CONCRETE CRACK INJECTION

Rock Build offers customized concrete crack injection solutions that are both cost-effective and versatile, suitable for addressing a range of structural cracks or for waterproofing purposes. Whether you require repair or waterproofing, Rock Build can provide a tailored solution to meet your concrete crack needs.

Epoxy Resin Injection

Epoxy injection is a highly effective method for repairing cracks in a variety of concrete structures, including foundations, basements, beams, columns, slabs, and walls. This technique involves injecting specialized high-strength epoxy or urethane resins under pressure into cracks with an opening of at least 0.05mm, creating a strong bond that not only repairs the crack but also prevents water intrusion and subsequent spalling.


However, it is important to note that this method is not suitable for active cracks, numerous cracks, or situations where water leakage cannot be controlled. Additionally, if the root cause of the cracking has not been addressed, the crack may reappear near the original location. Caution must be exercised when injecting cracks that are not visible on all surfaces.


Rock Build Services offers a wide range of epoxy and urethane resins, which are injected into cracks under pressure using specialized pneumatic machines to ensure that the crack is thoroughly filled with epoxy. This results in a structurally sound and waterproof repair that effectively addresses the problem.

Polyurethane Injection

for Repairing Concrete Cracks

Rock Build utilizes polyurethane resin to repair concrete cracks, rock fissures, expansion joints, and other voids in underground structures. In this process, the fluid resin is injected into the crack, and within minutes, it undergoes a chemical transformation from liquid to solid. The popularity of polyurethane resins in crack injection applications is due to their versatility and unique properties.


Polyurethane resins have a short cure time, making them an ideal solution for urgent water-stopping needs. Additionally, these resins cure normally, whether the crack is wet, actively leaking, or dry. With thousands of polyurethane resin formulations available, Rock Build can tailor their solution to the specific needs of each foundation crack repair project, controlling the viscosity of the resin and cure time.


Once cured, polyurethane can be quite flexible, depending on the specific formulation used. Overall, polyurethane resin is an effective and popular choice for crack injection repair projects, and Rock Build is a trusted service provider in this field.

Some frequently asked questions on Remedial Maintenance

  • What is concrete crack injection?

    Concrete crack injection is a process that involves injecting a substance into cracks in concrete to fill and repair them. This process can help to prevent further damage to the concrete and extend its lifespan.

  • What types of cracks can be repaired using concrete crack injection?

    Concrete crack injection can be used to repair a wide range of cracks in concrete, including hairline cracks, shrinkage cracks, and larger structural cracks.

  • What materials are used for concrete crack injection?

    The materials used for concrete crack injection can vary depending on the type of crack and the severity of the damage. Some common materials used include epoxy resins, polyurethane foam, and acrylic resins.

  • How do I know if my concrete needs crack injection?

    If you notice cracks in your concrete, particularly if they are getting larger or causing unevenness in the surface, it may be time to consider concrete crack injection. A professional can evaluate the damage and recommend the best course of action.

  • How long will the repairs last?

    The lifespan of the repairs will depend on several factors, including the severity of the damage and the materials used for the injection. In general, properly injected cracks can extend the lifespan of the concrete by several years or more.

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