavation or demolition
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Long-lasting, flexible seal that moves with the structure
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Can be done while water is actively leaking
How it works
1
Inject Ports
The process involves installing injection ports along cracks, joints, or defective areas
2
Injection
Inject specialised resins under controlled pressure. These resins react with moisture present in the structure, expanding and curing to fill voids, seal cracks, and block water ingress at its source.
Once cured, the material forms a durable, watertight, and flexible seal that accommodates normal structural movement without reopening the leak.
3
Remove port and Reinstate
Once water seal is achieved the ports are removed and surfaces reinstated to design intent
