Non-Invasive Method
Repairs are completed without major demolition or substrate removal.
Crack & Void Injection Waterproofing
Injection waterproofing systems provide a targeted, non-invasive solution for sealing leaks, cracks, and voids in concrete structures.
This method eliminates the need for external excavation or removal of finished surfaces, making it ideal for remedial and live-environment repairs. By injecting specialised resins or grouts directly into defects under controlled pressure, the system seals the water pathway from within and can stop active ingress, restore structural integrity, or stabilise voided substrates.
Where Injection Waterproofing Is Used
Injection waterproofing is commonly used in basements, lift pits, car parks, retaining walls, tunnels, and other below-ground structures where water ingress can compromise performance and durability.
Systems are selected based on crack type, moisture condition, substrate behavior, and structural requirements to ensure targeted, long-term repairs.
Key Benefits
Targeted repair performance with minimal disruption to occupied environments.
No External Access Required
Ideal where excavation or facade access is not viable.
Active and Passive Leak Repair
Suitable for both flowing water ingress and dormant defects.
Minimal Site Disruption
Efficient delivery in occupied buildings and live operating environments.
Long-Term Targeted Repairs
Seals water pathways directly at source for durable performance.
Broad Substrate Compatibility
Compatible with concrete, masonry, and structural joint systems.
Applications
Common defect locations where crack and void injection systems are deployed.
Cold Joints
Injection sealing for construction joints prone to water tracking.
Cracked Slabs or Walls
Targeted treatment for structural and non-structural cracking.
Pipe Penetrations
Sealing around service entries and interfaces at penetrations.
Lift Pits & Basement Walls
Internal remediation for below-grade assets exposed to hydrostatic pressure.
Injection Types
Resin and grout systems selected to match water activity, crack behavior, and structural intent.
Polyurethane (PU)
Active Leak Control: reacts with water and expands to form a flexible seal, rapidly stopping flowing leaks under pressure.
Acrylic Gel
Flexible Joint Sealing: low-viscosity resin that penetrates fine cracks and remains flexible after curing for movement-prone joints.
Epoxy
Structural Repairs: high-strength resin used to restore cracked concrete continuity and rigid reinforcement once cured.
Cementitious Grouts
Void Filling & Stabilisation: fills larger cavities and honeycombing for support, stabilisation, and waterproofing performance.
Injection Methodology
A controlled process to identify leak paths, inject accurately, and validate long-term performance.
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1
Leak Diagnosis & Port Mapping
Ingress paths are identified and injection packers are mapped for complete coverage.
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2
Custom Resin Selection
System choice is based on crack width, water activity, structural needs, and environment.
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3
Low-Pressure Controlled Injection
Materials are pumped through installed packers to achieve full penetration without added damage.
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4
Monitoring & Performance Testing
Repairs are verified through observation and testing where required.
Quality Assurance
Controls and documentation to ensure consistent remedial outcomes.
Experienced Technicians
Applied by trained personnel experienced in resin injection systems.
Approved Materials
Use of industry-approved products selected for project conditions.
Controlled Procedures
Low-pressure injection protocols followed to protect substrate integrity.
Post-Installation Documentation
Inspection and records provided as part of completion handover.
Warranty-Ready Delivery
Suitable for warranty-backed remedial scopes where specified.