Leak Sealing and Crack Injection
Where Leak Sealing is Used
This system is suited to almost any leaking concrete structure, including:
- Leaking retaining walls
- Leaking basements and below-ground car parks
- Leaking concrete walls or floors
- Tunnels and culverts
- Sea walls and waterfront structures
- Dam walls and water storage structures
- Cable trenches, ducts and service corridors
- Any crack or joint where water is entering
Benefits for Homeowners, Engineers and Property Managers
- Stops leaks immediately, even when water is flowing
- No excavation or external access required
- Permanent internal repair that cannot be pushed off by pressure
- Suitable for fine cracks, joints and voids
- Minimal disruption to occupants and operations
- Compatible with potable water structures
- Cost effective compared to external waterproofing or reconstruction
What is Leak Sealing
Leak sealing is a targeted repair method that stops water at its source inside the concrete. A hydrophilic polyurethane resin is injected directly into the leaking crack, fracture or joint. The resin mixes with water during injection, expands to fill voids and forms a tight, impermeable elastomeric seal that stops water flow immediately.
Unlike surface coatings or membranes, leak sealing works from the inside out. Because the resin becomes part of the concrete itself, it cannot be pushed off by water pressure and remains flexible enough to accommodate minor movement. This makes it ideal for negative side waterproofing where the positive side cannot be accessed.
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FAQ
Can leak sealing be done while water is still flowing?
They are different terms for the same process: replacing failed stumps and re-levelling the house above them.
Is leak sealing a permanent waterproofing solution?
Hexplates are engineered steel footings that spread load more effectively, avoid excavation and curing delays, and are eco-friendly compared to concrete.
Can this be used in basements that are already built?
Most projects can be completed in days, depending on the size of the house and access. Hexplates are fast to install and provide immediate structural support.
Does it work on seawalls or structures exposed to salt water?
Yes. They are designed to perform in Perth’s reactive clays, sands, and limestone soils.
Will this fix structural movement as well?
Can leak sealing be done while water is still flowing?
They are different terms for the same process: replacing failed stumps and re-levelling the house above them.
Is leak sealing a permanent waterproofing solution?
Yes. The resin reacts with water, so it can be injected into active leaks.
Can this be used in basements that are already built?
Yes. Once injected, the resin becomes part of the concrete and forms a long lasting internal seal.
Does it work on seawalls or structures exposed to salt water?
Will this fix structural movement as well?
Yes. The product reacts with seawater and mineral water, making it ideal for coastal environments.