Crack Injection
Concrete Crack Injection Auckland
Concrete crack injection is a remedial waterproofing repair method used to seal leaking cracks, joints and voids in concrete walls, slabs, basements, foundations and below-ground structures.
Elephant NZ provides crack injection, leaking concrete crack repair, basement crack repair, foundation crack repair and waterproofing crack repair services across Auckland and selected projects throughout New Zealand.
Request a Quote
Waterproofing Repair for Leaking Concrete Cracks
Cracks in concrete can allow water to enter basements, foundations, retaining walls, lift pits, carparks and concrete slabs. In many cases, crack injection can be a practical repair option because it targets the actual water path.
The correct repair method depends on the type of crack, whether water is actively leaking, the condition of the concrete and whether the crack is structural or non-structural.
Why Do Concrete Cracks Leak?
Concrete cracks can leak when water pressure builds up behind a wall, slab, foundation or below-ground structure. Water can then track through cracks, construction joints, cold joints, penetrations or small voids in the concrete.
Basement crack repair and foundation crack repair usually starts by identifying where the water is entering and whether the crack is suitable for injection repair.
- Water pressure behind concrete walls
- Cracks in basements, foundations and slabs
- Failed waterproofing around below-ground structures
- Movement, shrinkage or weak construction joints
- Voids, penetrations and leaking concrete defects
What is Crack Injection?
Crack injection is the process of injecting resin, grout or specialist repair material into a crack or void to help seal the water path. It is commonly used for concrete wall crack repair, concrete slab crack repair, basement crack repair and waterproofing crack repair.
Depending on the situation, Elephant NZ may recommend polyurethane crack injection, epoxy crack injection or another remedial waterproofing repair method.
- Used to seal leaking concrete cracks
- Can reduce or stop water ingress where suitable
- Targets a specific crack, joint or void
- Can be used in basements, foundations and slabs
- Often avoids major excavation where the issue is localised
Polyurethane vs Epoxy Crack Injection
Polyurethane crack injection and epoxy crack injection are used for different types of concrete crack repair. The right option depends on whether the crack is leaking, dry, moving, structural or non-structural.
Polyurethane Crack Injection
Polyurethane injection is commonly used for leaking cracks and active water ingress. It can expand and help seal water paths in concrete.
- Suitable for active water leaks
- Often used for waterproofing crack repair
- Useful for basements and below-ground walls
- Can suit cracks with minor movement
Epoxy Crack Injection
Epoxy injection is often used for dry structural crack repair where bonding and strength are required. It is not always the right option for active water leaks.
- Often used for structural crack repair
- Best suited to dry cracks
- Can bond concrete sections together
- Selected based on engineering requirements
Common Areas We Repair
Crack injection can be used across many concrete waterproofing repair situations. It is often used where the leak is localised and where the surrounding concrete is suitable for injection repair.
Elephant NZ provides concrete crack injection for leaking basements, concrete walls, concrete slabs, foundations, retaining walls, lift pits, water tanks and below-ground structures.
- Basement crack repair
- Foundation crack repair
- Concrete wall crack repair
- Concrete slab crack repair
- Lift pit crack injection
- Retaining wall leak repair
- Water tank and below-ground concrete repair
- Carpark and podium concrete crack repair
How Elephant NZ Repairs Leaking Concrete Cracks
Our crack injection process is focused on finding the water path, choosing the correct repair material and sealing the crack as neatly and effectively as possible.
Inspect
We inspect the crack, leak location, concrete condition and surrounding waterproofing details.
Prepare
The repair area is cleaned and prepared so the injection system can be installed correctly.
Install
Ports, packers or injection points are installed depending on the crack and repair method.
Inject
Polyurethane, epoxy or selected material is injected to seal the crack, joint or void.
Check
The repair is checked, cleaned and reviewed before handover where practical.
Crack Injection vs Full Waterproofing
Crack injection repairs a specific water path. It can be a cost-effective waterproofing repair where water is entering through one crack, joint or localised defect.
However, full waterproofing may be required where the existing membrane has failed, where there are multiple leaks, or where water pressure is affecting a wider area. Elephant NZ can advise whether crack injection, internal waterproofing or a full membrane system is the better option.
- Crack injection suits localised leaks
- Full waterproofing may be needed for wider membrane failure
- Internal basement waterproofing may suit existing buildings
- External waterproofing may suit new or accessible structures
- The right repair depends on the cause of the leak
Explore Related Waterproofing Services
Frequently Asked Questions
What is concrete crack injection?
Concrete crack injection is a repair method used to inject resin, grout or specialist material into a crack, joint or void to help seal water ingress or repair the concrete.
Can crack injection stop water leaks?
Yes, crack injection can stop or reduce water leaks where the water path is localised and the concrete is suitable for injection repair. The result depends on the cause of the leak and the condition of the structure.
What is polyurethane crack injection used for?
Polyurethane crack injection is commonly used for active water leaks and waterproofing crack repair because it can expand and help seal water paths in concrete.
What is epoxy crack injection used for?
Epoxy crack injection is often used for dry structural crack repair where bonding and strength are required. It is not always suitable for active water leaks.
Do you repair basement and foundation cracks?
Yes, Elephant NZ provides basement crack repair, foundation crack repair, concrete wall crack repair and concrete slab crack repair across Auckland and selected projects throughout New Zealand.
Is crack injection better than full waterproofing?
Crack injection can be better for localised leaks. Full waterproofing may be required when the membrane has failed, when there are multiple leaks or when water pressure affects a wider area.
Need Concrete Crack Injection?
Talk to Elephant NZ about crack injection, leaking concrete crack repair, basement crack repair, foundation crack repair or waterproofing crack repair in Auckland.
Request a Quote