Epoxy Concrete Repair


Get Professional Service for High-Quality Epoxy Concrete Repair

We at Direct Inject provide our expertise and help with the repairs of concrete structures. Our tradesmen are highly skilled and licensed to provide you with top-notch services and can work on elevated platforms 11m below and above. We can handle all kinds of regular and complex projects with the help of our talented craftsmen. You can be assured that your projects will be completed on time and within the allocated budget using materials of the highest standard.

One of the services that we provide are about using epoxy for concrete crack repair, which has been explained in detail-

What is Epoxy Concrete Crack Repair?

  • An Epoxy Concrete Crack Repair consists of using a strong, pourable epoxy resin liquid to fill the concrete crack and quickly cure stronger than the concrete around it.
  • The mixture is composed of low viscosity (activator) and a high strength resin.
  • As it comprises 100% epoxy resin, it is solvent-free compared to numerous less expensive alternatives.
  • They are generally used to cover cracks that have an opening of 0.005mm or larger.


  • This technique should not be considered if the crack is still active or when the water spillage can not be stopped.
  • If the reason behind the cracking cannot be corrected, new cracks will then reoccur near the original crack.
  • One should also take extreme precautions before injecting cracks that are not apparent on all surfaces.

The process of concrete crack repair

  1. Ensure the surface of the cracked concrete is kept clean and contamination-free
  2. Mix the activator and resin of the epoxy crack repair and pour them immediately
  3. See to it that the crack is filled to the brim and it out
  4. Let the Epoxy crack repair settles down

Tips for concrete crack repair using epoxy

Ensure that the Surface is well Prepared
For better durability and to ensure that the epoxy crack repair filler provides the best results, surface preparation plays an important role. Ensure no dust, dirt or residue is left behind before applying the filler. Using a pressure sprayer in short blasts would help clean the surface and remove any contaminants if any. Keeping the power pressure up to 5000 PSI would be a good start.

Work Safely
When working with concrete, epoxy, and abrasive cleaning techniques, you should ensure that you take proper precautions. There might be risky chemicals involved when utilising epoxy concrete filler, so you should wear the appropriate protective gear that incorporates gloves, goggles, and a face cover. Try to cover your arms and legs, and it’s ideal for working in a space with good air ventilation.

Cleaning Up
Once the job is completed, clean up any excess epoxy that might be left on your tools and workspace. Using MEK or acetone can be quite effective. One can also choose a liquid detergent or a concentrated soap for cleaning purposes.

Epoxy Concrete Crack Repair

Hammering Concrete
Before filing the gaps with epoxy, ensure that you have chosen the correct technique. Check out the concrete that needs repairs by using a sounding hammer before proceeding with the job.

Using Heat
The time taken by epoxy to cure can be affected by changes in the temperature. If you feel that the epoxy is curing slowly, apply gentle heat on the epoxy surface, which can be performed using a heat gun or a warming blanket.

Thinning the Epoxy
Having a thick filler would not bode well with the curing of the epoxy. Hence, it’s important to preheat the materials before mixing to thin out the epoxy, leading to faster curing time.

Shrinking and Moving Polymers
When two epoxy materials are mixed, this may lead to the polymers shrinking or expand when they cure. This is to be kept in mind, especially when dealing with larger cracks. It’s essential to understand the specifics of the product to understand the reaction of the polymer on a cure.

Understand the Width of the Crack
Before injecting the epoxy into the cracks, ensure you know the width and depth of the crack that needs to be filled. Measure the depth using a plastic crack card or a crack scope.

Keeping the Epoxy
If you have leftover epoxy left after the epoxy filling process, the unmixed portion can be stored safely in an airtight container. But due to the presence of polyurethane, ensure to use it as soon as you can.

Getting the Right Appearance
Once you have fixed the cracked concrete surface, you need to maintain its aesthetics. One can employ a sacking method that utilises hitting the wet surface of the concrete with a sack containing the same color of the concrete or use a paintbrush to paint over the concrete epoxy.

Applications of Epoxy injection for Concrete Crack Repair-

  • In Foundations
  • Basements
  • Beams
  • Columns
  • Slabs
  • Walls and other concrete structures.

Make sure you contact us on 02 9622 2336 or email us at kevin@directinject.com.au to get a free quote along with any queries or doubts you have related to epoxy concrete repairs resolved. We are committed to providing our clients with reliable, efficient, and budget-friendly services by qualified and licensed professionals of the highest quality.



Happy Clients.

Completed Projects.

Skilled Tradesmen.

© Copyright 2024 | Direct Inject Pty Ltd